Document And Entity Information - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Mar. 05, 2019 |
Jun. 29, 2018 |
|
| Document Information [Line Items] | |||
| Entity Registrant Name | COHU INC | ||
| Entity Central Index Key | 0000021535 | ||
| Trading Symbol | cohu | ||
| Current Fiscal Year End Date | --12-29 | ||
| Entity Filer Category | Accelerated Filer | ||
| Entity Current Reporting Status | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Emerging Growth Company | false | ||
| Entity Small Business | false | ||
| Entity Common Stock, Shares Outstanding (in shares) | 40,812,404 | ||
| Entity Public Float | $ 463 | ||
| Entity Shell Company | false | ||
| Document Type | 10-K | ||
| Document Period End Date | Dec. 29, 2018 | ||
| Document Fiscal Year Focus | 2018 | ||
| Document Fiscal Period Focus | FY | ||
| Amendment Flag | false |
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- Definition If the value is true, then the document is an amendment to previously-filed/accepted document. No definition available.
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- Definition End date of current fiscal year in the format --MM-DD. No definition available.
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- Definition This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY. No definition available.
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- Definition This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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- Definition The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'. No definition available.
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- Definition A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. No definition available.
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- Definition Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition Indicate if registrant meets the emerging growth company criteria. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated), (5) Smaller Reporting Accelerated Filer or (6) Smaller Reporting Company and Large Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition State aggregate market value of voting and non-voting common equity held by non-affiliates computed by reference to price at which the common equity was last sold, or average bid and asked price of such common equity, as of the last business day of registrant's most recently completed second fiscal quarter. The public float should be reported on the cover page of the registrants form 10K. No definition available.
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- Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicate if company meets the shell company criteria: a company with no or nominal operations, and with no or nominal assets or assets consisting solely of cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicates that the company is a smaller reporting company with both a public float and revenues of less than $75 million. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. No definition available.
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- Definition Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A. No definition available.
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- Definition Trading symbol of an instrument as listed on an exchange. No definition available.
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- Definition The carrying value of deferred revenue, net of expenses, as of the balance sheet date that is expected to be recognized as such within one year or the normal operating cycle, if longer. No definition available.
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- Definition Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer. No definition available.
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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due beyond one year or the operating cycle, whichever is longer. Alternate captions include income taxes payable, noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. No definition available.
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date. No definition available.
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying value as of the balance sheet date of current portion of long-term loans payable to bank due within one year or the operating cycle if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the operating cycle if longer, excluding current portion. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of current assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of noncurrent assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition For a classified balance sheet, the carrying amount as of the balance sheet date of the portion of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement that is payable after one year (or beyond the operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of borrowings from a bank classified as other, maturing within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Consolidated Balance Sheets (Parentheticals) - $ / shares shares in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| Preferred stock, par value (in dollars per share) | $ 1 | $ 1 |
| Preferred stock, shares authorized (in shares) | 1,000 | 1,000 |
| Preferred stock, shares issued (in shares) | 0 | 0 |
| Common stock, par value (in dollars per share) | $ 1 | $ 1 |
| Common stock, shares authorized (in shares) | 60,000 | 60,000 |
| Common stock, shares issued (in shares) | 40,763 | 28,489 |
| Common stock, shares outstanding (in shares) | 40,763 | 28,489 |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
||||||||||||||
| Net sales | $ 451,768 | [1],[2] | $ 352,704 | $ 282,084 | ||||||||||||
| Cost and expenses: | ||||||||||||||||
| Cost of sales (1) | [4] | 292,460 | [1],[2],[3] | 209,297 | [3] | 182,086 | ||||||||||
| Research and development | 56,434 | 40,737 | 34,841 | |||||||||||||
| Selling, general and administrative | 96,754 | 60,737 | 55,212 | |||||||||||||
| Amortization of purchased intangibles | 17,197 | 4,208 | 6,903 | |||||||||||||
| Restructuring charges, total | 18,704 | |||||||||||||||
| 481,549 | 314,979 | 279,041 | ||||||||||||||
| Income (loss) from operations | (29,781) | 37,725 | 3,043 | |||||||||||||
| Other (expense) income: | ||||||||||||||||
| Interest expense | (4,977) | (54) | ||||||||||||||
| Interest income | 1,187 | 671 | 342 | |||||||||||||
| Foreign transaction gain (loss) and other | 1,659 | (2,977) | 2,622 | |||||||||||||
| Income (loss) from continuing operations before taxes | (31,912) | 35,365 | 6,007 | |||||||||||||
| Income tax provision | 631 | 2,244 | 2,747 | |||||||||||||
| Income (loss) from continuing operations | (32,543) | 33,121 | 3,260 | |||||||||||||
| Income (loss) from discontinued operations, net of tax | 119 | (278) | (221) | |||||||||||||
| Net income (loss) | (32,424) | 32,843 | 3,039 | |||||||||||||
| Net loss from noncontrolling interest | (243) | |||||||||||||||
| Net income (loss) attributable to Cohu | $ (32,181) | $ 32,843 | $ 3,039 | |||||||||||||
| Weighted average shares used in computing income (loss) per share: | ||||||||||||||||
| Basic (in shares) | 31,776 | 27,836 | 26,659 | |||||||||||||
| Diluted (in shares) | 31,776 | 28,916 | 27,480 | |||||||||||||
| Basic: | ||||||||||||||||
| Income (loss) from continuing operations before non-controlling interest (in dollars per share) | $ (1.02) | [5] | $ 1.19 | [5] | $ 0.12 | |||||||||||
| Income (loss) from discontinued operations (in dollars per share) | [4] | 0 | (0.01) | (0.01) | ||||||||||||
| Net loss attributable to noncontrolling interest (in dollars per share) | (0.01) | |||||||||||||||
| Net income (loss) attributable to Cohu (in dollars per share) | (1.01) | [5] | 1.18 | [5] | 0.11 | |||||||||||
| Diluted: | ||||||||||||||||
| Income (loss) from continuing operations before non-controlling interest (in dollars per share) | (1.02) | [5] | 1.15 | [5] | 0.12 | |||||||||||
| Income (loss) from discontinued operations (in dollars per share) | [4] | 0 | (0.01) | (0.01) | ||||||||||||
| Net loss attributable to noncontrolling interest (in dollars per share) | (0.01) | |||||||||||||||
| Net income (loss) attributable to Cohu (in dollars per share) | $ (1.01) | [5] | $ 1.14 | [5] | $ 0.11 | |||||||||||
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| X | ||||||||||
- Definition The amount of net income (loss) attributable to noncontrolling interest per each share of common stock or unit outstanding during the reporting period. No definition available.
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| X | ||||||||||
- Definition The amount of net income (loss) attributable to the noncontrolling interest during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. No definition available.
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| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Net income (loss) | $ (32,424) | $ 32,843 | $ 3,039 |
| Net loss from noncontrolling interest | (243) | ||
| Net income (loss) attributable to Cohu | (32,181) | 32,843 | 3,039 |
| Foreign currency translation adjustments, net of tax | (8,905) | 11,345 | (5,789) |
| Adjustments related to postretirement benefits | 805 | (1,248) | (316) |
| Change in unrealized gain/loss on investments, net of tax | 7 | (2) | (5) |
| Other comprehensive income (loss), net of tax | (8,093) | 10,095 | (6,110) |
| Other comprehensive income (loss) attributable to noncontrolling interest | (5) | ||
| Other comprehensive income (loss), net of tax | (8,093) | 10,095 | (6,110) |
| Comprehensive income (loss) | (40,517) | 42,938 | (3,071) |
| Comprehensive income (loss) attributable to noncontrolling interest | (248) | ||
| Comprehensive income (loss) attributable to Cohu | $ (40,269) | $ 42,938 | $ (3,071) |
| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax of other comprehensive income (loss) attributable to noncontrolling interests. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
AOCI Attributable to Parent [Member] |
Noncontrolling Interest [Member] |
Total |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Changes in cumulative translation adjustment | $ (5,789) | ||||||||||
| Adjustments related to postretirement benefits, net of tax | (316) | ||||||||||
| Changes in unrealized gains and losses on investments, net of tax | (5) | ||||||||||
| Net loss from noncontrolling interest | |||||||||||
| Balance at Dec. 31, 2016 | $ 26,842 | $ 111,950 | $ 124,559 | $ (27,882) | 235,469 | ||||||
| Cumulative effect of accounting change (b) | Adjustments for New Accounting Principle, Early Adoption [Member] | [1] | 249 | (249) | ||||||||
| Balance at Dec. 31, 2015 | 26,240 | 105,516 | 128,153 | (21,772) | 238,137 | ||||||
| Cumulative effect of accounting change (a) (Adjustments for New Accounting Principle, Early Adoption [Member]) at Dec. 31, 2015 | [1] | 249 | (249) | ||||||||
| Net income | 3,039 | 3,039 | |||||||||
| Changes in cumulative translation adjustment | (5,789) | (5,789) | |||||||||
| Adjustments related to postretirement benefits, net of tax | (316) | (316) | |||||||||
| Changes in unrealized gains and losses on investments, net of tax | (5) | (5) | |||||||||
| Cash dividends - $0.24 per share | (6,384) | (6,384) | |||||||||
| Exercise of stock options | 101 | 694 | 795 | ||||||||
| Shares issued under ESPP | 111 | 959 | 1,070 | ||||||||
| Shares issued for restricted stock units vested | 581 | (581) | |||||||||
| Repurchase and retirement of stock | (191) | (2,030) | (2,221) | ||||||||
| Share-based compensation expense | 7,143 | 7,143 | |||||||||
| Cumulative effect of accounting change (b) | Adjustments for New Accounting Principle, Early Adoption [Member] | [1] | 249 | (249) | ||||||||
| Net loss | 3,039 | 3,039 | |||||||||
| Balance at Dec. 31, 2016 | 26,842 | 111,950 | 124,559 | (27,882) | 235,469 | ||||||
| Net income | 32,843 | 32,843 | |||||||||
| Changes in cumulative translation adjustment | 11,345 | 11,345 | |||||||||
| Adjustments related to postretirement benefits, net of tax | (1,248) | (1,248) | |||||||||
| Changes in unrealized gains and losses on investments, net of tax | (2) | (2) | |||||||||
| Cash dividends - $0.24 per share | (6,676) | (6,676) | |||||||||
| Exercise of stock options | 1,164 | 11,617 | 12,781 | ||||||||
| Shares issued under ESPP | 99 | 1,140 | 1,239 | ||||||||
| Shares issued for restricted stock units vested | 595 | (595) | |||||||||
| Repurchase and retirement of stock | (211) | (3,456) | (3,667) | ||||||||
| Share-based compensation expense | 7,007 | 7,007 | |||||||||
| Net loss | 32,843 | 32,843 | |||||||||
| Net loss from noncontrolling interest | |||||||||||
| Balance at Dec. 30, 2017 | 28,489 | 127,663 | 150,726 | (17,787) | 289,091 | ||||||
| Cumulative effect of accounting change (b) | Adjustments for New Accounting Principle, Early Adoption [Member] | [2] | 1,057 | 1,057 | ||||||||
| Cumulative effect of accounting change (a) (Adjustments for New Accounting Principle, Early Adoption [Member]) at Dec. 30, 2017 | [2] | 1,057 | 1,057 | ||||||||
| Net income | (32,424) | (32,424) | |||||||||
| Changes in cumulative translation adjustment | (8,905) | (8,905) | |||||||||
| Adjustments related to postretirement benefits, net of tax | 805 | 805 | |||||||||
| Changes in unrealized gains and losses on investments, net of tax | 7 | 7 | |||||||||
| Cash dividends - $0.24 per share | (7,689) | (7,689) | |||||||||
| Exercise of stock options | 67 | 613 | 680 | ||||||||
| Shares issued under ESPP | 85 | 1,438 | 1,523 | ||||||||
| Shares issued for restricted stock units vested | 541 | (541) | |||||||||
| Repurchase and retirement of stock | (195) | (11,405) | (11,600) | ||||||||
| Share-based compensation expense | 18,280 | 18,280 | |||||||||
| Cumulative effect of accounting change (b) | Adjustments for New Accounting Principle, Early Adoption [Member] | [2] | 1,057 | 1,057 | ||||||||
| Net loss | (32,424) | (32,424) | |||||||||
| Net loss from noncontrolling interest | (299) | (243) | |||||||||
| Shares issued for acquisition of Xcerra | 11,776 | 283,642 | 295,418 | ||||||||
| Balance at Dec. 29, 2018 | $ 40,763 | $ 419,690 | $ 111,670 | $ (25,880) | $ (299) | $ 545,944 | |||||
| |||||||||||
| X | ||||||||||
- Definition Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. No definition available.
|
| X | ||||||||||
- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after income tax of income (loss) including the portion attributable to nonredeemable noncontrolling interest. Excludes the portion attributable to redeemable noncontrolling interest recognized as temporary equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Value of stock issued pursuant to acquisitions during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Aggregate change in value for stock issued during the period as a result of employee stock purchase plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Aggregate value of stock related to Restricted Stock Awards issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Value of stock issued as a result of the exercise of stock options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Retained Earnings [Member] | |||
| Cash dividend, per share (in dollars per share) | $ 0.24 | $ 0.24 | $ 0.24 |
| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Consolidated Statements of Cash Flows $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 29, 2018
USD ($)
|
Dec. 30, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Cash flows from operating activities: | |||
| Net income (loss) attributable to Cohu | $ (32,181) | $ 32,843 | $ 3,039 |
| Net loss from noncontrolling interest | (243) | ||
| Adjustments to reconcile net income (loss) to net cash provided by operating activities: | |||
| Loss on disposal of microwave equipment segment | 278 | 221 | |
| Total depreciation and amortization for reportable segments | 26,047 | 9,195 | 10,412 |
| Share-based compensation expense including restructuring charges | 18,279 | 7,007 | 7,143 |
| Amortization of inventory step-up and inventory related charges | 24,179 | 1,404 | |
| Accrued retiree benefits | (560) | 322 | 672 |
| Deferred income taxes | (8,207) | (3,791) | (1,065) |
| Adjustment to contingent consideration liability | 657 | 1,423 | |
| Changes in other assets | (2,961) | 1,501 | 415 |
| (Gain) loss on disposal and impairment of fixed assets | 293 | (42) | 31 |
| Changes in other accrued liabilities | 198 | 979 | 162 |
| Changes in current assets and liabilities, excluding effects from acquisitions and divestitures: | |||
| Accounts receivable | 5,785 | (3,259) | (4,617) |
| Inventories | 2,043 | (12,196) | 4,608 |
| Accrued compensation, warranty and other liabilities | 3,985 | 937 | (1,544) |
| Accounts payable | (7,103) | 4,157 | 5,678 |
| Deferred profit | 37 | (442) | 3,309 |
| Other current assets | 148 | 952 | (1,959) |
| Income taxes payable | 4,041 | (1,518) | (1,957) |
| Net cash provided by operating activities | 34,437 | 39,750 | 24,548 |
| Cash flows from investing activities, excluding effects from acquisitions and divestitures: | |||
| Net cash received from sale of land, facility and assets | 1,005 | 104 | 874 |
| Purchases of property, plant and equipment | (4,967) | (6,093) | (3,452) |
| Purchases of short-term investments | (38,700) | (37,010) | (50,568) |
| Sales and maturities of short-term investments | 59,469 | 47,671 | 20,230 |
| Net cash used in investing activities | (322,308) | (7,044) | (32,916) |
| Cash flows from financing activities: | |||
| Proceeds from Term Loan B | 348,250 | ||
| Payment of debt issuance costs | (7,072) | ||
| Cash dividends paid | (6,949) | (6,577) | (6,351) |
| Repayments of long-term debt | (2,323) | (1,631) | |
| Issuance (repurchases) of common stock, net including restricted stock units vested and settled with cash to satisfy tax liabilities | (8,978) | 10,353 | (356) |
| Payment of contingent consideration | (823) | ||
| Net cash provided by (used in) financing activities | 322,105 | 2,145 | (6,707) |
| Effect of exchange rate changes on cash and cash equivalents | (3,599) | 3,390 | (4,250) |
| Net increase (decrease) in cash and cash equivalents | 30,635 | 38,241 | (19,325) |
| Cash and cash equivalents at beginning of year | 134,286 | 96,045 | 115,370 |
| Cash and cash equivalents at end of year including cash from discontinued operations | 164,921 | 134,286 | 96,045 |
| Cash held by discontinued operations (Note 12) | (461) | ||
| Supplemental disclosure of cash flow information: | |||
| Cash paid during the year for income taxes | 6,243 | 7,094 | 6,808 |
| Cash paid for interest | 4,977 | ||
| Dividends declared but not yet paid | 2,445 | 1,705 | 1,606 |
| Property, plant and equipment purchases included in accounts payable | 599 | 260 | 445 |
| Inventory capitalized as capital assets | 857 | 190 | 201 |
| Capitalized cloud computing costs included in accounts payable | 829 | ||
| Xcerra [Member] | |||
| Cash flows from investing activities, excluding effects from acquisitions and divestitures: | |||
| Payment for purchase of business, net of cash received | (339,115) | ||
| Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] | |||
| Adjustments to reconcile net income (loss) to net cash provided by operating activities: | |||
| Adjustment to contingent consideration liability | 657 | 1,423 | |
| Cash flows from investing activities, excluding effects from acquisitions and divestitures: | |||
| Payment for purchase of business, net of cash received | $ (11,716) | ||
| X | ||||||||||
- Definition The amortization expense related to the stepped-up basis of inventory. No definition available.
|
| X | ||||||||||
- Definition Future cash outflow to pay for capitalized cloud computing service costs that have occurred. No definition available.
|
| X | ||||||||||
- Definition The amount of increase (decrease) in deferred profit during the period. No definition available.
|
| X | ||||||||||
- Definition Represents information about inventory capitalized as property, plant and equipment. No definition available.
|
| X | ||||||||||
- Definition The amount of cash inflow (outflow) from bank debt. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. No definition available.
|
| X | ||||||||||
- Definition Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of currency on hand, demand deposits with banks or financial institutions, and other kinds of accounts that have the general characteristics of demand deposits, held by a disposal group. No definition available.
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The increase (decrease) during the reporting period in other expenses incurred but not yet paid. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in operating assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cost (reversal of cost) for pension and other postretirement benefits. No definition available.
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The net cash inflow or outflow resulting from the entity's share transaction. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in investing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 1 - Summary of Significant Accounting Policies |
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| Notes to Financial Statements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Significant Accounting Policies [Text Block] |
Basis of Presentation – Cohu, Inc. (“Cohu”, “we”, “our”, “us” and the “Company”), through our wholly owned subsidiaries, is a provider of semiconductor test equipment and services. Our Consolidated Financial Statements include the accounts of Cohu and our wholly owned subsidiaries and variable interest entities (“VIEs”) for which we are the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation. We evaluate the need to consolidate affiliates based on standards set forth in ASC Topic 810, Consolidation (“ASC 810” ).The consolidated financial statements include the accounts of Cohu and a variable interest entity (“VIE”) that was acquired as part of our acquisition of Xcerra Corporation (“Xcerra”) and in which we have determined we are the primary beneficiary. The non-controlling interest in ALBS Solutions Sdn Bhd (“ALBS”) represents the 80% equity interest that is not held by Cohu. ALBS is a privately held corporation which provides high-tech semiconductor automation systems to different industrial users. All significant consolidated transactions and balances have been eliminated in consolidation.The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. Our fiscal years are based on a 52 - or 53 -week period ending on the last Saturday in December. Our current fiscal year, which ended on December 29, 2018, consisted of 52 weeks. Our fiscal years ended on December 30, 2017, and December 31, 2016, consisted of 52 weeks and 53 weeks, respectively.Principles of Consolidation for Variable Interest Entities – We follow ASC Topic 810 -10 -15 guidance with respect to accounting for VIEs. These entities do not have sufficient equity at risk to finance their activities without additional subordinated financial support from other parties or whose equity investors lack any of the characteristics of a controlling financial interest. A variable interest is an investment or other interest that will absorb portions of a VIE’s expected losses or receive portions of its expected residual returns and are contractual, ownership, or pecuniary in nature and that change with changes in the fair value of the entity’s net assets. A reporting entity is the primary beneficiary of a VIE and must consolidate it when that party has a variable interest, or combination of variable interests, that provides it with a controlling financial interest. A party is deemed to have a controlling financial interest if it meets both of the power and losses/benefits criteria. The power criterion is the ability to direct the activities of the VIE that most significantly impact its economic performance. The losses/benefits criterion is the obligation to absorb losses from, or right to receive benefits from, the VIE that could potentially be significant to the VIE. The VIE model requires an ongoing reconsideration of whether a reporting entity is the primary beneficiary of a VIE due to changes in facts and circumstances.As of December 29, 2018 and December 30, 2017, we consolidated one and zero VIEs, respectively.Cohu is the primary beneficiary of ALBS which qualifies as a VIE that meets the definition of a business. As such, the assets, liabilities, and noncontrolling interest of ALBS were measured at fair value in accordance with ASC 805. The assets and liabilities and revenues and expenses of this VIE are included in the financial statements of ALBS and are further included in the consolidated financial statements. As of December 29, 2018, the assets and liabilities of ALBS set are immaterial to Cohu and, therefore, not shown separately on our Consolidated Balance Sheets. The owner’s equity and net loss of ALBS are considered attributable to non-controlling interest.Reclassifications – In conjunction with the acquisition of Xcerra the Company assessed the need to realign its financial statement presentation and certain income statement classifications were adjusted with prior periods reclassified to conform with current period presentation. The changes made were as follows:
A summary of the reclassifications described above and the impact on our Consolidated Statements of Operations is as follows:
Discontinued Operations – Management has determined that the fixtures services business, that was acquired as part of Xcerra, does not align with Cohu’s long-term strategic plan and management is in the process of divesting this portion of the business. As a result, the assets of our fixtures business are considered “held for sale” and the operations of our fixtures business are considered “discontinued operations” as of December 29, 2018. See Note 12, “Discontinued Operations” for additional information. Unless otherwise indicated, all amounts herein relate to continuing operations.Income (Loss ) Per Share – Basic income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period. Diluted income (loss) per share includes the dilutive effect of common shares potentially issuable upon the exercise of stock options, vesting of outstanding restricted stock and performance stock units and issuance of stock under our employee stock purchase plan using the treasury stock method. In loss periods, potentially dilutive securities are excluded from the per share computations due to their anti-dilutive effect. For purposes of computing diluted income (loss) per share, stock options with exercise prices that exceed the average fair market value of our common stock for the period are excluded. For the years ended December 30, 2017 and December 31, 2016, approximately 77,000 and 697,000 shares of our common stock were excluded from the computation, respectively.The following table reconciles the denominators used in computing basic and diluted income (loss) per share:
Cohu has utilized the “control number” concept in the computation of diluted earnings per share to determine whether potential common stock instruments are dilutive. The control number used is income from continuing operations. The control number concept requires that the same number of potentially dilutive securities applied in computing diluted earnings per share from continuing operations be applied to all other categories of income or loss, regardless of their anti-dilutive effect on such categories. Cash, Cash Equivalents and Short-term Investments – Highly liquid investments with insignificant interest rate risk and original maturities of three months or less are classified as cash and cash equivalents. Investments with maturities greater than three months are classified as short-term investments. All of our short-term investments are classified as available-for-sale and are reported at fair value, with any unrealized gains and losses, net of tax, recorded in the statement of comprehensive income (loss). We manage our cash equivalents and short-term investments as a single portfolio of highly marketable securities. We have the ability and intent, if necessary, to liquidate any of our investments in order to meet the liquidity needs of our current operations during the next 12 months. Accordingly, investments with contractual maturities greater than one year have been classified as current assets in the accompanying consolidated balance sheets.Fair Value of Financial Instruments – The carrying amounts of our financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued expenses, approximate fair value due to the short maturities of these financial instruments.Concentration of Credit Risk – Financial instruments that potentially subject us to significant credit risk consist principally of cash equivalents, short-term investments and trade accounts receivable. We invest in a variety of financial instruments and, by policy, limit the amount of credit exposure with any one issuer.Trade accounts receivable are presented net of allowance for doubtful accounts of $0.3 million at December 29, 2018, and $0.2 million at December 30, 2017. Our customers primarily include semiconductor manufacturers and semiconductor test subcontractors located throughout many areas of the world. While we believe that our allowance for doubtful accounts is adequate and represents our best estimate of potential loss exposure at December 29, 2018, we will continue to monitor customer liquidity and other economic conditions, which may result in changes to our estimates regarding collectability.Inventories – Inventories are stated at the lower of cost, determined on a first -in, first -out basis, or net realizable value. Cost includes labor, material and overhead costs. Determining market value of inventories involves numerous estimates and judgments including projecting average selling prices and sales volumes for future periods and costs to complete and dispose of inventory. As a result of these analyses, we record a charge to cost of sales in advance of the period when the inventory is sold when estimated market values are below our costs. Charges to cost of sales for excess and obsolete inventories totaled $10.8 million in 2018. Included in this amount is $9.4 million of inventory charges related to the decision to end manufacturing of certain of Xcerra’s semiconductor test handler products. In 2017 and 2016 we recorded charges of $1.1 million in both periods.Inventories by category were as follows (in thousands) :
Property, Plant and Equipment – Depreciation and amortization of property, plant and equipment, both owned and under capital lease, is calculated principally on the straight-line method based on estimated useful lives of thirty to forty years for buildings, five to fifteen years for building improvements, three to ten years for machinery, equipment and software and the lease life for capital leases. Land is not depreciated.Property, plant and equipment, at cost, consisted of the following (in thousands) :
Depreciation expense was $8.8 million in 2018, $5.0 million in 2017 and $3.5 million in 2016. Segment Information – We applied the provisions of ASC Topic 280, Segment Reporting, (“ASC 280” ), which sets forth a management approach to segment reporting and establishes requirements to report selected segment information quarterly and to report annually entity-wide disclosures about products, major customers and the geographies in which the entity holds material assets and reports revenue. An operating segment is defined as a component that engages in business activities whose operating results are reviewed by the chief operating decision maker and for which discrete financial information is available. Subsequent to the acquisition of Xcerra on October 1, 2018, we have determined that our four identified operating segments are: Test Handler Group (THG), Semiconductor Tester Group (STG), Interface Solutions Group (ISG) and PCB Test Group (PTG). Our THG, STG and ISG operating segments qualify for aggregation under ASC 280 due to similarities in their customers, their economic characteristics, and the nature of products and services provided. As a result, we report in two segments, Semiconductor Test and Inspection Equipment (“Semiconductor Test & Inspection”) and PCB Test Equipment (“PCB Test”).Goodwill, Purchased Intangible Assets and Other Long-lived Assets – We evaluate goodwill for impairment annually and when an event occurs or circumstances change that indicate that the carrying value may not be recoverable. We test goodwill for impairment by first comparing the book value of net assets to the fair value of the reporting units. If the fair value is determined to be less than the book value, a second step is performed to compute the amount of impairment as the difference between the estimated fair value of goodwill and the carrying value. We estimated the fair values of our reporting units primarily using the income approach valuation methodology that includes the discounted cash flow method, taking into consideration the market approach and certain market multiples as a validation of the values derived using the discounted cash flow methodology. Forecasts of future cash flows are based on our best estimate of future net sales and operating expenses, based primarily on customer forecasts, industry trade organization data and general economic conditions.We conduct our annual impairment test as of October 1st of each year, and determined there was no impairment as of October 1, 2018 as we determined that the estimated fair values of our reporting units exceeded their carrying values on that date. Other events and changes in circumstances may also require goodwill to be tested for impairment between annual measurement dates. As of December 29, 2018, we do not believe there have been any events or circumstances that would require us to perform an interim goodwill impairment review. In the event we determine that an interim goodwill impairment review is required, in a future period, the review may result in an impairment charge, which would have a negative impact on our results of operations.Long-lived assets, other than goodwill, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets might not be recoverable. Conditions that would necessitate an impairment assessment include a significant decline in the observable market value of an asset, a significant change in the extent or manner in which an asset is used, or any other significant adverse change that would indicate that the carrying amount of an asset or group of assets may not be recoverable. For long-lived assets, impairment losses are only recorded if the asset’s carrying amount is not recoverable through its undiscounted, probability-weighted future cash flows. We measure the impairment loss based on the difference between the carrying amount and estimated fair value.Product Warranty – Product warranty costs are accrued in the period sales are recognized. Our products are generally sold with standard warranty periods, which differ by product, ranging from 12 - to 36 -months. Parts and labor are typically covered under the terms of the warranty agreement. Our warranty expense accruals are based on historical and estimated costs by product and configuration. From time-to-time we offer customers extended warranties beyond the standard warranty period. In those situations the revenue relating to the extended warranty is deferred at its estimated fair value and recognized on a straight-line basis over the contract period. Costs associated with our extended warranty contracts are expensed as incurred.Income Taxes – We assess our income tax positions and record tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances and information available at the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, we have recorded the largest amount of tax benefit with a greater than 50 percent likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements. Where applicable, associated interest and penalties have also been recognized and recorded, net of federal and state tax benefits, in income tax expense.The U.S. Tax Cuts and Jobs Act (“Tax Act”) was enacted on December 22, 2017. The accounting for the tax effects of the enactment of the Tax Act was completed in 2018. Contingencies and Litigation – We assess the probability of adverse judgments in connection with current and threatened litigation. We would accrue the cost of an adverse judgment if, in our estimation, the adverse outcome is probable and we can reasonably estimate the ultimate cost.Adoption of New Revenue Accounting Standard – We adopted ASC Topic 606, Revenue from Contracts with Customers (“ASC , on 606” ) December 31, 2017, the first day of our 2018 fiscal year. We elected to implement the new standard using the modified retrospective method of adoption which only applies to those contracts which were not completed as of December 31, 2017. Revenue for the year ended December 29, 2018, has been accounted for using ASC 606 and the prior years ended December 30, 2017, December 31, 2016, have not been adjusted. Upon adoption of ASC 606, we recorded a cumulative-effect adjustment to retained earnings of $1.1 million on December 31, 2017, which represents the impact of ASC 606 on our deferred revenue.Material changes recorded in connection with the cumulative-effect adjustment were as follows (in thousands) :
The adoption of ASC 606 had no impact to cash used in net operating, investing or financing activities in our consolidated statements of cash flows. The following table presents the amounts by which financial statement line items included in our consolidated statements of operations for the year ended December 29, 2018 and our consolidated balance sheet at December 29, 2018 were materially affected due to the adoption of ASC 606 (in thousands) :
Under ASC 606 our revenue will continue to be recognized at a point in time when the performance obligation has been satisfied and transfer of control has occurred, typically, this occurs upon shipment of products to our customers. In certain instances, when customer payment terms provide that a minority portion of the equipment purchase price be paid only upon customer acceptance, recognition of revenue may occur sooner under ASC 606. Revenue Recognition – Our net sales are derived from the sale of products and services and are adjusted for estimated returns and allowances, which historically have been insignificant. We recognize revenue when the obligations under the terms of a contract with our customers are satisfied; generally, this occurs with the transfer of control of our systems, non-system products or services. In circumstances where control is not transferred until destination or acceptance, we defer revenue recognition until such events occur.Revenue for established products that have previously satisfied a customer’s acceptance requirements is generally recognized upon shipment. In cases where a prior history of customer acceptance cannot be demonstrated or from sales where customer payment dates are not determinable and in the case of new products, revenue and cost of sales are deferred until customer acceptance has been received. Our post-shipment obligations typically include installation and standard warranties. The estimated fair value of installation related revenue is recognized in the period the installation is performed. Service revenue is recognized over time as we transfer control to our customer for the related contract or upon completion of the services if they are short-term in nature. Spares, contactor and kit revenue is generally recognized upon shipment.Certain of our equipment sales have multiple performance obligations. These arrangements involve the delivery or performance of multiple performance obligations, and transfer of control of performance obligations may occur at different points in time or over different periods of time. For arrangements containing multiple performance obligations, the revenue relating to the undelivered performance obligation is deferred using the relative standalone selling price method utilizing estimated sales prices until satisfaction of the deferred performance obligation.Unsatisfied performance obligations primarily represent contracts for products with future delivery dates. We have $19.1 million of revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisified) as of December 29, 2018. Revenue recorded during the year ended December 29, 2018, included $6.6 million of revenue that was deferrred as of December 30, 2017. We generally sell our equipment with a product warranty. The product warranty provides assurance to customers that delivered products are as specified in the contract (an “assurance-type warranty”). Therefore, we account for such product warranties under ASC 460, Guarantees (“ASC , and 460” )not as a separate performance obligation.The transaction price reflects our expectations about the consideration we will be entitled to receive from the customer and may include fixed or variable amounts. Fixed consideration primarily includes sales to customers that are known as of the end of the reporting period. Variable consideration includes sales in which the amount of consideration that we will receive is unknown as of the end of a reporting period. Such consideration primarily includes sales made to certain customers with cumulative tier volume discounts offered. Variable consideration arrangements are rare; however, when they occur, we estimate variable consideration as the expected value to which we expect to be entitled. Included in the transaction price estimate are amounts in which it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Variable consideration that does not meet revenue recognition criteria is deferred. Our contracts are typically less than one year in duration and we have elected to use the practical expedient available in ASC 606 to expense cost to obtain contracts as they are incurred because they would be amortized over less than one year.Accounts receivable represents our unconditional right to receive consideration from our customers. Payments terms do not exceed one year from the invoice date and therefore do not include a significant financing component. To date, there have been no material impairment losses on accounts receivable. There were no material contract assets or contract liabilities recorded on the consolidated balance sheet in any of the periods presented.On shipments where sales are not recognized, gross profit is generally recorded as deferred profit in our consolidated balance sheet representing the difference between the receivable recorded and the inventory shipped. In certain instances where customer payments are received prior to product shipment, the customer’s payments are recorded as customer advances. At December 29, 2018, we had deferred revenue totaling approximately $10.8 million, current deferred profit of $6.9 million and deferred profit expected to be recognized after one year included in noncurrent other accrued liabilities of $2.0 million. At December 30, 2017, we had deferred revenue totaling approximately $10.4 million, current deferred profit of $6.6 million and deferred profit expected to be recognized after one year included in noncurrent other accrued liabilities of $0.8 million. Our balances at December 29, 2018, include a $1.1 million beginning retained earnings adjustment as a result of our adoption of ASC 606 on the first day of fiscal 2018. The periodic change is primarily a result of increases and decreases in deferrals of revenue associated with product shipments made to our customers in accordance with our revenue recognition policy. In addition, we acquired $1.5 million in deferred profit as part of our acquisition of Xcerra on October 1, 2018. Net sales by type and segment are as follows (in thousands) :
Advertising Costs – Advertising costs are expensed as incurred and were not material for all periods presented.Restructuring Costs –one -time termination benefits in accordance with ASC Topic 420 (“ASC 420” ), Exit or Disposal Cost Obligations. The timing of recognition for severance costs accounted for under ASC 420 depends on whether employees are required to render service until they are terminated in order to receive the termination benefits. If employees are required to render service until they are terminated in order to receive the termination benefits, a liability is recognized ratably over the future service period. Otherwise, a liability is recognized when management has committed to a restructuring plan and has communicated those actions to employees. Employee termination benefits covered by existing benefit arrangements are recorded in accordance with ASC Topic 712, Nonretirement Postemployment Benefits. These costs are recognized when management has committed to a restructuring plan and the severance costs are probable and estimable.Debt Issuance Costs – We capitalize costs related to the issuance of debt. Debt issuance costs directly related to our Term Loam B are presented within noncurrent liabilities as a reduction of long-term debt in our consolidated balance sheets. The amortization of such costs is recognized as interest expense using the effective interest method over the term of the respective debt issue. Amortization related to deferred debt issuance costs and original discount costs was $0.3 million for the year ended December 29, 2018. Share-based Compensation – We measure and recognize all share-based compensation under the fair value method. Our estimate of share-based compensation expense requires a number of complex and subjective assumptions including our stock price volatility, employee exercise patterns (expected life of the options) and related tax effects. The assumptions used in calculating the fair value of share-based awards represent our best estimates, but these estimates involve inherent uncertainties and the application of management judgment. Although we believe the assumptions and estimates we have made are reasonable and appropriate, changes in assumptions could materially impact our reported financial results.Foreign Remeasurement and Currency Translation – Assets and liabilities of our wholly owned foreign subsidiaries that use the U.S. Dollar as their functional currency are re-measured using exchange rates in effect at the end of the period, except for nonmonetary assets, such as inventories and property, plant and equipment, which are re-measured using historical exchange rates. Revenues and costs are re-measured using average exchange rates for the period, except for costs related to those balance sheet items that are re-measured using historical exchange rates. Gains and losses on foreign currency transactions are recognized as incurred. During the years ended December 29, 2018 and December 31, 2016, we recognized foreign exchange gains totaling $1.7 million and $2.6 million, respectively, that are included in our consolidated statement of operations. During the year ended December 30, 2017, we recognized approximately $3.0 million of foreign exchange losses.Certain of our foreign subsidiaries have designated the local currency as their functional currency and, as a result, their assets and liabilities are translated at the rate of exchange at the balance sheet date, while revenue and expenses are translated using the average exchange rate for the period. Cumulative translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity. Accumulated Other Comprehensive Loss $25.9 million at December 29, 2018, and $17.8 million at December 30, 2017, and was attributed to, net of income taxes where applicable: foreign currency adjustments resulting from the translation of certain accounts into U.S. Dollars, unrealized losses and gains on investments and adjustments to accumulated postretirement benefit obligations. The U.S. Dollar strengthened relative to certain foreign currencies in countries where we have operations as of December 29, 2018, compared to December 30, 2017. Consequently, our accumulated other comprehensive loss increased by $8.9 million as a result of foreign currency translation during 2018. In the previous year, weakening of the U.S. Dollar led to a decrease in our accumulated other comprehensive loss of $11.3 million. Additional information related to accumulated other comprehensive loss, on an after-tax basis is included in Note 13. Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements – In August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018 -15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic , which amends ASU 350 -40 )No. 2015 -05, Customers Accounting for Fees in a Cloud Computing Agreement , to help entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement (hosting arrangement) by providing guidance for determining when the arrangement includes a software license. The most significant change will align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. Accordingly, the amendments in ASU 2018 -15 require an entity in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350 -40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments in ASU 2018 -15 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, although early adoption is permitted, including adoption in any interim period and the amendments can be applied either retrospectively or prospectively. Cohu adopted ASU 2018 -15 in the third quarter of 2018 prospectively for all implementation costs incurred related to our global cloud computing systems and capitalized $2.9 million as of December 29, 2018. These amounts are recorded as other current ($0.3 million) and non-current ($2.6 million) assets in our consolidated balance sheet.In March 2017, the FASB issued ASU No. 2017 -07, Compensation – Retirement Benefits (Topic , which provides additional guidance on the presentation of net periodic pension and postretirement benefit costs in the income statement and on the components eligible for capitalization. The amendments in this guidance require that an employer report the service cost component of the net periodic benefit costs in the same income statement line item as other compensation costs arising from services rendered by employees during the period. The non-service-cost components of net periodic benefit costs are to be presented in the income statement separately from the service cost components and outside a subtotal of income from operations. The guidance also allows for the capitalization of the service cost components, when applicable (i.e., as a cost of internally manufactured inventory or a self-constructed asset). The guidance is effective for annual periods beginning after 715 ) – Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost December 15, 2017, including interim periods within those annual periods. The amendments in this guidance are to be applied retrospectively. The adoption of ASU 2017 -07 did not have a material impact on our consolidated financial statements.In January 2017, the FASB issued ASU No. 2017 -01, Clarifying the Definition of a Business . It revises the definition of a business and provides a framework to evaluate when an input and a substantive process are present in an acquisition to be considered a business combination. This guidance is effective for annual periods beginning after December 15, 2017. The adoption of ASU 2017 -01 did not have a material impact on our financial statements.In November 2016, the FASB issued ASU No. 2016 -18, Restricted Cash . It requires that amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017. The adoption of ASU 2016 -18 did not have a material impact on our consolidated financial statements.In October 2016, the FASB issued ASU 2016 -16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory . ASU 2016 -16 changes the timing of income tax recognition for an intercompany sale of assets excluding inventory. ASU 2016 -16 requires the seller’s tax effects and the buyer’s deferred taxes to be recognized immediately upon the sale instead of deferring accounting for the income tax implications until the assets are sold to a third party or recovered through use. ASU 2016 -16 is effective for fiscal years beginning after December 15, 2017 including interim periods within the year of adoption. The adoption of ASU 2016 -16 did not have a material impact on our consolidated financial statements.In August 2016, the FASB issued ASU No. 2016 -15, Classification of Certain Cash Receipts and Cash Payments . It provides guidance on eight specific cash flow issues with the objective of reducing the existing diversity in practice in how they are classified in the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted, provided that all of the amendments are adopted in the same period. The adoption of ASU 2016 -15 did not have a material impact on our consolidated financial statements.Recently Issued Accounting Pronouncements August 2018, the FASB issued ASU 2018 -14, Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans , which improves defined benefit disclosure requirements by removing disclosures that are not cost beneficial, clarifying disclosures’ specific requirements and adding relevant disclosure requirements. This ASU is effective for fiscal years ending after December 15, 2020 and early adoption is permitted. The amendments in this ASU are required to be applied on a retrospective basis to all periods presented. We are currently assessing and have not yet determined the impact that the adoption of ASU 2018 -14 will have on the consolidated financial statements.In August 2018, the FASB issued ASU 2018 -13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which improves fair value disclosure requirements by removing disclosures that are not cost beneficial, clarifying disclosures’ specific requirements and adding relevant disclosure requirements. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted and an entity can choose to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. We are currently assessing and have not yet determined the impact that the adoption of ASU 2018 -13 will have on the consolidated financial statements.In June 2018, the FASB issued ASU No. 2018 -07, Improvements to Nonemployee Share-Based Payment Accounting (ASU . ASU 2018 -07 )2018 -07 simplifies the accounting for share-based payments to nonemployees by aligning it with the accounting for share-based payments to employees, with certain exceptions. Consistent with the accounting requirement for employee share-based payment awards, nonemployee share-based payment awards are measured at grant-date fair value of the equity instruments that an entity is obligated to issue when the good has been delivered, or the service has been rendered, and any other conditions necessary to earn the right to benefit from the instruments have been satisfied. The accounting standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Historically we have not issued share-based awards to nonemployees, so the adoption of ASU 2018 -13 should not have any impact on our consolidated financial statements.In February 2018, the FASB issued ASU 2018 -02, Income Statement-Reporting Comprehensive Income , to give companies the option to reclassify the income tax effects on items within accumulated other comprehensive income resulting from U.S. tax reform to retained earnings. ASU 2018 -02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those years. Early adoption is permitted. We are currently assessing and have not yet determined the impact ASU 2018 -02 may have on our consolidated financial statements.In January 2017, the FASB issued ASU No. 2017 -04, Simplifying the Test for Goodwill Impairment . It eliminates Step 2 from the goodwill impairment test and requires an entity to recognize an impairment charge for the amount by which the carrying amount of goodwill exceeds the reporting unit's fair value, not to exceed the carrying amount of goodwill. This guidance is effective for annual and any interim impairment tests in fiscal years beginning after December 15, 2019. We do not expect this guidance to have any impact on our consolidated financial statements.In February 2016, the FASB issued ASU 2016 -02, Leases (Topic . This ASU requires lessees to record a right of use (“ROU”) asset and a liability for virtually all leases This guidance is effective for interim and annual reporting periods beginning after 842 ) December 15, 2018. In July 2018, the FASB issued ASU 2018 -10, Codification Improvements to Topic , Leases. ASU 842 2018 -10 includes certain clarifications to address potential narrow-scope implementation issues. Additionally, in July 2018, the FASB issued ASU 2018 -11, Targeted Improvements to Topic . ASU 842, Leases2018 -11 provides an additional optional transition method to adopt ASU 2016 -02. The two permitted transition methods are the modified retrospective approach, which applies the new lease requirements at the beginning of the earliest period presented, and the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The new lease standard will be effective for us in the first quarter of 2019. We will adopt the new standard effective December 30, 2018, which is the first day of our 2019 fiscal year.We plan to adopt the new standard using the optional transition method and to elect the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows us to carryforward the historical lease classification. We will make an accounting policy election to not record ROU assets and lease liabilities for leases with an initial term of 12 months or less. We will recognize those lease payments in the consolidated statements of operations on a straight-line basis over the lease term. We will also make an accounting policy election to use the practical expedient allowed in the standard to not separate lease and non-lease components when calculating the lease liability under ASU 2016 -02. Related to adoption of the new standard, we have implemented internal controls and a lease accounting technology system to track the ROU asset and lease liability balances and prepare the related footnote disclosures.As discussed throughout this document we completed the acquisition of Xcerra on October 1, 2018. Prior to being acquired by Cohu, Xcerra’s fiscal year ended on July 31st and Topic 842 would have been effective for it beginning on August 1, 2019. Due to the timing of the acquisition and Xcerra’s state of preparedness in light of the change in effective date of the standard we are still in the process of completing our analysis of the impact this guidance will have on our consolidated financial statements and on our disclosures. We have determined that most of our leases fall into one of four categories: real estate, machinery, office equipment, and vehicles. Real estate agreements represent a majority of our rent expense and vary based on various factors negotiated by the landlord; machinery agreements are related to the use of factory machinery; and office equipment and vehicle leases typically utilize standard master leasing contracts that have similar terms. We currently expect the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the company is the lessee. |
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| Business Combination Disclosure [Text Block] |
Pursuant to the Agreement and Plan of Merger (the “Merger Agreement”) dated as of May 7, 2018, among Cohu, Inc., a Delaware corporation (“Cohu”), Xcerra Corporation, a Massachusetts corporation (“Xcerra”), and Xavier Acquisition Corporation, a Delaware corporation and a wholly owned subsidiary of Cohu (“Merger Sub”), Merger Sub merged with and into Xcerra (the “Merger”), with Xcerra surviving such merger as a wholly owned subsidiary of Cohu. The Merger was effective on October 1, 2018 ( “the Effective Time”). At the Effective Time, each share of Xcerra Common Stock issued and outstanding immediately prior to the Effective Time (other than dissenting shares and shares held by Cohu, Merger Sub, Xcerra or any direct or indirect wholly owned subsidiary of Cohu or Xcerra), were converted into the right to receive, in the aggregate for all shares of Xcerra Common Stock, consideration, which totaled approximately $794.4 million as of the Effective Time.Xcerra is comprised of four businesses in the semiconductor and electronics manufacturing test markets: atg-Luther & Maelzer, Everett Charles Technologies, LTX-Credence and Multitest. The combination of these businesses creates a company with a broad spectrum of semiconductor and PCB test expertise that drives innovative new products and services, and the ability to deliver to customers fully integrated semiconductor test cell solutions. Xcerra addresses the broad, divergent requirements of the mobility, industrial, automotive and consumer end markets, offering a comprehensive portfolio of solutions and technologies, and a global network of strategically deployed applications and support resources. The acquisition of Xcerra was a strategic transaction to expand our total available market, extend our market leadership and broaden our product offerings.Cohu financed the Merger, including all related fees and expenses, with the following:
On October 1, 2018, Cohu entered into a Credit Agreement with Cohu, as borrower, certain of its subsidiaries as guarantor subsidiaries, the financial institutions party thereto from time to time as lenders, and Deutsche Bank AG New York Branch, as administrative agent and collateral agent, providing for a $350.0 million Credit Facility (the “Credit Facility”), and borrowed the full amount. Loans under the Credit Facility amortize in equal quarterly installments equal to 0.25% of the original principal amount thereof, with the balance payable at maturity. Subject to certain exceptions and thresholds, the Credit Facility will also require mandatory prepayments in connection with (i) excess cash flow, (ii) non-ordinary course asset sales and other dispositions and (iii) the issuance of certain debt obligations, among other things. Cohu has the right to prepay loans under the Credit Agreement in whole or in part at any time, without premium or penalty other than a 1.00% prepayment fee in connection with certain “repricing” transactions on or before the sixth month anniversary of the closing date of the Credit Agreement. Amounts repaid in respect of loans under the Credit Facility may not be reborrowed. All outstanding principal and interest in respect of the Credit Facility must be repaid on or before October 1, 2025. The loans under the Term Loan Facility bear interest, at Cohu’s option, at a floating annual rate equal to LIBOR plus a margin of 3.00%. The lender may accelerate the payment terms of the Credit Agreement upon the occurrence of certain events of default set forth therein, which include: the failure of Cohu to make timely payments of amounts due under the Credit Agreement, the failure of the Cohu to adhere to the representations and covenants set forth in the Credit Agreement or to provide required notices, upon the event that related collateral agreements become ineffective, upon the event that certain legal judgments are entered against Cohu, the insolvency of Cohu, or upon the change of control of Cohu. Immediately prior to the Effective Time, each Xcerra RSU that was vested was cancelled and the holder received cash and share consideration for the outstanding shares. Each unvested RSU held by employees of Xcerra were assumed by Cohu and converted into an RSU representing the number of whole shares of Cohu common stock based on a conversion formula resulting in the number of assumed RSUs described above. The acquisition method of accounting is based on ASC 805, Business Combinations (“ASC , and uses the fair value concepts defined in ASC 805” )820, Fair Value Measurement (“ASC . The purchase price allocation described herein is preliminary and is based on the information that was available to make estimates of the fair value and 820” ) may change as further information becomes available and additional analyses are completed. While we believe such information provides a reasonable basis for estimating the fair values, we may obtain more information and evidence during the measurement period that result in changes to the estimated fair value amounts. The measurement period ends on the earlier of one year after the acquisition date or the date we receive the information about the facts and circumstances that existed at the acquisition date. Subsequent adjustments, if necessary, will be recognized during the period in which the amounts are determined. These refinements include: (1 ) changes in the estimated fair value of certain intangible assets acquired; and (2 ) changes in deferred tax assets and liabilities related to the fair value estimates.The acquisition was nontaxable to Cohu and certain of the assets acquired, including goodwill and intangibles, will not be deductible for tax purposes. The acquired assets and liabilities of Xcerra were recorded at their respective fair values including an amount for goodwill which represents the purchase price paid in excess of the fair value of net tangible and intangible assets acquired, and is attributable primarily to expected synergies, economies of scale and the assembled workforce of Xcerra. Goodwill has been allocated to our THG, STG, ISG and PTG operating segments.ASC 805 requires, among other things, that most assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. In addition, ASC 805 requires that the consideration transferred be measured at the date the merger is completed at the then-current market price. The market price of the shares of Cohu Common Stock at the Effective Time was $25.10 which was based upon the closing price of shares of Cohu Common Stock on the NASDAQ Global Select Market on Friday, September 28, 2018, the last day of trading prior to the Effective Time.ASC 820 defines the term “fair value” and sets forth the valuation requirements for any asset or liability measured at fair value, expands related disclosure requirements and specifies a hierarchy of valuation techniques based on the nature of the inputs used to develop the fair value measurements. Fair value is defined in ASC 820 as “the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.” This is an exit price concept for the valuation of the asset or liability. In addition, market participants are assumed to be buyers and sellers in the principal (or the most advantageous) market for the asset or liability. Fair value measurements for an asset assume the highest and best use by these market participants. As a result of these standards, Cohu may be required to record the fair value of assets which are not intended to be used or sold and/or to value assets at fair values that do not reflect Cohu’s intended use of those assets. Many of these fair value measurements can be highly subjective, and it is possible that other professionals, applying reasonable judgment to the same facts and circumstances, could develop and support a range of alternative estimated amounts.Under ASC 805, acquisition-related transaction costs (e.g., advisory, legal, investment banking and other professional fees) are not included as a component of consideration transferred but are accounted for as expenses in the periods in which such costs are incurred. Total Merger-related transaction costs, that exclude other costs related to employee termination and restructuring, incurred by Cohu were $9.8 million in the year ended December 29, 2018. Severance and other separation payments made to certain executive officers of Xcerra related to change-in-control with double trigger provisions in their existing employment agreements totaled $6.9 million in the year ended December 29, 2018. The table below summarizes the preliminary assets acquired and liabilities assumed as of October 1, 2018 ( in thousands ):
We recorded a $19.6 million step-up of inventory to its fair value as of the acquisition date based on the preliminary valuation.The preliminary allocation of the intangible assets subject to amortization is as follows (in thousands) :
Acquired intangible assets reported above are being amortized using the straight-line method over their estimated useful lives which approximates the pattern of how the economic benefit is expected to be used. This includes amounts allocated to customer relationships because of anticipated high customer retention rates that are common in the semiconductor capital equipment industry. The value assigned to developed technology was determined by using the multi-period excess earnings method under the income approach. Developed technology, which comprises products that have reached technological feasibility, includes the products in Xcerra’s product line. The revenue estimates used to value the developed technology were based on estimates of relevant market sizes and growth factors, expected trends in technology and the nature and expected timing of new product introductions by Xcerra and competitors. The estimated cash flows were based on revenues for the developed technology net of operating expenses and net of contributory asset charges. The discount rate utilized to discount the net cash flows of the developed technology to present value was based on the risk associated with the respective cash flows taking into consideration the perceived risk of the technology relative to the other acquired assets, the weighted average cost of capital, the internal rate of return, and the weighted average return on assets. The value assigned to customer relationships was determined by using the with and without method under the income approach, which analyzes the difference in discounted cash flows generated with the customer relationships in place compared to the discounted cash flows generated without the customer relationships in place. In-process research and development (“IPR&D”) represents the estimated fair value assigned to research and development projects acquired in a business combination that have not been completed at the date of acquisition and which have no alternative future use. IPR&D is initially accounted for as an indefinite-lived intangible asset. Once a project reaches technological feasibility amounts capitalized related to the project are reclassified to developed technology and the intangible asset begins to be amortized over its estimated useful life. For the IPR&D, additional research and development will be required to assess technological feasibility.The value assigned to backlog acquired was estimated based upon the contractual nature of the backlog as of October 1, 2018, using the income approach to discount back to present value the cash flows attributable to the backlog.The value assigned to trademarks and trade names was estimated using the relief-from-royalty method of the income approach. This approach is based on the assumption that in lieu of ownership, a company would be willing to pay a royalty in order to exploit the related benefits of this intangible asset. In our preliminary estimate of the fair value of Xcerra’s net assets, Cohu identified leases that appear to be at both favorable and unfavorable rates compared to current market rates. As a result, Cohu has recorded both favorable and unfavorable lease assets, which are being amortized to rent expense over the terms of the related lease. As of December 29, 2018, we have completed the analysis of all material lease agreements but are still in the process of gathering market rate data for other lease agreements and, as a result the preliminary net favorable lease asset presented above may change.Unaudited Pro Forma Financial Information The unaudited financial information in the table below summarizes the combined results of operations of Cohu and Xcerra on a pro forma basis, as though the companies had been combined as of January 1, 2017. The pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2017. The pro forma financial information for all periods presented also includes adjustments to, amortization charges for acquired intangible assets, adjustments to interest income, and related tax effects.The pro forma financial information for the twelve months ended December 29, 2018 combines our results and include the results of Xcerra subsequent to October 1, 2018, the date of acquisition. The net sales and net loss attributable to Xcerra consolidated into our financial statements since the date of acquisition was $94.4 million and ($40.0 ) million, respectively. The pro forma financial information for the twelve months ended December 30, 2017, combines our historical results for that period with the historical results of Xcerra for the twelve months ended January 31, 2018. The pro forma financial information for the twelve months ended December 29, 2018, combines our historical results for that period with the historical results of Xcerra for the nine months prior to acquisition.The following table summarizes the unaudited pro forma financial information (in thousands) :
Material nonrecurring adjustments to the pro forma financial information presented above include:
Kita Manufacturing On January 4, 2017, we completed the acquisition of all the outstanding stock of Kita Manufacturing Co., LTD. and Kita USA, Inc. (together “Kita”) (the “Acquisition”). Kita, headquartered in Osaka, Japan, and with operations in Attleboro, Massachusetts and Kyoto, Japan, designs, manufactures and sells spring probe contacts used in final test contactors, probe cards, PCB test boards and connectors sold to customers worldwide. The acquisition of Kita was a strategic transaction to expand our total available market, extend our market leadership and broaden our product offerings. In connection with the Acquisition, during the year ended December 30, 2017 we incurred acquisition related costs, which were expensed to selling, general and administrative, totaling $0.4 million.The Acquisition has been accounted for in conformity with ASC 805. The purchase price for Kita was funded primarily by cash reserves and consisted of the following (in thousands ):
The contingent consideration represents the estimated fair value of future payments totaling up to $3.0 million, which we would be required to make as a result of Kita achieving annual revenue and EBITDA targets in 2017 and 2018 as specified in the purchase agreement for the Acquisition. The fair value of the contingent consideration recognized on the acquisition date and at December 29, 2018, was estimated using the Monte Carlo simulation model. Adjustments to the fair value of contingent consideration are reflected in selling, general, and administrative expense in our consolidated statements of operations. We have classified the contingent consideration payable as level 3 in the fair value hierarchy. See Note 7 “Financial Instruments Measured at Fair Value” for additional information on the three -tier fair value hierarchy.The 2018 revenue and EBITDA targets were achieved and a payment of $1.5 million will be made in early 2019. The fair value of the contingent consideration is recorded in our consolidated balance sheets in both other current accrued liabilities and long term other accrued liabilities.The following table presents the fair value of contingent consideration from the date of acquisition through December 29, 2018 ( in thousands ):
(1) Value recorded on inception of the liability as of the acquisition date.The Acquisition was nontaxable to Cohu and certain of the assets acquired, including goodwill and intangibles, will not be deductible for tax purposes. The acquired assets and liabilities of Kita were recorded at their respective fair values including an amount for goodwill representing the difference between the Acquisition consideration and the fair value of the identifiable net assets and was allocated to our ISG operating segment.The table below summarizes the assets acquired and liabilities assumed as of January 4, 2017 ( in thousands ):
The allocation of the intangible assets subject to amortization is as follows (in thousands) :
Acquired intangible assets reported above are being amortized using the straight-line method over their estimated useful lives. The value assigned to the developed technology was determined by using the multi-period excess earnings method under the income approach. Developed technology, which comprises products that have reached technological feasibility, includes the products in Kita’s product line. The revenue estimates used to value the developed technology were based on estimates of relevant market sizes and growth factors, expected trends in technology and the nature and expected timing of new product introductions by Kita and its competitors. The estimated cash flows were based on revenues for the developed technology net of operating expenses and net of contributory asset charges. The discount rate utilized to discount the net cash flows of the developed technology to present value was based on the risk associated with the respective cash flows taking into consideration the perceived risk of the technology relative to the other acquired assets, the weighted average cost of capital, the internal rate of return, and the weighted average return on assets. The value assigned to customer relationships was determined by using the with and without method under the income approach, which analyzes the difference in discounted cash flows generated with the customer relationships in place compared to the discounted cash flows generated without the customer relationships in place. The value assigned to the covenant not -to-compete was estimated based upon the with and without method of the income approach. Specifically, the present value of the differential of the projected cash flows with and without the covenant in place was measured utilizing the appropriate expected rate of return.The value assigned to backlog acquired was estimated based upon the contractual nature of the backlog as of the acquisition date, using the income approach to discount back to present value the cash flows attributable to the backlog. The value assigned to trade names was estimated using the relief-from-royalty method of the income approach. This approach is based on the assumption that in lieu of ownership, a company would be willing to pay a royalty in order to exploit the related benefits of this intangible asset. |
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Note 3 - Goodwill and Purchased Intangible Assets |
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| Goodwill and Intangible Assets Disclosure [Text Block] |
Changes in the carrying value of our goodwill during the years ended December 29, 2018, and December 30, 2017, were as follows (in thousands ):
Purchased intangible assets, subject to amortization, are as follows (in thousands) :
The table above excludes $36.3 million of in-process technology which has an indefinite life and is subject to impairment or future amortization as developed technology when the projects are completed. Changes in the carrying values of purchased intangible assets presented above are a result of the impact of fluctuation in currency exchange rates.Amortization expense related to purchased intangible assets was approximately $17.2 million in 2018, $4.2 million in 2017 and $6.9 million in 2016. The increase in amortization expense in the current year is the result of amortization of assets acquired in the Xcerra transaction. The decrease in 2017 is a result of certain intangible assets that became fully amortized in 2016. As of December 29, 2018, we expect amortization expense in future periods to be as follows: 2019 - $38.9 million; 2020 - $37.1 million; 2021 - $33.8 million; 2022 - $33.7 million 2023 - $33.4 million; and thereafter $105.8 million. |
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- Definition The entire disclosure for goodwill and intangible assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 4 - Borrowings and Credit Agreements |
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| Debt Disclosure [Text Block] |
The following table is a summary of our borrowings as of December 29, 2018 and December 30, 2017:
The debt principal payments, excluding capital lease obligations, for the next five years and thereafter are as follows:
Credit Agreement On October 1, 2018, we entered into a Credit Agreement providing for a $350.0 million Credit Facility and borrowed the full amount. Loans under the Credit Facility amortize in equal quarterly installments equal to 0.25% of the original principal amount, with the balance payable at maturity. All outstanding principal and interest in respect of the Credit Facility must be repaid on or before October 1, 2025. The loans under the Term Loan Facility bear interest, at Cohu’s option, at a floating annual rate equal to LIBOR plus a margin of 3.00%. At December 29, 2018, the outstanding loan balance, net of discount and deferred financing costs, was $340.6 million and $2.4 million of the outstanding balance is presented as current installments of long-term debt in our consolidated balance sheets. As of December 29, 2018, the fair value of the debt was $336.9 million. The measurement of the fair value of debt is based on the average of the bid and ask trading quotes as of December 29, 2018 and is considered a Level 2 fair value measurement. See Note 2, “Business Acquisitions” for additional information on the Credit Facility.Kita Term Loans As a result of our acquisition of Kita, we assumed term loans from a series of Japanese financial institutions primarily related to the expansion of Kita’s facility in Osaka, Japan. The loans are collateralized by the facility and land, carry interest rates ranging from 0.05% to 0.45%, and expire at various dates through 2034. At December 29, 2018, the outstanding loan balance was $4.6 million and $0.9 million of the outstanding balance is presented as current installments of long-term debt in our consolidated balance sheets. The fair value of the debt approximates the carrying value at December 29, 2018. The term loans are denominated in Japanese Yen and, as a result, amounts disclosed herein will fluctuate because of changes in currency exchange rates. Xcerra Term Loan As a result of our acquisition of Xcerra, we assumed a term loan related to the purchase of Xcerra’s facility in Rosenheim, Germany. The loan is payable over 10 years at an annual interest rate of 2.35%. Principal plus accrued interest is due quarterly over the duration of the term loan. At December 29, 2018, the outstanding loan balance was $1.8 million and $0.3 million of the outstanding balance is presented as current installments of long-term debt in our consolidated balance sheets. The fair value of the debt approximates the carrying value at December 29, 2018. The term loan is denominated in Euros and, as a result, amounts disclosed herein will fluctuate because of changes in currency exchange rates. Lines of Credit As a result of our acquisition of Kita, we assumed a series of revolving credit facilities with various financial institutions in Japan. The credit facilities renew monthly and provide Kita with access to working capital totaling up to $6.2 million. At December 29, 2018, total borrowings outstanding under the revolving lines of credit were $3.1 million. As these credit facility agreements renew monthly, they have been included in short-term borrowings in our consolidated balance sheet.The revolving lines of credit are denominated in Japanese Yen and, as a result, amounts disclosed herein will fluctuate because of changes in currency exchange rates. Our wholly owned Ismeca subsidiary has one available line of credit which provides it with borrowings of up to a total of 2.0 million Swiss Francs. At December 29, 2018, and December 30, 2017, no |
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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 5 - Restructuring Charges |
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| Restructuring and Related Activities Disclosure [Text Block] |
Subsequent to the acquisition of Xcerra on October 1 st , during the fourth quarter of 2018, we began a strategic restructuring program designed to reposition our organization and improve our cost structure as part of our targeted integration plan regarding the recently acquired Xcerra (“Integration Program”). See Note 2, “Business Acquisitions” for additional information regarding the acquisition of Xcerra. As part of the Integration Program we will consolidate our global handler and contactor manufacturing operations and expect to close our manufacturing operations in Penang, Malaysia and Fontana, California by the end of calendar year 2019. Relating to the facility consolidation actions, we notified certain impacted employees of a reduction in force program. The facility consolidation and reduction in force programs are being implemented as part of a comprehensive review of our operations and are intended to streamline and reduce our operating cost structure and capitalize on acquisition synergies.As a result of the activities described above, we recognized total pretax charges of $37.8 million for the year ended December 29, 2018, that are within the scope of ASC 420, Exit or Disposal Cost Obligations (“ASC 420” ). Severance and other separation payments made to certain executive officers of Xcerra related to change-in-control with double trigger provisions in their existing employment agreements totaled $6.9 million in the year ended December 29, 2018 and are included in the employee severance costs below. Additionally we incurred $8.2 million of compensation costs related to the acceleration of RSUs held by certain executive officers and the Board of Directors of Xcerra because of the change in control. This non-cash expense is included in restructuring in our consolidated statements of operations.All costs of the Integration Program were, and are expected to be, incurred by our Semiconductor Test & Inspection segment. Charges related to the Integration Program for the year ended December 29, 2018, were as follows (in thousands) :
Costs associated with restructuring activities are presented in our consolidated statements of operations as restructuring charges, except for certain costs associated with inventory charges related to the decision to end manufacturing of certain of Xcerra’s semiconductor test handler products, which are classified within cost of sales. Other restructuring costs include expenses for professional fees associated with employee severance and impairments of fixed assets. The following table summarizes the activity within the restructuring related accounts for the Integration Program during the year ended December 29, 2018 (in thousands) :
At December 29, 2018, our total accrual for restructuring related items is reflected within current liabilities of our consolidated balance sheets as these amounts are expected to be paid out in 2019. The estimated costs associated with the employee severance and facility consolidation actions will be paid predominantly in cash, with the exception of the amortization of leasehold improvements which is non-cash. All amounts accrued related to inventory will remain in our consolidated balance sheet until it is scrapped. |
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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 6 - Employee Benefit Plans |
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| Notes to Financial Statements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disclosure of Compensation Related Costs, Share-based Payments [Text Block] |
Defined Contribution Retirement Plans – Cohu and Xcerra each maintain defined contribution 401 (k) retirement savings plans covering all their respective salaried and hourly U.S. employees. Participation is voluntary and participants’ contributions are based on their eligible compensation. Participants in the Cohu plan receive matching contributions of 50% up to 8% of salary contributed and participants in the Xcerra plan receive matching contributions of 50% up to 6% of salary contributed, both subject to various statutory limits. In 2018 we made matching contributions to the plan of $1.1 million which includes matching contributions to the Xcerra 401 (k) plan from October 1 through December 29, 2018. In both 2017 and 2016 we made contributions to the plan of $0.6 million.Defined Benefit Retirement Plans – As a result of the acquisition of Ismeca effective December 31, 2012, we took over the Ismeca Europe Semiconductor BVG Pension Plan in Switzerland (“the Swiss Plan”) and the following discussion only relates to the Swiss Plan.Net periodic benefit cost of the Swiss Plan was as follows:
The following table sets forth the projected benefit obligation, the fair value of plan assets, the funded status and the liability we have recorded in our consolidated balance sheet related to the Swiss Plan:
At December 29, 2018 and December 30, 2017, the Swiss Plan’s net liability is included in noncurrent accrued retirement benefits. Amounts recognized in accumulated other comprehensive income net of tax related to the Swiss Plan consisted of an unrecognized net actuarial loss totaling $2.7 million at December 29, 2018, and $3.1 million at December 30, 2017. Weighted-average actuarial assumptions used to determine the projected benefit obligation under the Swiss Plan are as follows:
Weighted-average assumptions used to determine net periodic benefit cost of the Swiss Plan are as follows:
During 2019 employer and employee contributions to the Swiss Plan are expected to total $0.8 million. Estimated benefit payments are expected to be as follows: 2019 - $0.7 million; 2020 - $0.9 million; 2021 - $1.0 million; 2022 - $0.8 million; 2023 - $1.3 million; and $5.9 million thereafter through 2028. As is customary with Swiss pension plans, the assets of the plan are invested in a collective fund with multiple employers. We have no investment authority over the assets of the plan that are held and invested by a Swiss insurance company. Investment holdings are made with respect to Swiss laws and target allocations for plan assets are 67% debt securities and cash, 16% real estate investments, 8% alternative investments and 9% equity securities. The valuation of the collective fund assets as a whole is a Level 3 measurement; however the individual investments of the fund are generally Level 1 (equity securities), Level 2 (fixed income) and Level 3 (real estate and alternative) investments. We determine the fair value of the plan assets based on information provided by the collective fund, through review of the collective fund’s annual financial statements. See Note 7, “Financial Instruments Measured at Fair Value” for additional information on the three -tier fair value hierarchy.We maintain other defined benefit plans for employees located outside the U.S. for which the majority of the obligations and net periodic benefit cost were determined to be immaterial for all periods presented. Retiree Medical Benefits – We provide post-retirement health benefits to certain executives and directors under a noncontributory plan. The net periodic benefit cost was $0.1 million in 2018, 2017, and 2016. We fund benefits as costs are incurred and as a result there are no plan assets.The weighted average discount rate used in determining the accumulated post-retirement benefit obligation was 4.1% in 2018, 3.4% in 2017 and 3.9% in 2016. The annual rates of increase of the cost of health benefits was assumed to be 8.8% in 2019. This rate was then assumed to decrease 0.6% per year to 4.4% in 2027 and remain level thereafter. A one percent increase (decrease) in health care cost trend rates would increase (decrease) the 2018 net periodic benefit cost by approximately $14,000 ($12,000 ) and the accumulated post-retirement benefit obligation as of December 29, 2018, by approximately $349,000 ($298,000 ).Contributions to the post-retirement health benefit plan are expected to total $0.1 million in 2019. Estimated benefit payments are expected to be as follows: 2019 - $0.1 million; 2020 - $0.1 million; 2021 - $0.1 million; 2022 - $0.2 million; 2023 - $0.2 million and $0.9 million thereafter through 2027. The following table sets forth the post-retirement benefit obligation, funded status and the liability we have recorded in our consolidated balance sheets:
Deferred Compensation – The Cohu, Inc. Deferred Compensation Plan allows certain of our officers to defer a portion of their current compensation. We have purchased life insurance policies on the participants with Cohu as the named beneficiary. Participant contributions, distributions and investment earnings and losses are accumulated in a separate account for each participant. At December 29, 2018, the payroll liability to participants, included in accrued compensation and benefits in the consolidated balance sheet, was approximately $2.0 million and the cash surrender value of the related life insurance policies included in other current assets was approximately $1.6 million. At December 30, 2017, the liability totaled $2.3 million and the corresponding assets were $2.2 million.Employee Stock Purchase Plan – The Cohu, Inc. 1997 Employee Stock Purchase Plan (“the Plan”) provides for the issuance of a maximum of 2,650,000 shares of our common stock. Under the Plan, eligible employees may purchase shares of common stock through payroll deductions. The price paid for the common stock is equal to 85% of the fair market value of our common stock on specified dates. During the last three years we issued shares under the Plan as follows: 2018 - 84,678; 2017 - 99,144 and 2016 - 110,579. At December 29, 2018, there were 598,610 shares reserved for issuance under the Plan.Stock Options – At December 29, 2018, a total of 1,198,058 shares were available for future equity grants under the Cohu, Inc. 2005 Equity Incentive Plan (“the 2005 Plan”). Under the 2005 Plan stock options may be granted to employees, consultants and outside directors to purchase a fixed number of shares of our common stock at prices not less than 100% of the fair market value at the date of grant. Options generally vest and become exercisable after one year or in four annual increments beginning one year after the grant date and expire ten years from the grant date. We have historically issued new shares of Cohu common stock upon share option exercise.During 2018, 2017 and 2016 no stock options were granted and the activity under our share-based compensation plans was as follows:
The aggregate intrinsic value of options exercised was $0.9 million in 2018, $10.1 million in 2017, and $0.5 million in 2016. At December 29, 2018, the aggregate intrinsic value of options outstanding, vested and expected to vest and exercisable was $2.3 million.Information about stock options outstanding at December 29, 2018 is as follows (options in thousands) :
Restricted Stock Units – Under our equity incentive plans, restricted stock units may be granted to employees, consultants and outside directors. Restricted stock units vest over a one -year, two -year or a four -year period from the date of grant. Prior to vesting, restricted stock units do not have dividend equivalent rights, do not have voting rights and the shares underlying the restricted stock units are not considered issued and outstanding. New shares of our common stock will be issued on the date the restricted stock units vest net of the statutory tax withholding requirements to be paid by us on behalf of our employees. As a result, the actual number of shares issued will be fewer than the actual number of RSUs outstanding at December 29, 2018. Restricted stock unit activity under our share-based compensation plans was as follows:
RSUs granted in 2018 in the table above include the issuance of 529,995 assumed RSUs to Xcerra employees, based on a conversion formula.Equity-Based Performance Stock Units –The number of shares of common stock that will ultimately be issued to settle PSUs granted over the last four years is as follows:
PSUs granted in 2018, 2017 and 2016 vest 100% on the third anniversary of their grant and PSUs granted in 2015 vested 50% on the second and third anniversary of their grant, respectively.We estimated the fair value of the PSUs using a Monte Carlo simulation model on the date of grant. Compensation expense is recognized over the derived service period. New shares of our common stock will be issued on the date the PSUs vest net of the minimum statutory tax withholding requirements to be paid by us on behalf of our employees. As a result, the actual number of shares issued will be fewer than the actual number of PSUs outstanding at December 29, 2018. PSU activity under our share-based compensation plans was as follows:
Share-based Compensation – We estimate the fair value of each share-based award on the grant date using the Black-Scholes and the Monte Carlo simulation valuation models. Option valuation models require the input of highly subjective assumptions and changes in the assumptions used can materially affect the grant date fair value of an award. These assumptions for the Black-Scholes model include the risk-free rate of interest, expected dividend yield, expected volatility, and the expected life of the award. The risk-free rate of interest is based on the U.S. Treasury rates appropriate for the expected term of the award as of the grant date. Expected dividends are based primarily on historical factors related to our common stock. Expected volatility is based on historic weekly stock price observations of our common stock during the period immediately preceding the share-based award grant that is equal in length to the award’s expected term. We believe that historical volatility is the best estimate of future volatility. Expected life of the award is based on historical option exercise data. The Monte Carlo simulation model incorporates assumptions for the risk-free interest rate, Cohu and the selected peer group price volatility, the correlation between Cohu and the selected index, and dividend yields. Share-based compensation expense related to restricted stock unit awards is calculated based on the market price of our common stock on the date of grant, reduced by the present value of dividends expected to be paid on our common stock prior to vesting of the restricted stock unit.The following weighted average assumptions were used to value share-based awards granted:
Reported share-based compensation is classified in the Consolidated Financial Statements as follows:
Share based compensation presented above for the year ended December 29, 2018, excludes $8.2 million of compensation recorded related to the acceleration of RSU awards held by certain executive officers and the Board of Directors of Xcerra because of the change in control. This non-cash expense has been included in restructuring in our consolidated statements of operations.We adopted ASU 2016 -09 in the fourth quarter of 2016, which among other items, provides an accounting policy election to account for forfeitures as they occur, rather than based on an estimate of expected forfeitures. We elected to account for forfeitures as they occur and therefore, share-based compensation expense for the years ended December 29, 2018, December 30, 2017, and December 31, 2016, have been calculated based on actual forfeitures in our consolidated statement of operations, rather than our previous approach where the expense was net of estimated forfeitures determined at the grant date. The net cumulative effect of this change was recognized as a $0.2 million increase to paid-in capital and a decrease to retained earnings as of December 26, 2015. At December 29, 2018, we had approximately $21.2 million of pre-tax unrecognized compensation cost related to unvested restricted stock units and performance stock units which is expected to be recognized over a weighted-average period of approximately 2.4 years. |
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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 7 - Financial Instruments Measured at Fair Value |
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| Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] |
Our cash, cash equivalents, and short-term investments consisted primarily of cash and other investment grade securities. We do not hold investment securities for trading purposes. All short-term investments are classified as available-for-sale and recorded at fair value. Investment securities are exposed to market risk due to changes in interest rates and credit risk and we monitor credit risk and attempt to mitigate exposure by making high-quality investments and through investment diversification.Gains and losses on investments are calculated using the specific-identification method and are recognized during the period in which the investment is sold or when an investment experiences an other-than-temporary decline in value. Factors that could indicate an impairment exists include, but are not limited to: earnings performance, changes in credit rating or adverse changes in the regulatory or economic environment of the asset. Gross realized gains and losses on sales of short-term investments are included in interest income. Realized gains and losses for the periods presented were not significant.Investments that we have classified as short-term, by security type, are as follows (in thousands) :
Effective maturities of short-term investments at December 29, 2018, were as follows:
Accounting standards pertaining to fair value measurements establish a three -tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. When available, we use quoted market prices to determine the fair value of our investments, and they are included in Level 1. When quoted market prices are unobservable, we use quotes from independent pricing vendors based on recent trading activity and other relevant information.The following table summarizes, by major security type, our financial instruments that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in thousands) :
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- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 8 - Income Taxes |
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| Income Tax Disclosure [Text Block] |
Significant components of the provision (benefit) for income taxes for continuing operations are as follows:
Income (loss) before income taxes from continuing operations consisted of the following:
The Tax Act was enacted on December 22, 2017, and introduces significant changes to U.S. income tax law. Effective in 2018, the Tax Act reduced the U.S. statutory tax rate from 35% to 21% and creates new taxes on certain foreign-sourced earnings and related-party payments, which are referred to as the global intangible low-taxed income ("GILTI") tax and the base erosion and anti-abuse tax, respectively. In addition, in 2017 we were subject to a one -time transition tax on accumulated foreign subsidiary earnings not previously subject to U.S. income tax. The Tax Act also repealed the alternative minimum tax (AMT) effective January 1, 2018, and made changes to net operating loss provisions, expensing of certain assets and capitalization of research and development expense with such changes effective for 2018 and later years.Due to the timing of the enactment and the complexity involved in applying the provisions of the Tax Act, the Company made reasonable estimates of the effects and recorded provisional amounts in our financial statements as of December 30, 2017 and for the first nine months of 2018 by applying the guidance in SAB 118 because we had not completed our accounting for these effects. During 2018, the Company completed the accounting for these effects. Except as described below under "One-time transition tax", due to the valuation allowance against our deferred tax assets, there was no net change made in 2018 to our 2017 enactment-date provisional income tax.Under GAAP, we are allowed to make an accounting policy election to either (i) treat taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred or (ii) factor such amounts into a company’s measurement of its deferred taxes. We have elected to account for GILTI as a period cost. One-time transition tax The Tax Act requires us to pay U.S. income taxes on accumulated foreign subsidiary earnings not previously subject to U.S. income tax at a rate of 15.5% to the extent of foreign cash and certain other net current assets and 8% on the remaining earnings. Foreign tax credits and net operating losses may be used to reduce this tax which is referred to as a transition or deemed repatriation tax.In 2017 we recorded a provisional amount for our one -time transition tax liability of $16.6 million and used foreign tax credits and net operating losses to fully offset this liability. In 2018 the IRS and U.S. Treasury issued Notice 2018 -29 that addresses certain aspects of the calculation of the transition tax (“Notice 2018 -29” ). Application of Notice 2018 -29 resulted in an increase to our transition tax liability of approximately $5.1 million that was fully offset by net operating losses resulting in no net increase to income tax expense.Deferred tax effects The Tax Act reduces the U.S. statutory tax rate from 35% to 21% for years after 2017. Accordingly, we remeasured our deferred taxes as of December 30, 2017 to reflect the reduced rate that will apply in future periods when these deferred taxes are settled or realized. We recognized a deferred tax benefit of $4.0 million, net of a reduction in the related valuation allowance, to reflect the reduced U.S. tax rate and other effects of the Tax Act including the change in the life of NOL carryforwards from 20 years to indefinite.Beginning in 2018, the Tax Act provides a 100% deduction for dividends received from 10 -percent owned foreign corporations by U.S. corporate shareholders, subject to a one -year holding period. Although dividend income is now exempt from U.S. federal tax in the hands of U.S. corporate shareholders, companies must still apply the guidance of ASC 740 -30 -25 -18 to account for the tax consequences of outside basis differences and other tax impacts of their investments in non-U.S. subsidiaries.Except for working capital requirements in certain foreign jurisdictions, we provide for all taxes, including withholding and other residual taxes, related to unremitted earnings of our foreign subsidiaries. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting and tax purposes. Significant components of our deferred tax assets and liabilities were as follows:
Companies are required to assess whether a valuation allowance should be recorded against their deferred tax assets (“DTAs”) based on the consideration of all available evidence, using a “more likely than not” realization standard. The four sources of taxable income that must be considered in determining whether DTAs will be realized are, (1 ) future reversals of existing taxable temporary differences (i.e. offset of gross deferred tax assets against gross deferred tax liabilities); (2 ) taxable income in prior carryback years, if carryback is permitted under the tax law; (3 ) tax planning strategies and (4 ) future taxable income exclusive of reversing temporary differences and carryforwards.In assessing whether a valuation allowance is required, significant weight is to be given to evidence that can be objectively verified. We have evaluated our DTAs each reporting period, including an assessment of our cumulative income or loss over the prior three -year period and future periods, to determine if a valuation allowance was required. A significant negative factor in our assessment was Cohu's three -year cumulative U.S. loss history at the end of various fiscal periods including 2018. As a result of our cumulative, three -year U.S. GAAP pretax loss from continuing operations at the end of 2018 we were unable to conclude at December 29, 2018, that it was “more likely than not” that our U.S. DTAs would be realized. We will evaluate the realizability of our DTAs at the end of each quarterly reporting period in 2019 and should circumstances change it is possible the remaining valuation allowance, or a portion thereof, will be reversed in a future period.Our valuation allowance on our DTAs at December 29, 2018, and December 30, 2017, was approximately $84.7 million and $31.5 million, respectively. The remaining gross DTAs for which a valuation allowance was not recorded are realizable primarily through future reversals of existing taxable temporary differences. As the realization of DTAs is determined by tax jurisdiction, the deferred tax liabilities recorded by our non U.S. subsidiaries were not a source of taxable income in assessing the realization of our DTAs in the U.S.The reconciliation of income tax computed at the U.S. federal statutory tax rate to the provision for income taxes for continuing operations is as follows:
At December 29, 2018, including carryforwards from the Xcerra acquisition as described below, we had federal, state and foreign net operating loss carryforwards of approximately $244.2 million, $147.6 million and $12.7 million, respectively, that expire in various tax years beginning in 2019 through 2038 or have no expiration date. We also have federal and state tax credit carryforwards at December 29, 2018 of approximately $13.5 million and $53.5 million, respectively, certain of which expire in various tax years beginning in 2019 through 2038 or have no expiration date. The federal and state loss and credit carryforwards are subject to annual limitations under Sections 382 and 383 of the Internal Revenue Code and applicable state tax law. We believe the state tax credit is not likely to be realized in the foreseeable future.The Company has completed a Section 382 and 383 analysis of the Internal Revenue Code and applicable state law, regarding the limitation of its net operating loss and business tax credit carryforwards as of December 29, 2018. As a result of the analysis, the Company concluded that the acquisition of Xcerra on October 1, 2018, triggered a limitation in the utilization of Xcerra’s net operating loss and research credit carryforwards. The Company has reduced its deferred tax assets related to the Xcerra U.S. net operating loss and credit carryforwards that are anticipated to expire unused as a result of ownership changes. These tax attributes have been excluded from deferred tax assets with a corresponding reduction of the valuation allowance with no net effect on the income tax provision or effective tax rate. The Company will continue to assess the realizability of these carryforwards in subsequent periods. Future changes in the ownership of Cohu could further limit the utilization of these carryforwards.We have certain tax holidays with respect to our operations in Malaysia and the Philippines. These holidays require compliance with certain conditions and expire at various dates through 2027. The impact of these holidays was an increase in net income of approximately $2.4 million or $0.08 per share in 2018, $2.8 million, or $0.10 per share, in 2017 and $1.0 million, or $0.04 per share, in fiscal 2016. A reconciliation of our gross unrecognized tax benefits, excluding accrued interest and penalties, is as follows:
If the unrecognized tax benefits at December 29, 2018 are ultimately recognized, excluding the impact of U.S. tax benefits netted against deferred taxes that are subject to a valuation allowance, approximately $8.2 million ($4.3 million at December 30, 2017) would result in a reduction in our income tax expense and effective tax rate. It is reasonably possible that our gross unrecognized tax benefits as of December 29, 2018, could decrease in 2019 by approximately $2.7 million as a result of the expiration of certain statutes of limitations.We recognize interest and penalties related to unrecognized tax benefits in income tax expense. Cohu had approximately $1.5 million and $1.1 million accrued for the payment of interest and penalties at December 29, 2018, and December 30, 2017, respectively. Interest expense, net of accrued interest reversed, was $0.6 million in 2018, $(0.3 ) million in 2017 and not significant in 2016. Our U.S. federal and state income tax returns for years after 2014 and 2013, respectively, remain open to examination, subject to the statute of limitations. Net operating loss and credit carryforwards arising prior to these years are also open to examination if and when utilized. The statute of limitations for the assessment and collection of income taxes related to our foreign tax returns varies by country. In the foreign countries where we have significant operations these time periods generally range from four to ten years after the year for which the tax return is due or the tax is assessed. Our German subsidiaries income tax returns for 2012 to 2016 are currently under routine examination by tax authorities in Germany. |
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- References No definition available.
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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 9 - Segment and Geographic Information |
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| Segment Reporting Disclosure [Text Block] |
We applied the provisions of ASC Topic 280, Segment Reporting , (“ASC 280” ), which sets forth a management approach to segment reporting and establishes requirements to report selected segment information quarterly and to report annually entity-wide disclosures about products, major customers and the geographies in which the entity holds material assets and reports revenue. An operating segment is defined as a component that engages in business activities whose operating results are reviewed by the chief operating decision maker and for which discrete financial information is available. After the acquisition of Xcerra on October 1, 2018, we have determined that our four identified operating segments are: Test Handler Group (THG), Semiconductor Tester Group (STG), Interface Solutions Group (ISG) and PCB Test Group (PTG). Our THG, STG and ISG operating segments qualify for aggregation under ASC 280 due to similarities in their customers, their economic characteristics, and the nature of products and services provided. As a result, we report in two segments, Semiconductor Test & Inspection and PCB Test. The summary below presents our current segments, Semiconductor Test & Inspection and PCB Test, for the year ended December 29, 2018. Prior to the acquisition of Xcerra on October 1, 2018, historical amounts of Cohu’s semiconductor equipment segment would have been reported in our Semiconductor Test & Inspection segment and have been presented accordingly.
During the last three years, the following customers of our Semiconductor Test & Inspection segment that comprised 10% or greater of our consolidated net sales were as follows:
No customer of our PCB Test segment exceeded 10% of consolidated net sales for the year ended December 29, 2018. Net sales to customers, attributed to countries based on product shipment destination, were as follows:
Geographic location of our property, plant and equipment and other long-lived assets was as follows:
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- References No definition available.
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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 10 - Commitments and Contingencies |
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| Contingencies Disclosure [Text Block] |
We lease certain of our facilities and equipment under non-cancelable operating leases. Rental expense was $4.8 million in 2018, $3.6 million in 2017, and $4.4 million in 2016. The increase in rent expense in 2018 was a result of the acquisition of Xcerra on October 1, 2018. Future minimum lease payments at December 29, 2018 are as follows:
From time-to-time we are involved in various legal proceedings, examinations by various tax authorities and claims that have arisen in the ordinary course of our business. The outcome of any litigation is inherently uncertain. While there can be no assurance, at the present time we do not believe that the resolution of the matters described above will have a material adverse effect on our assets, financial position or results of operations. |
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- References No definition available.
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- Definition The entire disclosure for loss and gain contingencies. Describes any existing condition, situation, or set of circumstances involving uncertainty as of the balance sheet date (or prior to issuance of the financial statements) as to a probable or reasonably possible loss incurred by an entity that will ultimately be resolved when one or more future events occur or fail to occur, and typically discloses the amount of loss recorded or a range of possible loss, or an assertion that no reasonable estimate can be made. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 11 - Guarantees |
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| Commitments Contingencies and Guarantees [Text Block] |
Accrued Warranty Changes in accrued warranty during the three -year period ended December 29, 2018, was as follows:
Accrued warranty amounts expected to be incurred after one year are included in noncurrent other accrued liabilities in the consolidated balance sheet. These amounts totaled $0.2 million and $0.6 million at December 29, 2018 and December 30, 2017, respectively. |
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- Definition The entire disclosure for commitments, contingencies, and guarantees. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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Note 12 - Discontinued Operations |
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| Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] |
In 2015, we sold all of the outstanding stock of Broadcast Microwave Services, Inc. (“BMS”) for $4.9 million in cash and up to $2.5 million of contingent cash consideration. Our decision to sell this non-core business resulted from management’s determination that they were no longer a strategic fit within our organization. As part of the divestiture of BMS we recorded a contingent consideration receivable that was classified as Level 3 in the fair value hierarchy. See Note 7, “Financial Instruments Measured at Fair Value” for additional information on the three -tier fair value hierarchy. The contingent consideration represented the estimated fair value of future payments we were due based on BMS achieving annual revenue targets in 2016 and 2017 as specified in the sale agreement. We determined the value of the contingent consideration using a Monte Carlo simulation model with changes to the fair value of the contingent consideration being recognized in discontinued operations. During 2017, BMS failed to meet the necessary revenue targets and the contingent consideration receivable was written-off. Loss from sale of BMS amounts below represent changes in the fair value of the contingent consideration receivable.On October 1, 2018, we acquired a fixtures services business as part of Xcerra. In the fourth quarter of 2018, our management determined that this business did not align with our core business and was not a strategic fit within our organization. As a result, the fixtures services business has been marketed for sale since we acquired Xcerra on October 1, 2018. We expect to complete the sale of this business within 12 months and it qualifies to be reported as discontinued operations. For financial statement purposes, the results of operations for this business have been segregated from those of continuing operations and are presented in our consolidated financial statements as discontinued operations.Balance sheet information for our fixtures services business presented as discontinued operations is summarized as follows (in thousands) :
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- References No definition available.
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- Definition The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 13 - Accumulated Other Comprehensive Loss |
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| Comprehensive Income (Loss) Note [Text Block] |
Components of other comprehensive loss, on an after-tax basis, were as follows:
Components of accumulated other comprehensive loss, net of tax, at the end of each period are as follows:
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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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Note 14 - Related Party Transactions |
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| Notes to Financial Statements | |||
| Related Party Transactions Disclosure [Text Block] |
At December 29, 2018 certain of our cash and short-term investments were held and managed by BlackRock, Inc. which owns 14.6% of our outstanding common stock as reported in its Form 13 -G filing made with the Securities and Exchange Commission on January 24, 2019. As part of Xcerra, we gained ownership interests in two companies that supply components and provide services to wholly owned subsidiaries of Xcerra. Multitest eS GmbH and ATG-LM GmbH of FTZ Fraes-und Technologiezentrum GmbH Frasdorf (“FTZ”) and ETZ Elektrisches Testzentrum fuer Leiterplatten GmbH (“ETZ”), respectively. FTZ, based in Germany, provides milling services and ETZ, which is also based in Germany, provides certain component parts. These investments are accounted for under the equity method and are not material to our consolidated balance sheets. During 2018, purchases of products from FTZ and ETZ were not material. |
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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 15 - Quarterly Financial Data (Unaudited) |
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| Quarterly Financial Information [Text Block] |
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- References No definition available.
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Schedule II - Valuation and Qualifying Accounts |
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| SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] |
85 |
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- Definition The entire disclosure for valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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Significant Accounting Policies (Policies) |
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| Accounting Policies [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Basis of Accounting, Policy [Policy Text Block] | Basis of Presentation – Cohu, Inc. (“Cohu”, “we”, “our”, “us” and the “Company”), through our wholly owned subsidiaries, is a provider of semiconductor test equipment and services. Our Consolidated Financial Statements include the accounts of Cohu and our wholly owned subsidiaries and variable interest entities (“VIEs”) for which we are the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation. We evaluate the need to consolidate affiliates based on standards set forth in ASC Topic 810, Consolidation (“ASC 810” ).The consolidated financial statements include the accounts of Cohu and a variable interest entity (“VIE”) that was acquired as part of our acquisition of Xcerra Corporation (“Xcerra”) and in which we have determined we are the primary beneficiary. The non-controlling interest in ALBS Solutions Sdn Bhd (“ALBS”) represents the 80% equity interest that is not held by Cohu. ALBS is a privately held corporation which provides high-tech semiconductor automation systems to different industrial users. All significant consolidated transactions and balances have been eliminated in consolidation.The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. Our fiscal years are based on a 52 - or 53 -week period ending on the last Saturday in December. Our current fiscal year, which ended on December 29, 2018, consisted of 52 weeks. Our fiscal years ended on December 30, 2017, and December 31, 2016, consisted of 52 weeks and 53 weeks, respectively. |
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| Consolidation, Variable Interest Entity, Policy [Policy Text Block] | Principles of Consolidation for Variable Interest Entities – We follow ASC Topic 810 -10 -15 guidance with respect to accounting for VIEs. These entities do not have sufficient equity at risk to finance their activities without additional subordinated financial support from other parties or whose equity investors lack any of the characteristics of a controlling financial interest. A variable interest is an investment or other interest that will absorb portions of a VIE’s expected losses or receive portions of its expected residual returns and are contractual, ownership, or pecuniary in nature and that change with changes in the fair value of the entity’s net assets. A reporting entity is the primary beneficiary of a VIE and must consolidate it when that party has a variable interest, or combination of variable interests, that provides it with a controlling financial interest. A party is deemed to have a controlling financial interest if it meets both of the power and losses/benefits criteria. The power criterion is the ability to direct the activities of the VIE that most significantly impact its economic performance. The losses/benefits criterion is the obligation to absorb losses from, or right to receive benefits from, the VIE that could potentially be significant to the VIE. The VIE model requires an ongoing reconsideration of whether a reporting entity is the primary beneficiary of a VIE due to changes in facts and circumstances.As of December 29, 2018 and December 30, 2017, we consolidated one and zero VIEs, respectively.Cohu is the primary beneficiary of ALBS which qualifies as a VIE that meets the definition of a business. As such, the assets, liabilities, and noncontrolling interest of ALBS were measured at fair value in accordance with ASC 805. The assets and liabilities and revenues and expenses of this VIE are included in the financial statements of ALBS and are further included in the consolidated financial statements. As of December 29, 2018, the assets and liabilities of ALBS set are immaterial to Cohu and, therefore, not shown separately on our Consolidated Balance Sheets. The owner’s equity and net loss of ALBS are considered attributable to non-controlling interest. |
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| Reclassification, Policy [Policy Text Block] | Reclassifications – In conjunction with the acquisition of Xcerra the Company assessed the need to realign its financial statement presentation and certain income statement classifications were adjusted with prior periods reclassified to conform with current period presentation. The changes made were as follows:
A summary of the reclassifications described above and the impact on our Consolidated Statements of Operations is as follows:
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| Discontinued Operations, Policy [Policy Text Block] | Discontinued Operations – Management has determined that the fixtures services business, that was acquired as part of Xcerra, does not align with Cohu’s long-term strategic plan and management is in the process of divesting this portion of the business. As a result, the assets of our fixtures business are considered “held for sale” and the operations of our fixtures business are considered “discontinued operations” as of December 29, 2018. See Note 12, “Discontinued Operations” for additional information. Unless otherwise indicated, all amounts herein relate to continuing operations. |
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| Earnings Per Share, Policy [Policy Text Block] | Income (Loss ) Per Share – Basic income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period. Diluted income (loss) per share includes the dilutive effect of common shares potentially issuable upon the exercise of stock options, vesting of outstanding restricted stock and performance stock units and issuance of stock under our employee stock purchase plan using the treasury stock method. In loss periods, potentially dilutive securities are excluded from the per share computations due to their anti-dilutive effect. For purposes of computing diluted income (loss) per share, stock options with exercise prices that exceed the average fair market value of our common stock for the period are excluded. For the years ended December 30, 2017 and December 31, 2016, approximately 77,000 and 697,000 shares of our common stock were excluded from the computation, respectively.The following table reconciles the denominators used in computing basic and diluted income (loss) per share:
Cohu has utilized the “control number” concept in the computation of diluted earnings per share to determine whether potential common stock instruments are dilutive. The control number used is income from continuing operations. The control number concept requires that the same number of potentially dilutive securities applied in computing diluted earnings per share from continuing operations be applied to all other categories of income or loss, regardless of their anti-dilutive effect on such categories. |
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| Cash and Cash Equivalents, Policy [Policy Text Block] | Cash, Cash Equivalents and Short-term Investments – Highly liquid investments with insignificant interest rate risk and original maturities of three months or less are classified as cash and cash equivalents. Investments with maturities greater than three months are classified as short-term investments. All of our short-term investments are classified as available-for-sale and are reported at fair value, with any unrealized gains and losses, net of tax, recorded in the statement of comprehensive income (loss). We manage our cash equivalents and short-term investments as a single portfolio of highly marketable securities. We have the ability and intent, if necessary, to liquidate any of our investments in order to meet the liquidity needs of our current operations during the next 12 months. Accordingly, investments with contractual maturities greater than one year have been classified as current assets in the accompanying consolidated balance sheets. |
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| Fair Value Measurement, Policy [Policy Text Block] | Fair Value of Financial Instruments – The carrying amounts of our financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued expenses, approximate fair value due to the short maturities of these financial instruments. |
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| Concentration Risk, Credit Risk, Policy [Policy Text Block] | Concentration of Credit Risk – Financial instruments that potentially subject us to significant credit risk consist principally of cash equivalents, short-term investments and trade accounts receivable. We invest in a variety of financial instruments and, by policy, limit the amount of credit exposure with any one issuer.Trade accounts receivable are presented net of allowance for doubtful accounts of $0.3 million at December 29, 2018, and $0.2 million at December 30, 2017. Our customers primarily include semiconductor manufacturers and semiconductor test subcontractors located throughout many areas of the world. While we believe that our allowance for doubtful accounts is adequate and represents our best estimate of potential loss exposure at December 29, 2018, we will continue to monitor customer liquidity and other economic conditions, which may result in changes to our estimates regarding collectability. |
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| Inventory, Policy [Policy Text Block] | Inventories – Inventories are stated at the lower of cost, determined on a first -in, first -out basis, or net realizable value. Cost includes labor, material and overhead costs. Determining market value of inventories involves numerous estimates and judgments including projecting average selling prices and sales volumes for future periods and costs to complete and dispose of inventory. As a result of these analyses, we record a charge to cost of sales in advance of the period when the inventory is sold when estimated market values are below our costs. Charges to cost of sales for excess and obsolete inventories totaled $10.8 million in 2018. Included in this amount is $9.4 million of inventory charges related to the decision to end manufacturing of certain of Xcerra’s semiconductor test handler products. In 2017 and 2016 we recorded charges of $1.1 million in both periods.Inventories by category were as follows (in thousands) :
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| Property, Plant and Equipment, Policy [Policy Text Block] | Property, Plant and Equipment – Depreciation and amortization of property, plant and equipment, both owned and under capital lease, is calculated principally on the straight-line method based on estimated useful lives of thirty to forty years for buildings, five to fifteen years for building improvements, three to ten years for machinery, equipment and software and the lease life for capital leases. Land is not depreciated.Property, plant and equipment, at cost, consisted of the following (in thousands) :
Depreciation expense was $8.8 million in 2018, $5.0 million in 2017 and $3.5 million in 2016. |
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| Segment Reporting, Policy [Policy Text Block] | Segment Information – We applied the provisions of ASC Topic 280, Segment Reporting, (“ASC 280” ), which sets forth a management approach to segment reporting and establishes requirements to report selected segment information quarterly and to report annually entity-wide disclosures about products, major customers and the geographies in which the entity holds material assets and reports revenue. An operating segment is defined as a component that engages in business activities whose operating results are reviewed by the chief operating decision maker and for which discrete financial information is available. Subsequent to the acquisition of Xcerra on October 1, 2018, we have determined that our four identified operating segments are: Test Handler Group (THG), Semiconductor Tester Group (STG), Interface Solutions Group (ISG) and PCB Test Group (PTG). Our THG, STG and ISG operating segments qualify for aggregation under ASC 280 due to similarities in their customers, their economic characteristics, and the nature of products and services provided. As a result, we report in two segments, Semiconductor Test and Inspection Equipment (“Semiconductor Test & Inspection”) and PCB Test Equipment (“PCB Test”). |
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| Goodwill and Intangible Assets, Policy [Policy Text Block] | Goodwill, Purchased Intangible Assets and Other Long-lived Assets – We evaluate goodwill for impairment annually and when an event occurs or circumstances change that indicate that the carrying value may not be recoverable. We test goodwill for impairment by first comparing the book value of net assets to the fair value of the reporting units. If the fair value is determined to be less than the book value, a second step is performed to compute the amount of impairment as the difference between the estimated fair value of goodwill and the carrying value. We estimated the fair values of our reporting units primarily using the income approach valuation methodology that includes the discounted cash flow method, taking into consideration the market approach and certain market multiples as a validation of the values derived using the discounted cash flow methodology. Forecasts of future cash flows are based on our best estimate of future net sales and operating expenses, based primarily on customer forecasts, industry trade organization data and general economic conditions.We conduct our annual impairment test as of October 1st of each year, and determined there was no impairment as of October 1, 2018 as we determined that the estimated fair values of our reporting units exceeded their carrying values on that date. Other events and changes in circumstances may also require goodwill to be tested for impairment between annual measurement dates. As of December 29, 2018, we do not believe there have been any events or circumstances that would require us to perform an interim goodwill impairment review. In the event we determine that an interim goodwill impairment review is required, in a future period, the review may result in an impairment charge, which would have a negative impact on our results of operations.Long-lived assets, other than goodwill, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets might not be recoverable. Conditions that would necessitate an impairment assessment include a significant decline in the observable market value of an asset, a significant change in the extent or manner in which an asset is used, or any other significant adverse change that would indicate that the carrying amount of an asset or group of assets may not be recoverable. For long-lived assets, impairment losses are only recorded if the asset’s carrying amount is not recoverable through its undiscounted, probability-weighted future cash flows. We measure the impairment loss based on the difference between the carrying amount and estimated fair value. |
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| Standard Product Warranty, Policy [Policy Text Block] | Product Warranty – Product warranty costs are accrued in the period sales are recognized. Our products are generally sold with standard warranty periods, which differ by product, ranging from 12 - to 36 -months. Parts and labor are typically covered under the terms of the warranty agreement. Our warranty expense accruals are based on historical and estimated costs by product and configuration. From time-to-time we offer customers extended warranties beyond the standard warranty period. In those situations the revenue relating to the extended warranty is deferred at its estimated fair value and recognized on a straight-line basis over the contract period. Costs associated with our extended warranty contracts are expensed as incurred. |
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| Income Tax, Policy [Policy Text Block] | Income Taxes – We assess our income tax positions and record tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances and information available at the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, we have recorded the largest amount of tax benefit with a greater than 50 percent likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements. Where applicable, associated interest and penalties have also been recognized and recorded, net of federal and state tax benefits, in income tax expense.The U.S. Tax Cuts and Jobs Act (“Tax Act”) was enacted on December 22, 2017. The accounting for the tax effects of the enactment of the Tax Act was completed in 2018. |
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| Commitments and Contingencies, Policy [Policy Text Block] | Contingencies and Litigation – We assess the probability of adverse judgments in connection with current and threatened litigation. We would accrue the cost of an adverse judgment if, in our estimation, the adverse outcome is probable and we can reasonably estimate the ultimate cost. |
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| Adoption of New Accounting Standard [Policy Text Block] | Adoption of New Revenue Accounting Standard – We adopted ASC Topic 606, Revenue from Contracts with Customers (“ASC , on 606” ) December 31, 2017, the first day of our 2018 fiscal year. We elected to implement the new standard using the modified retrospective method of adoption which only applies to those contracts which were not completed as of December 31, 2017. Revenue for the year ended December 29, 2018, has been accounted for using ASC 606 and the prior years ended December 30, 2017, December 31, 2016, have not been adjusted. Upon adoption of ASC 606, we recorded a cumulative-effect adjustment to retained earnings of $1.1 million on December 31, 2017, which represents the impact of ASC 606 on our deferred revenue.Material changes recorded in connection with the cumulative-effect adjustment were as follows (in thousands) :
The adoption of ASC 606 had no impact to cash used in net operating, investing or financing activities in our consolidated statements of cash flows. The following table presents the amounts by which financial statement line items included in our consolidated statements of operations for the year ended December 29, 2018 and our consolidated balance sheet at December 29, 2018 were materially affected due to the adoption of ASC 606 (in thousands) :
Under ASC 606 our revenue will continue to be recognized at a point in time when the performance obligation has been satisfied and transfer of control has occurred, typically, this occurs upon shipment of products to our customers. In certain instances, when customer payment terms provide that a minority portion of the equipment purchase price be paid only upon customer acceptance, recognition of revenue may occur sooner under ASC 606. |
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| Revenue Recognition, Policy [Policy Text Block] | Revenue Recognition – Our net sales are derived from the sale of products and services and are adjusted for estimated returns and allowances, which historically have been insignificant. We recognize revenue when the obligations under the terms of a contract with our customers are satisfied; generally, this occurs with the transfer of control of our systems, non-system products or services. In circumstances where control is not transferred until destination or acceptance, we defer revenue recognition until such events occur.Revenue for established products that have previously satisfied a customer’s acceptance requirements is generally recognized upon shipment. In cases where a prior history of customer acceptance cannot be demonstrated or from sales where customer payment dates are not determinable and in the case of new products, revenue and cost of sales are deferred until customer acceptance has been received. Our post-shipment obligations typically include installation and standard warranties. The estimated fair value of installation related revenue is recognized in the period the installation is performed. Service revenue is recognized over time as we transfer control to our customer for the related contract or upon completion of the services if they are short-term in nature. Spares, contactor and kit revenue is generally recognized upon shipment.Certain of our equipment sales have multiple performance obligations. These arrangements involve the delivery or performance of multiple performance obligations, and transfer of control of performance obligations may occur at different points in time or over different periods of time. For arrangements containing multiple performance obligations, the revenue relating to the undelivered performance obligation is deferred using the relative standalone selling price method utilizing estimated sales prices until satisfaction of the deferred performance obligation.Unsatisfied performance obligations primarily represent contracts for products with future delivery dates. We have $19.1 million of revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisified) as of December 29, 2018. Revenue recorded during the year ended December 29, 2018, included $6.6 million of revenue that was deferrred as of December 30, 2017. We generally sell our equipment with a product warranty. The product warranty provides assurance to customers that delivered products are as specified in the contract (an “assurance-type warranty”). Therefore, we account for such product warranties under ASC 460, Guarantees (“ASC , and 460” )not as a separate performance obligation.The transaction price reflects our expectations about the consideration we will be entitled to receive from the customer and may include fixed or variable amounts. Fixed consideration primarily includes sales to customers that are known as of the end of the reporting period. Variable consideration includes sales in which the amount of consideration that we will receive is unknown as of the end of a reporting period. Such consideration primarily includes sales made to certain customers with cumulative tier volume discounts offered. Variable consideration arrangements are rare; however, when they occur, we estimate variable consideration as the expected value to which we expect to be entitled. Included in the transaction price estimate are amounts in which it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Variable consideration that does not meet revenue recognition criteria is deferred. Our contracts are typically less than one year in duration and we have elected to use the practical expedient available in ASC 606 to expense cost to obtain contracts as they are incurred because they would be amortized over less than one year.Accounts receivable represents our unconditional right to receive consideration from our customers. Payments terms do not exceed one year from the invoice date and therefore do not include a significant financing component. To date, there have been no material impairment losses on accounts receivable. There were no material contract assets or contract liabilities recorded on the consolidated balance sheet in any of the periods presented.On shipments where sales are not recognized, gross profit is generally recorded as deferred profit in our consolidated balance sheet representing the difference between the receivable recorded and the inventory shipped. In certain instances where customer payments are received prior to product shipment, the customer’s payments are recorded as customer advances. At December 29, 2018, we had deferred revenue totaling approximately $10.8 million, current deferred profit of $6.9 million and deferred profit expected to be recognized after one year included in noncurrent other accrued liabilities of $2.0 million. At December 30, 2017, we had deferred revenue totaling approximately $10.4 million, current deferred profit of $6.6 million and deferred profit expected to be recognized after one year included in noncurrent other accrued liabilities of $0.8 million. Our balances at December 29, 2018, include a $1.1 million beginning retained earnings adjustment as a result of our adoption of ASC 606 on the first day of fiscal 2018. The periodic change is primarily a result of increases and decreases in deferrals of revenue associated with product shipments made to our customers in accordance with our revenue recognition policy. In addition, we acquired $1.5 million in deferred profit as part of our acquisition of Xcerra on October 1, 2018. Net sales by type and segment are as follows (in thousands) :
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| Advertising Costs, Policy [Policy Text Block] | Advertising Costs – Advertising costs are expensed as incurred and were not material for all periods presented. |
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| Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block] | Restructuring Costs –one -time termination benefits in accordance with ASC Topic 420 (“ASC 420” ), Exit or Disposal Cost Obligations. The timing of recognition for severance costs accounted for under ASC 420 depends on whether employees are required to render service until they are terminated in order to receive the termination benefits. If employees are required to render service until they are terminated in order to receive the termination benefits, a liability is recognized ratably over the future service period. Otherwise, a liability is recognized when management has committed to a restructuring plan and has communicated those actions to employees. Employee termination benefits covered by existing benefit arrangements are recorded in accordance with ASC Topic 712, Nonretirement Postemployment Benefits. These costs are recognized when management has committed to a restructuring plan and the severance costs are probable and estimable. |
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| Debt, Policy [Policy Text Block] | Debt Issuance Costs – We capitalize costs related to the issuance of debt. Debt issuance costs directly related to our Term Loam B are presented within noncurrent liabilities as a reduction of long-term debt in our consolidated balance sheets. The amortization of such costs is recognized as interest expense using the effective interest method over the term of the respective debt issue. Amortization related to deferred debt issuance costs and original discount costs was $0.3 million for the year ended December 29, 2018. |
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| Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] | Share-based Compensation – We measure and recognize all share-based compensation under the fair value method. Our estimate of share-based compensation expense requires a number of complex and subjective assumptions including our stock price volatility, employee exercise patterns (expected life of the options) and related tax effects. The assumptions used in calculating the fair value of share-based awards represent our best estimates, but these estimates involve inherent uncertainties and the application of management judgment. Although we believe the assumptions and estimates we have made are reasonable and appropriate, changes in assumptions could materially impact our reported financial results. |
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| Foreign Currency Transactions and Translations Policy [Policy Text Block] | Foreign Remeasurement and Currency Translation – Assets and liabilities of our wholly owned foreign subsidiaries that use the U.S. Dollar as their functional currency are re-measured using exchange rates in effect at the end of the period, except for nonmonetary assets, such as inventories and property, plant and equipment, which are re-measured using historical exchange rates. Revenues and costs are re-measured using average exchange rates for the period, except for costs related to those balance sheet items that are re-measured using historical exchange rates. Gains and losses on foreign currency transactions are recognized as incurred. During the years ended December 29, 2018 and December 31, 2016, we recognized foreign exchange gains totaling $1.7 million and $2.6 million, respectively, that are included in our consolidated statement of operations. During the year ended December 30, 2017, we recognized approximately $3.0 million of foreign exchange losses.Certain of our foreign subsidiaries have designated the local currency as their functional currency and, as a result, their assets and liabilities are translated at the rate of exchange at the balance sheet date, while revenue and expenses are translated using the average exchange rate for the period. Cumulative translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity. |
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| Comprehensive Income, Policy [Policy Text Block] | Accumulated Other Comprehensive Loss $25.9 million at December 29, 2018, and $17.8 million at December 30, 2017, and was attributed to, net of income taxes where applicable: foreign currency adjustments resulting from the translation of certain accounts into U.S. Dollars, unrealized losses and gains on investments and adjustments to accumulated postretirement benefit obligations. The U.S. Dollar strengthened relative to certain foreign currencies in countries where we have operations as of December 29, 2018, compared to December 30, 2017. Consequently, our accumulated other comprehensive loss increased by $8.9 million as a result of foreign currency translation during 2018. In the previous year, weakening of the U.S. Dollar led to a decrease in our accumulated other comprehensive loss of $11.3 million. Additional information related to accumulated other comprehensive loss, on an after-tax basis is included in Note 13. |
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| New Accounting Pronouncements, Policy [Policy Text Block] | Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements – In August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018 -15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic , which amends ASU 350 -40 )No. 2015 -05, Customers Accounting for Fees in a Cloud Computing Agreement , to help entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement (hosting arrangement) by providing guidance for determining when the arrangement includes a software license. The most significant change will align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. Accordingly, the amendments in ASU 2018 -15 require an entity in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350 -40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments in ASU 2018 -15 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, although early adoption is permitted, including adoption in any interim period and the amendments can be applied either retrospectively or prospectively. Cohu adopted ASU 2018 -15 in the third quarter of 2018 prospectively for all implementation costs incurred related to our global cloud computing systems and capitalized $2.9 million as of December 29, 2018. These amounts are recorded as other current ($0.3 million) and non-current ($2.6 million) assets in our consolidated balance sheet.In March 2017, the FASB issued ASU No. 2017 -07, Compensation – Retirement Benefits (Topic , which provides additional guidance on the presentation of net periodic pension and postretirement benefit costs in the income statement and on the components eligible for capitalization. The amendments in this guidance require that an employer report the service cost component of the net periodic benefit costs in the same income statement line item as other compensation costs arising from services rendered by employees during the period. The non-service-cost components of net periodic benefit costs are to be presented in the income statement separately from the service cost components and outside a subtotal of income from operations. The guidance also allows for the capitalization of the service cost components, when applicable (i.e., as a cost of internally manufactured inventory or a self-constructed asset). The guidance is effective for annual periods beginning after 715 ) – Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost December 15, 2017, including interim periods within those annual periods. The amendments in this guidance are to be applied retrospectively. The adoption of ASU 2017 -07 did not have a material impact on our consolidated financial statements.In January 2017, the FASB issued ASU No. 2017 -01, Clarifying the Definition of a Business . It revises the definition of a business and provides a framework to evaluate when an input and a substantive process are present in an acquisition to be considered a business combination. This guidance is effective for annual periods beginning after December 15, 2017. The adoption of ASU 2017 -01 did not have a material impact on our financial statements.In November 2016, the FASB issued ASU No. 2016 -18, Restricted Cash . It requires that amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017. The adoption of ASU 2016 -18 did not have a material impact on our consolidated financial statements.In October 2016, the FASB issued ASU 2016 -16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory . ASU 2016 -16 changes the timing of income tax recognition for an intercompany sale of assets excluding inventory. ASU 2016 -16 requires the seller’s tax effects and the buyer’s deferred taxes to be recognized immediately upon the sale instead of deferring accounting for the income tax implications until the assets are sold to a third party or recovered through use. ASU 2016 -16 is effective for fiscal years beginning after December 15, 2017 including interim periods within the year of adoption. The adoption of ASU 2016 -16 did not have a material impact on our consolidated financial statements.In August 2016, the FASB issued ASU No. 2016 -15, Classification of Certain Cash Receipts and Cash Payments . It provides guidance on eight specific cash flow issues with the objective of reducing the existing diversity in practice in how they are classified in the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted, provided that all of the amendments are adopted in the same period. The adoption of ASU 2016 -15 did not have a material impact on our consolidated financial statements.Recently Issued Accounting Pronouncements August 2018, the FASB issued ASU 2018 -14, Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans , which improves defined benefit disclosure requirements by removing disclosures that are not cost beneficial, clarifying disclosures’ specific requirements and adding relevant disclosure requirements. This ASU is effective for fiscal years ending after December 15, 2020 and early adoption is permitted. The amendments in this ASU are required to be applied on a retrospective basis to all periods presented. We are currently assessing and have not yet determined the impact that the adoption of ASU 2018 -14 will have on the consolidated financial statements.In August 2018, the FASB issued ASU 2018 -13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which improves fair value disclosure requirements by removing disclosures that are not cost beneficial, clarifying disclosures’ specific requirements and adding relevant disclosure requirements. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted and an entity can choose to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. We are currently assessing and have not yet determined the impact that the adoption of ASU 2018 -13 will have on the consolidated financial statements.In June 2018, the FASB issued ASU No. 2018 -07, Improvements to Nonemployee Share-Based Payment Accounting (ASU . ASU 2018 -07 )2018 -07 simplifies the accounting for share-based payments to nonemployees by aligning it with the accounting for share-based payments to employees, with certain exceptions. Consistent with the accounting requirement for employee share-based payment awards, nonemployee share-based payment awards are measured at grant-date fair value of the equity instruments that an entity is obligated to issue when the good has been delivered, or the service has been rendered, and any other conditions necessary to earn the right to benefit from the instruments have been satisfied. The accounting standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Historically we have not issued share-based awards to nonemployees, so the adoption of ASU 2018 -13 should not have any impact on our consolidated financial statements.In February 2018, the FASB issued ASU 2018 -02, Income Statement-Reporting Comprehensive Income , to give companies the option to reclassify the income tax effects on items within accumulated other comprehensive income resulting from U.S. tax reform to retained earnings. ASU 2018 -02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those years. Early adoption is permitted. We are currently assessing and have not yet determined the impact ASU 2018 -02 may have on our consolidated financial statements.In January 2017, the FASB issued ASU No. 2017 -04, Simplifying the Test for Goodwill Impairment . It eliminates Step 2 from the goodwill impairment test and requires an entity to recognize an impairment charge for the amount by which the carrying amount of goodwill exceeds the reporting unit's fair value, not to exceed the carrying amount of goodwill. This guidance is effective for annual and any interim impairment tests in fiscal years beginning after December 15, 2019. We do not expect this guidance to have any impact on our consolidated financial statements.In February 2016, the FASB issued ASU 2016 -02, Leases (Topic . This ASU requires lessees to record a right of use (“ROU”) asset and a liability for virtually all leases This guidance is effective for interim and annual reporting periods beginning after 842 ) December 15, 2018. In July 2018, the FASB issued ASU 2018 -10, Codification Improvements to Topic , Leases. ASU 842 2018 -10 includes certain clarifications to address potential narrow-scope implementation issues. Additionally, in July 2018, the FASB issued ASU 2018 -11, Targeted Improvements to Topic . ASU 842, Leases2018 -11 provides an additional optional transition method to adopt ASU 2016 -02. The two permitted transition methods are the modified retrospective approach, which applies the new lease requirements at the beginning of the earliest period presented, and the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The new lease standard will be effective for us in the first quarter of 2019. We will adopt the new standard effective December 30, 2018, which is the first day of our 2019 fiscal year.We plan to adopt the new standard using the optional transition method and to elect the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows us to carryforward the historical lease classification. We will make an accounting policy election to not record ROU assets and lease liabilities for leases with an initial term of 12 months or less. We will recognize those lease payments in the consolidated statements of operations on a straight-line basis over the lease term. We will also make an accounting policy election to use the practical expedient allowed in the standard to not separate lease and non-lease components when calculating the lease liability under ASU 2016 -02. Related to adoption of the new standard, we have implemented internal controls and a lease accounting technology system to track the ROU asset and lease liability balances and prepare the related footnote disclosures.As discussed throughout this document we completed the acquisition of Xcerra on October 1, 2018. Prior to being acquired by Cohu, Xcerra’s fiscal year ended on July 31st and Topic 842 would have been effective for it beginning on August 1, 2019. Due to the timing of the acquisition and Xcerra’s state of preparedness in light of the change in effective date of the standard we are still in the process of completing our analysis of the impact this guidance will have on our consolidated financial statements and on our disclosures. We have determined that most of our leases fall into one of four categories: real estate, machinery, office equipment, and vehicles. Real estate agreements represent a majority of our rent expense and vary based on various factors negotiated by the landlord; machinery agreements are related to the use of factory machinery; and office equipment and vehicle leases typically utilize standard master leasing contracts that have similar terms. We currently expect the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the company is the lessee. |
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- Definition Disclosure of accounting policy for the adoption of new accounting standards. No definition available.
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- References No definition available.
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- Definition Disclosure of accounting policy for advertising costs. For those costs that cannot be capitalized, discloses whether such costs are expensed as incurred or the first period in which the advertising takes place. For direct response advertising costs that are capitalized, describes those assets and the accounting policy used, including a description of the qualifying activity, the types of costs capitalized and the related amortization period. An entity also may disclose its accounting policy for cooperative advertising arrangements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). No definition available.
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| X | ||||||||||
- Definition Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for commitments and contingencies, which may include policies for recognizing and measuring loss and gain contingencies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for comprehensive income. No definition available.
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| X | ||||||||||
- Definition Disclosure of accounting policy for credit risk. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for consolidation to describe the significant judgments and assumptions made in determining whether a variable interest held by the entity requires the variable interest entity to be consolidated and (or) disclose information about its involvement with the variable interest entity; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; and the significant factors considered and judgments made in determining that the power to direct the activities that significantly impact the economic performance of the variable interest entity are shared (as defined). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Disclosure of accounting policy for recognizing and reporting costs associated with exiting, disposing of, and restructuring certain operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy related to debt. Includes, but is not limited to, debt issuance costs, the effects of refinancings, method of amortizing debt issuance costs and original issue discount, and classifications of debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for discontinued operations. Includes, but is not limited to, method of interest allocation to a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities. No definition available.
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| X | ||||||||||
- Definition Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. No definition available.
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| X | ||||||||||
- Definition Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Disclosure of accounting policy for segment reporting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Disclosure of accounting policy for stock option and stock incentive plans. This disclosure may include (1) the types of stock option or incentive plans sponsored by the entity (2) the groups that participate in (or are covered by) each plan (3) significant plan provisions and (4) how stock compensation is measured, and the methodologies and significant assumptions used to determine that measurement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Disclosure of accounting policy for standard warranties including the methodology for measuring the liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 1 - Summary of Significant Accounting Policies (Tables) |
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| Notes Tables | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reclassification of Amounts on Income Statement [Table Text Block] |
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| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
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| Schedule of Inventory, Current [Table Text Block] |
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| Property, Plant and Equipment [Table Text Block] |
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| Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] |
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| Disaggregation of Revenue [Table Text Block] |
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- Definition Tabular disclosure of reclassification of amount on the Income Statement No definition available.
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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Note 2 - Business Acquisitions (Tables) |
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| Business Acquisition, Pro Forma Information [Table Text Block] |
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| Schedule of Business Acquisitions, by Acquisition [Table Text Block] |
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| Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block] |
(1) Value recorded on inception of the liability as of the acquisition date. |
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| Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |
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| Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] |
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| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |
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| Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] |
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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Tabular disclosure of contingent payment arrangements including the terms that will result in payment and the accounting treatment that will be followed if such contingencies occur, including the potential impact on earnings per share if contingencies are to be settled in common stock of the entity. The description also may include the period over which amounts are expected to be paid, and changes in the amount since the previous reporting period. This also includes contingent options and commitments. No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of finite-lived intangible assets acquired as part of a business combination or through an asset purchase, by major class and in total, including the value of the asset acquired, any significant residual value (the expected value of the asset at the end of its useful life) and the weighted-average amortization period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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Note 3 - Goodwill and Purchased Intangible Assets (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Goodwill [Table Text Block] |
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| Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite or indefinite life, by either major class or business segment. No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
|
Note 4 - Borrowings and Credit Agreements (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Debt [Table Text Block] |
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| Schedule of Maturities of Long-term Debt [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. No definition available.
|
| X | ||||||||||
- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 5 - Restructuring Charges (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Restructuring and Related Costs [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 6 - Employee Benefit Plans (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Net Benefit Costs [Table Text Block] |
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| Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] |
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| Schedule of Assumptions Used [Table Text Block] |
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| Schedule of Net Funded Status [Table Text Block] |
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| Share-based Compensation, Stock Options, Activity [Table Text Block] |
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| Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
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| Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] |
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| Schedule of Share-based Compensation, Equity-based Performance Stock Units [Table Text Block] | <div style="display: inline; font-family: times new roman; font-size: 10pt"><table border="0" cellpadding="0" cellspacing="0" style="; text-indent: 0px; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-right: 20%; margin-left: 36pt; min-; min-width: 700px;"> <tr style="vertical-align: bottom;"> <td style="width: 30%; text-align: center; border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;">Year Granted</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td colspan="3" style="width: 151%; text-align: center; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;">Range of Awards</td> <td style="width: 1%; padding-bottom: 1px;"> </td> <td style="width: 1%;"> </td> <td colspan="1" style="width: 34%; text-align: center; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;">Performance Criteria Period (years)</td> <td style="width: 1%; padding-bottom: 1px;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="width: 30%; text-align: center;">2018</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 15%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">25%</div></td> <td style="width: 1%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">-</div></td> <td style="width: 15%;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">200%</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> <td style="width: 1%;"> </td> <td style="width: 34%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">3</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="width: 30%; text-align: center;">2017</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 15%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">25%</div></td> <td style="width: 1%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">-</div></td> <td style="width: 15%;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">200%</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> <td style="width: 1%;"> </td> <td style="width: 34%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">3</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="width: 30%; text-align: center;">2016</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 15%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">25%</div></td> <td style="width: 1%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">-</div></td> <td style="width: 15%;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">200%</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> <td style="width: 1%;"> </td> <td style="width: 34%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">3</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="width: 30%; text-align: center;">2015</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 15%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">25%</div></td> <td style="width: 1%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">-</div></td> <td style="width: 15%;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">200%</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> <td style="width: 1%;"> </td> <td style="width: 34%; text-align: center;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">2</div></td> <td nowrap="nowrap" style="width: 1%; margin-left: 0pt;"> </td> </tr> </table></div> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Nonvested Performance-based Units Activity [Table Text Block] |
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| Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] |
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| Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of equity-based performance stock units. No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of the change in the benefit obligation, fair value of plan assets, and funded status of pension plans or other employee benefit plans. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of net funded status of pension plans and/or other employee benefit plans. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
|
Note 7 - Financial Instruments Measured at Fair Value (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Available-for-sale Securities [Table Text Block] |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
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| Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. No definition available.
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| X | ||||||||||
- References No definition available.
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Note 8 - Income Taxes (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
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| Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
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| Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
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| Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
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| Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of income before income tax between domestic and foreign jurisdictions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the change in unrecognized tax benefits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 9 - Segment and Geographic Information (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Segment Reporting Information, by Segment [Table Text Block] |
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| Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] |
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| Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
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| Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of the names of foreign countries in which material long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets are located, and amount of such long-lived assets located in that country or foreign geographic area. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 10 - Commitments and Contingencies (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Lessee, Operating Lease, Disclosure [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 11 - Guarantees (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Product Warranty Liability [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 12 - Discontinued Operations (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Broadcast Microwave Services, Inc. (“BMS”) [Member] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disposal Groups, Including Discontinued Operations [Table Text Block] |
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| Xcerra [Member] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disposal Groups, Including Discontinued Operations [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
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| X | ||||||||||
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Note 13 - Accumulated Other Comprehensive Loss (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
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| Condensed Statement of Comprehensive Income [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of condensed statement of comprehensive income (loss) including, but not limited to, statements of comprehensive income (loss) of consolidated entities and consolidation eliminations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 15 - Quarterly Financial Data (Unaudited) (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Quarterly Financial Information [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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Schedule II - Valuation and Qualifying Accounts (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 29, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Valuation and Qualifying Accounts Disclosure [Table Text Block] |
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| X | ||||||||||
- Definition The tabular disclosure of valuation and qualifying accounts and reserves. No definition available.
|
| X | ||||||||||
- References No definition available.
|
Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
|
Oct. 01, 2018
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 30, 2017
USD ($)
shares
|
Dec. 31, 2016
USD ($)
shares
|
Dec. 31, 2017
USD ($)
|
|
| Number of VIEs Consolidated | 1 | 1 | 1 | 1 | 0 | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares | 77,000 | 697,000 | ||||||
| Allowance for Doubtful Accounts Receivable, Current, Ending Balance | $ 300 | $ 300 | $ 300 | $ 300 | $ 200 | |||
| SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense | 10,800 | 1,100 | $ 1,100 | |||||
| Inventory Write-down | 9,400 | |||||||
| Depreciation, Total | $ 8,850 | 4,987 | 3,509 | |||||
| Number of Operating Segments | 4 | 4 | ||||||
| Number of Reportable Segments | 2 | 2 | 2 | |||||
| Goodwill and Intangible Asset Impairment, Total | $ 0 | |||||||
| Contract with Customer, Liability, Total | $ 0 | 0 | $ 0 | $ 0 | 0 | 0 | ||
| Contract with Customer, Liability, Current | 10,800 | 10,800 | 10,800 | 10,800 | 10,400 | |||
| Deferred Profit | 6,896 | 6,896 | 6,896 | 6,896 | 6,608 | $ 5,350 | ||
| Deferred Profit Recognized After Year One | 2,000 | 2,000 | 2,000 | 2,000 | ||||
| Amortization of Debt Issuance Costs | 300 | |||||||
| Foreign Currency Transaction Gain (Loss), Realized | 1,700 | (3,000) | 2,600 | |||||
| Accumulated Other Comprehensive Income (Loss), Net of Tax, Total | (25,880) | (25,880) | (25,880) | (25,880) | (17,787) | |||
| Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax | (8,900) | 11,300 | ||||||
| Capitalized Computer Software, Net, Ending Balance | 2,900 | 2,900 | 2,900 | 2,900 | ||||
| Contract with Customer, Asset, Net, Total | 0 | 0 | 0 | 0 | 0 | $ 0 | ||
| Non-current Other Accrued Liabilities [Member] | ||||||||
| Deferred Profit Recognized After Year One | $ 800 | |||||||
| Other Current Assets [Member] | ||||||||
| Capitalized Computer Software, Net, Ending Balance | 300 | 300 | 300 | 300 | ||||
| Other Noncurrent Assets [Member] | ||||||||
| Capitalized Computer Software, Net, Ending Balance | 2,600 | 2,600 | 2,600 | 2,600 | ||||
| Accounting Standards Update 2014-09 [Member] | ||||||||
| Deferred Profit | (1,258) | |||||||
| Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member] | ||||||||
| Cumulative Effect of New Accounting Principle in Period of Adoption | $ 1,100 | |||||||
| Xcerra [Member] | ||||||||
| Inventory Write-down | 19,100 | |||||||
| Capital Leased Assets, Gross, Total | 2,700 | 2,700 | 2,700 | $ 2,700 | ||||
| Contract with Customer, Liability, Current | $ 1,500 | |||||||
| Minimum [Member] | ||||||||
| Standard Product Warranty Term | 1 year | |||||||
| Maximum [Member] | ||||||||
| Standard Product Warranty Term | 3 years | |||||||
| Building [Member] | Minimum [Member] | ||||||||
| Property, Plant and Equipment, Useful Life | 30 years | |||||||
| Building [Member] | Maximum [Member] | ||||||||
| Property, Plant and Equipment, Useful Life | 40 years | |||||||
| Building Improvements [Member] | Minimum [Member] | ||||||||
| Property, Plant and Equipment, Useful Life | 5 years | |||||||
| Building Improvements [Member] | Maximum [Member] | ||||||||
| Property, Plant and Equipment, Useful Life | 15 years | |||||||
| Machinery, Equipment and Software [Member] | Minimum [Member] | ||||||||
| Property, Plant and Equipment, Useful Life | 3 years | |||||||
| Machinery, Equipment and Software [Member] | Maximum [Member] | ||||||||
| Property, Plant and Equipment, Useful Life | 10 years | |||||||
| ALBS [Member] | ||||||||
| Variable Interest Entity, Consolidated, Assets, Pledged, Total | $ 0 | $ 0 | $ 0 | $ 0 | ||||
| X | ||||||||||
- Definition The carrying value of deferred revenue, net of expenses, as of the balance sheet date that is expected to be recognized as such within one year or the normal operating cycle, if longer. No definition available.
|
| X | ||||||||||
- Definition The carrying value of deferred revenue, net of expenses, as of the balance sheet date which is expected to be taken into income after one year or beyond the normal operating cycle, if longer. No definition available.
|
| X | ||||||||||
- Definition Represents the number of variable interest entities consolidated as of the balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Describes the term of the product warranty. No definition available.
|
| X | ||||||||||
- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of amortization expense attributable to debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. No definition available.
|
| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. No definition available.
|
| X | ||||||||||
- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. No definition available.
|
| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
|
| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
|
| X | ||||||||||
- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of consolidated variable interest entity's (VIE) assets that can only be used to settle obligations of VIE. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
|
Note 1 - Summary of Significant Accounting Policies - Reclassification (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
[1],[2],[3] | Sep. 29, 2018 |
[1],[2],[3] | Jun. 30, 2018 |
[1],[2],[3] | Mar. 31, 2018 |
[1],[2],[3] | Dec. 30, 2017 |
[1],[2],[3] | Sep. 30, 2017 |
[1],[2] | Jul. 01, 2017 |
[1],[2] | Apr. 01, 2017 |
[1],[2] | Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
||||||||||||
| Cost of Sales | $ 128,718 | $ 51,142 | $ 57,677 | $ 54,923 | $ 48,993 | $ 56,065 | $ 56,166 | $ 48,073 | $ 292,460 | [1],[2],[3],[4] | $ 209,297 | [2],[4] | $ 182,086 | [4] | ||||||||||||||||
| SG&A Expense | $ 96,754 | 60,737 | 55,212 | |||||||||||||||||||||||||||
| Previously Reported [Member] | ||||||||||||||||||||||||||||||
| Cost of Sales | 211,986 | 187,256 | ||||||||||||||||||||||||||||
| SG&A Expense | 65,233 | 54,322 | ||||||||||||||||||||||||||||
| Restatement Adjustment [Member] | Amortization of Purchased Intangibles [Member] | ||||||||||||||||||||||||||||||
| Cost of Sales | (2,689) | (5,170) | ||||||||||||||||||||||||||||
| SG&A Expense | (1,519) | (1,732) | ||||||||||||||||||||||||||||
| Restatement Adjustment [Member] | Foreign Transaction Gains and (Losses) [Member] | ||||||||||||||||||||||||||||||
| Cost of Sales | ||||||||||||||||||||||||||||||
| SG&A Expense | $ (2,977) | $ 2,622 | ||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||
| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 1 - Summary of Significant Accounting Policies - Computation of Basic and Diluted Income (Loss) Per Share (Details) - shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Weighted average common shares outstanding (in shares) | 31,776 | 27,836 | 26,659 |
| Effect of dilutive stock options and restricted stock units (in shares) | 1,080 | 821 | |
| (in shares) | 31,776 | 28,916 | 27,480 |
| X | ||||||||||
- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 1 - Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| Raw materials and purchased parts | $ 60,112 | $ 27,918 |
| Work in process | 57,953 | 25,130 |
| Finished goods | 21,249 | 9,037 |
| Total inventories | $ 139,314 | $ 62,085 |
| X | ||||||||||
- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
||
|---|---|---|---|---|
| Property, plant and equipment | $ 113,961 | $ 67,129 | ||
| Less accumulated depreciation and amortization | (39,629) | (32,957) | ||
| Property, plant and equipment, net | 74,332 | 34,172 | ||
| Land and Land Improvements [Member] | ||||
| Property, plant and equipment | 11,905 | 8,017 | ||
| Building and Building Improvements [Member] | ||||
| Property, plant and equipment | [1] | 37,265 | 13,779 | |
| Machinery and Equipment [Member] | ||||
| Property, plant and equipment | $ 64,791 | $ 45,333 | ||
| ||||
| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 1 - Summary of Significant Accounting Policies - Cumulative-effect Adjustments (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
Sep. 29, 2018 |
[2] | Jun. 30, 2018 |
[2] | Mar. 31, 2018 |
[2] | Dec. 30, 2017 |
Sep. 30, 2017 |
[2] | Jul. 01, 2017 |
[2] | Apr. 01, 2017 |
[2] | Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
Dec. 31, 2017 |
||||||||||||||
| Deferred profit | $ 6,896 | $ 6,608 | $ 6,896 | $ 6,608 | $ 5,350 | ||||||||||||||||||||||||||
| Income taxes payable | 11,055 | 2,159 | 11,055 | 2,159 | 2,360 | ||||||||||||||||||||||||||
| Retained earnings | 111,670 | [1] | 150,726 | 111,670 | [1] | 150,726 | 151,783 | ||||||||||||||||||||||||
| Net sales | 170,637 | [2],[3] | $ 86,164 | [3] | $ 99,817 | [3] | $ 95,150 | [3] | 84,090 | [2],[3] | $ 93,651 | $ 93,866 | $ 81,097 | 451,768 | [2],[3] | 352,704 | $ 282,084 | ||||||||||||||
| Income tax provision | 631 | 2,244 | 2,747 | ||||||||||||||||||||||||||||
| Net loss | $ (56,997) | [2],[3] | $ 4,803 | $ 11,648 | $ 8,122 | $ 6,895 | [2],[3] | $ 8,755 | $ 10,430 | $ 6,763 | $ (32,424) | $ 32,843 | $ 3,039 | ||||||||||||||||||
| Basic: (in dollars per share) | $ (1.40) | [2],[4] | $ 0.17 | [4] | $ 0.40 | [4] | $ 0.28 | [4] | $ 0.24 | [2],[3],[4] | $ 0.31 | [4] | $ 0.38 | [4] | $ 0.25 | [4] | $ (1.01) | [4] | $ 1.18 | [4] | $ 0.11 | ||||||||||
| Diluted: (in dollars per share) | $ (1.40) | [2],[3],[4] | $ 0.16 | [4] | $ 0.39 | [4] | $ 0.28 | [4] | $ 0.23 | [2],[3],[4] | $ 0.30 | [4] | $ 0.36 | [4] | $ 0.24 | [4] | $ (1.01) | [4] | $ 1.14 | [4] | $ 0.11 | ||||||||||
| Calculated under Revenue Guidance in Effect before Topic 606 [Member] | |||||||||||||||||||||||||||||||
| Deferred profit | $ 11,125 | $ 11,125 | |||||||||||||||||||||||||||||
| Retained earnings | [1] | 108,181 | 108,181 | ||||||||||||||||||||||||||||
| Net sales | 448,797 | ||||||||||||||||||||||||||||||
| Income tax provision | 92 | ||||||||||||||||||||||||||||||
| Net loss | $ (34,856) | ||||||||||||||||||||||||||||||
| Basic: (in dollars per share) | $ (1.10) | ||||||||||||||||||||||||||||||
| Diluted: (in dollars per share) | $ (1.10) | ||||||||||||||||||||||||||||||
| Accounting Standards Update 2014-09 [Member] | |||||||||||||||||||||||||||||||
| Deferred profit | (1,258) | ||||||||||||||||||||||||||||||
| Income taxes payable | 201 | ||||||||||||||||||||||||||||||
| Retained earnings | $ 1,057 | ||||||||||||||||||||||||||||||
| Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | |||||||||||||||||||||||||||||||
| Deferred profit | (4,229) | $ (4,229) | |||||||||||||||||||||||||||||
| Retained earnings | [1] | $ 3,489 | 3,489 | ||||||||||||||||||||||||||||
| Net sales | 2,971 | ||||||||||||||||||||||||||||||
| Income tax provision | 539 | ||||||||||||||||||||||||||||||
| Net loss | $ 2,432 | ||||||||||||||||||||||||||||||
| Basic: (in dollars per share) | $ 0.08 | ||||||||||||||||||||||||||||||
| Diluted: (in dollars per share) | $ 0.08 | ||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||
| X | ||||||||||
- Definition The carrying value of deferred revenue, net of expenses, as of the balance sheet date that is expected to be recognized as such within one year or the normal operating cycle, if longer. No definition available.
|
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
[1],[2] | Sep. 29, 2018 |
[1],[2] | Jun. 30, 2018 |
[1],[2] | Mar. 31, 2018 |
[1],[2] | Dec. 30, 2017 |
[1],[2] | Sep. 30, 2017 |
[1] | Jul. 01, 2017 |
[1] | Apr. 01, 2017 |
[1] | Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
||||||
| Net sales | $ 170,637 | $ 86,164 | $ 99,817 | $ 95,150 | $ 84,090 | $ 93,651 | $ 93,866 | $ 81,097 | $ 451,768 | [1],[2] | $ 352,704 | $ 282,084 | ||||||||||||
| Semiconductor Test and Inspection [Member] | ||||||||||||||||||||||||
| Net sales | 443,276 | 352,704 | 282,084 | |||||||||||||||||||||
| Semiconductor Test and Inspection [Member] | Systems [Member] | ||||||||||||||||||||||||
| Net sales | 249,514 | 197,454 | ||||||||||||||||||||||
| Semiconductor Test and Inspection [Member] | Non-systems [Member] | ||||||||||||||||||||||||
| Net sales | 193,737 | 155,250 | ||||||||||||||||||||||
| PCB Test [Member] | ||||||||||||||||||||||||
| Net sales | 8,492 | |||||||||||||||||||||||
| PCB Test [Member] | Systems [Member] | ||||||||||||||||||||||||
| Net sales | 6,565 | |||||||||||||||||||||||
| PCB Test [Member] | Non-systems [Member] | ||||||||||||||||||||||||
| Net sales | $ 1,952 | |||||||||||||||||||||||
| ||||||||||||||||||||||||
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions (Details Textual) $ / shares in Units, $ in Thousands |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
|
Oct. 01, 2018
USD ($)
$ / shares
shares
|
Jan. 04, 2017
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 30, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
[1] | |||
| Share Price | $ / shares | $ 25.10 | |||||||
| Secured Term Loan Facility [Member] | ||||||||
| Debt Instrument, Face Amount | $ 350,000 | |||||||
| Debt Instrument, Amortization, Percentage of Principal Amount | 0.25% | |||||||
| Debt Instrument, Prepayment Fee, Percentage | 1.00% | |||||||
| Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | ||||||||
| Debt Instrument, Basis Spread on Variable Rate | 3.00% | |||||||
| Xcerra [Member] | ||||||||
| Business Combination, Consideration Transferred, Total | $ 794,400 | |||||||
| Business Combination, Number of Brands Acquired | 4 | |||||||
| Payments to Acquire Businesses, Gross | $ 160,500 | |||||||
| Business Combination, Acquisition Related Costs | $ 9,800 | |||||||
| Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual | 94,400 | |||||||
| Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual | 40,000 | |||||||
| Xcerra [Member] | Fair Value Adjustment to Inventory [Member] | ||||||||
| Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value | $ 19,600 | |||||||
| Xcerra [Member] | Elimination of deal-related costs [Member] | ||||||||
| Business Combination, Acquisition Related Costs | 12,000 | |||||||
| Xcerra [Member] | Acquisition-related Costs [Member] | ||||||||
| Business Combination, Acquisition Related Costs | $ 37,800 | |||||||
| Xcerra [Member] | Severance and Other Separation Payments [Member] | ||||||||
| Business Combination, Contingent Consideration, Liability, Total | 6,900 | |||||||
| Xcerra [Member] | Common Stock [Member] | ||||||||
| Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares | 11,776,149 | |||||||
| Xcerra [Member] | Cohu RSUs [Member] | ||||||||
| Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares | 529,995 | |||||||
| Business Acquisition, Equity Interest Issued or Issuable, Value Assigned, Attributed to Pre-Merger Services | $ 800 | |||||||
| Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] | ||||||||
| Business Combination, Consideration Transferred, Total | $ 15,823 | |||||||
| Payments to Acquire Businesses, Gross | $ 15,000 | |||||||
| Business Combination, Contingent Consideration, Liability, Total | 1,487 | 2,253 | $ 823 | |||||
| Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 3,000 | |||||||
| Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] | Selling, General and Administrative Expenses [Member] | ||||||||
| Business Combination, Acquisition Related Costs | $ 400 | |||||||
| ||||||||
| X | ||||||||||
- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity, attributable to pre-Merger services. No definition available.
|
| X | ||||||||||
- Definition Represents the number of brands acquired in a business combination. No definition available.
|
| X | ||||||||||
- Definition Percentage of quarterly installments of the original principal, with balance payable at maturity. No definition available.
|
| X | ||||||||||
- Definition The prepayment fee, expressed as a percentage of the line of credit facility, for the credit facility. No definition available.
|
| X | ||||||||||
- Definition Number of shares of equity interests issued or issuable to acquire entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liability recognized arising from contingent consideration in a business combination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
|
| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions - Purchase Price Allocation, Xcerra Acquisition (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Oct. 01, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|---|---|
| Goodwill | $ 242,127 | $ 65,613 | $ 58,849 | |
| Xcerra [Member] | ||||
| Current assets, including cash received | $ 375,990 | |||
| Property, plant and equipment | 40,729 | |||
| Other assets | 2,109 | |||
| Intangible assets | 321,160 | |||
| Goodwill | 179,263 | |||
| Total assets acquired | 919,251 | |||
| Liabilities assumed | (124,821) | |||
| Net assets acquired | $ 794,430 |
| X | ||||||||||
- Definition Amount of assets acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liabilities assumed at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions - Preliminary Allocation of Intangible Assets, Xcerra Acquisition (Details) - Xcerra [Member] $ in Thousands |
Oct. 01, 2018
USD ($)
|
|---|---|
| Intangible assets, estimated fair value | $ 321,160 |
| In-process Technology [Member] | |
| Indefinite-lived intangible assets, estimated fair value | 36,360 |
| Developed Technology Rights [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 194,600 |
| Finite-lived intangible assets, average useful life (Year) | 7 years 292 days |
| Customer Relationships [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 65,890 |
| Finite-lived intangible assets, average useful life (Year) | 10 years 219 days |
| Order or Production Backlog [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 6,410 |
| Finite-lived intangible assets, average useful life (Year) | 292 days |
| Trade Names [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 16,800 |
| Finite-lived intangible assets, average useful life (Year) | 11 years |
| Off-Market Favorable Lease [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 1,100 |
| Finite-lived intangible assets, average useful life (Year) | 5 years 182 days |
| X | ||||||||||
- Definition Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with a finite or indefinite life, from an acquisition. No definition available.
|
| X | ||||||||||
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions - Unaudited Pro Forma Financial Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
[1],[2] | Sep. 29, 2018 |
[1] | Jun. 30, 2018 |
[1] | Mar. 31, 2018 |
[1] | Dec. 30, 2017 |
[1],[2] | Sep. 30, 2017 |
[1] | Jul. 01, 2017 |
[1] | Apr. 01, 2017 |
[1] | Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
||||||
| Net sales | $ 170,637 | $ 86,164 | [2] | $ 99,817 | [2] | $ 95,150 | [2] | $ 84,090 | $ 93,651 | $ 93,866 | $ 81,097 | $ 451,768 | [1],[2] | $ 352,704 | $ 282,084 | |||||||||
| Net loss | $ (56,997) | $ 4,803 | $ 11,648 | $ 8,122 | $ 6,895 | $ 8,755 | $ 10,430 | $ 6,763 | (32,424) | 32,843 | $ 3,039 | |||||||||||||
| Xcerra [Member] | ||||||||||||||||||||||||
| Net sales, pro forma | 771,314 | 808,255 | ||||||||||||||||||||||
| Net income (loss), pro forma | $ 9,473 | $ (29,545) | ||||||||||||||||||||||
| ||||||||||||||||||||||||
| X | ||||||||||
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions - Total Purchase Price (Details) - Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] $ in Thousands |
Jan. 04, 2017
USD ($)
|
|---|---|
| Cash paid to Kita shareholders | $ 15,000 |
| Fair value of contingent consideration | 823 |
| Total purchase price | $ 15,823 |
| X | ||||||||||
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions - Fair Value of Contingent Consideration (Details) - USD ($) $ in Thousands |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|||||
| Adjustments charged to expense | $ 657 | $ 1,423 | |||||
| Adjustment to contingent consideration liability | 657 | 1,423 | |||||
| Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] | |||||||
| Balance for contingent consideration | 2,253 | 823 | [1] | ||||
| Settlement of contingent consideration | (1,500) | ||||||
| Adjustments charged to expense | 657 | 1,423 | |||||
| Impact of currency exchange | 77 | 7 | |||||
| Balance for contingent consideration | 1,487 | 2,253 | $ 823 | [1] | |||
| Settlement of contingent consideration | (1,500) | ||||||
| Adjustment to contingent consideration liability | 657 | 1,423 | |||||
| Impact of currency exchange | $ 77 | $ 7 | |||||
| |||||||
| X | ||||||||||
- Definition The amount increase (decrease) in the value of foreign currency translation gain (loss) of a contingent consideration. No definition available.
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the settlement value of a contingent consideration. No definition available.
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of liability recognized arising from contingent consideration in a business combination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions - Purchase Price Allocation, Kita Acquisition (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
Jan. 04, 2017 |
Dec. 31, 2016 |
|---|---|---|---|---|
| Goodwill | $ 242,127 | $ 65,613 | $ 58,849 | |
| Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] | ||||
| Current assets, including cash received | $ 10,491 | |||
| Property, plant and equipment | 12,751 | |||
| Other assets | 2,397 | |||
| Intangible assets | 2,100 | |||
| Goodwill | 2,654 | |||
| Total assets acquired | 30,393 | |||
| Liabilities assumed | (14,570) | |||
| Net assets acquired | $ 15,823 |
| X | ||||||||||
- Definition Amount of assets acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liabilities assumed at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 2 - Business Acquisitions - Preliminary Allocation of Intangible Assets, Kita Acquisition (Details) - Kita Manufacturing Co. LTD. and Kita USA, Inc. [Member] $ in Millions |
Jan. 04, 2017
USD ($)
|
|---|---|
| Finite-lived intangible assets, estimated fair value | $ 2.1 |
| Developed Technology Rights [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 0.7 |
| Finite-lived intangible assets, average useful life (Year) | 8 years |
| Customer Relationships [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 0.6 |
| Finite-lived intangible assets, average useful life (Year) | 4 years |
| Noncompete Agreements [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 0.3 |
| Finite-lived intangible assets, average useful life (Year) | 10 years |
| Order or Production Backlog [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 0.1 |
| Finite-lived intangible assets, average useful life (Year) | 1 year |
| Trade Names [Member] | |
| Finite-lived intangible assets, estimated fair value | $ 0.4 |
| Finite-lived intangible assets, average useful life (Year) | 5 years |
| X | ||||||||||
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 3 - Goodwill and Purchased Intangible Assets (Details Textual) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 29, 2018
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 29, 2018
USD ($)
|
Sep. 29, 2018
USD ($)
|
Jun. 30, 2018
USD ($)
|
Mar. 31, 2018
USD ($)
|
Dec. 30, 2017
USD ($)
|
Sep. 30, 2017
USD ($)
|
Jul. 01, 2017
USD ($)
|
Apr. 01, 2017
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 30, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Number of Reportable Segments | 2 | 2 | 2 | ||||||||||
| Amortization of Intangible Assets, Total | $ 11,600 | $ 600 | $ 700 | $ 700 | $ 700 | $ 700 | $ 600 | $ 700 | $ 17,197 | $ 4,208 | $ 6,903 | ||
| Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | $ 38,900 | $ 38,900 | 38,900 | 38,900 | |||||||||
| Finite-Lived Intangible Assets, Amortization Expense, Year Two | 37,100 | 37,100 | 37,100 | 37,100 | |||||||||
| Finite-Lived Intangible Assets, Amortization Expense, Year Three | 33,800 | 33,800 | 33,800 | 33,800 | |||||||||
| Finite-Lived Intangible Assets, Amortization Expense, Year Four | 33,700 | 33,700 | 33,700 | 33,700 | |||||||||
| Finite-Lived Intangible Assets, Amortization Expense, Year Five | 33,400 | 33,400 | 33,400 | 33,400 | |||||||||
| Finite-Lived Intangible Assets, Amortization Expense, after Year Five | 105,800 | 105,800 | 105,800 | 105,800 | |||||||||
| In-process Technology [Member] | |||||||||||||
| Indefinite-lived Intangible Assets (Excluding Goodwill), Ending Balance | $ 36,300 | $ 36,300 | $ 36,300 | $ 36,300 | |||||||||
| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
|
| X | ||||||||||
- Details
|
Note 3 - Goodwill and Purchased Intangible Assets - Changes in Carrying Value of Goodwill (Details) - USD ($) $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
||||
| Beginning balance | $ 65,613 | $ 58,849 | |||
| Additions | 179,263 | 2,654 | |||
| Impact of currency exchange | (2,749) | 4,110 | |||
| Ending balance | 242,127 | 65,613 | |||
| Semiconductor Test and Inspection [Member] | |||||
| Beginning balance | [1] | 65,613 | 58,849 | ||
| Additions | [1] | 157,661 | 2,654 | ||
| Impact of currency exchange | [1] | (2,466) | 4,110 | ||
| Ending balance | [1] | 220,808 | 65,613 | ||
| PCB Test [Member] | |||||
| Beginning balance | |||||
| Additions | 21,602 | ||||
| Impact of currency exchange | (283) | ||||
| Ending balance | $ 21,319 | ||||
| |||||
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 3 - Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
|
| Accumulated Amortization | $ 35,203 | $ 18,464 |
| Gross Carrying Amount, finite-lived and indefinite-lived intangible assets | 317,857 | 35,212 |
| Developed Technology Rights [Member] | ||
| Gross Carrying Amount, finite-lived intangible assets | 214,266 | 20,780 |
| Accumulated Amortization | $ 21,197 | 12,623 |
| Remaining Useful Life (Year) | 7 years 146 days | |
| Customer Relationships [Member] | ||
| Gross Carrying Amount, finite-lived intangible assets | $ 73,104 | 7,934 |
| Accumulated Amortization | $ 7,378 | 4,838 |
| Remaining Useful Life (Year) | 10 years 36 days | |
| Trade Names [Member] | ||
| Gross Carrying Amount, finite-lived intangible assets | $ 22,701 | 6,185 |
| Accumulated Amortization | $ 1,807 | 972 |
| Remaining Useful Life (Year) | 10 years 182 days | |
| Order or Production Backlog [Member] | ||
| Gross Carrying Amount, finite-lived intangible assets | $ 6,372 | |
| Accumulated Amortization | $ 4,696 | |
| Remaining Useful Life (Year) | 182 days | |
| Off-Market Favorable Lease [Member] | ||
| Gross Carrying Amount, finite-lived intangible assets | $ 1,100 | |
| Accumulated Amortization | $ 62 | |
| Remaining Useful Life (Year) | 5 years 109 days | |
| Noncompete Agreements [Member] | ||
| Gross Carrying Amount, finite-lived intangible assets | $ 314 | 313 |
| Accumulated Amortization | $ 63 | $ 31 |
| Remaining Useful Life (Year) | 8 years |
| X | ||||||||||
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 4 - Borrowings and Credit Agreements (Details Textual) $ in Thousands, SFr in Millions |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
|
Oct. 01, 2018
USD ($)
|
Dec. 29, 2018
USD ($)
|
Dec. 29, 2018
CHF (SFr)
|
Dec. 30, 2017
USD ($)
|
||||
| Long-term Debt, Total | $ 358,655 | ||||||
| Long-term Debt, Current Maturities, Total | [1] | 6,676 | $ 4,388 | ||||
| Long-term Line of Credit, Total | [1] | 3,115 | 3,108 | ||||
| Ismeca [Member] | |||||||
| Line of Credit Facility, Maximum Borrowing Capacity | SFr | SFr 2 | ||||||
| Long-term Line of Credit, Total | $ 0 | $ 0 | |||||
| Number of Available Lines of Credit | 1 | 1 | |||||
| Revolving Credit Facility [Member] | |||||||
| Line of Credit Facility, Maximum Borrowing Capacity | $ 6,200 | ||||||
| Long-term Line of Credit, Total | 3,100 | ||||||
| Secured Term Loan Facility [Member] | |||||||
| Debt Instrument, Face Amount | $ 350,000 | ||||||
| Debt Instrument, Amortization, Percentage of Principal Amount | 0.25% | ||||||
| Long-term Debt, Total | 340,600 | ||||||
| Long-term Debt, Current Maturities, Total | 2,400 | ||||||
| Long-term Debt, Fair Value | 336,900 | ||||||
| Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | |||||||
| Debt Instrument, Basis Spread on Variable Rate | 3.00% | ||||||
| Kita Term Loans [Member] | |||||||
| Long-term Debt, Total | 4,600 | ||||||
| Long-term Debt, Current Maturities, Total | $ 900 | ||||||
| Kita Term Loans [Member] | Minimum [Member] | |||||||
| Debt Instrument, Interest Rate, Stated Percentage | 0.05% | 0.05% | |||||
| Kita Term Loans [Member] | Maximum [Member] | |||||||
| Debt Instrument, Interest Rate, Stated Percentage | 0.45% | 0.45% | |||||
| Xcerra Term Loan [Member] | |||||||
| Long-term Debt, Total | $ 1,800 | ||||||
| Long-term Debt, Current Maturities, Total | $ 300 | ||||||
| Debt Instrument, Interest Rate, Stated Percentage | 2.35% | 2.35% | |||||
| Debt Instrument, Term | 10 years | ||||||
| |||||||
| X | ||||||||||
- Definition Percentage of quarterly installments of the original principal, with balance payable at maturity. No definition available.
|
| X | ||||||||||
- Definition Represents the number of available lines of credit as of the balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
|
| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 4 - Borrowings and Credit Agreements - Summary of Borrowings (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|||
|---|---|---|---|---|---|
| Lines of Credit | [1] | $ 3,115 | $ 3,108 | ||
| Total debt | [1] | 358,655 | 8,963 | ||
| Less: financing fees and discount | [1] | (8,551) | |||
| Less: current portion | [1] | (6,676) | (4,388) | ||
| Total long-term debt | [1] | 343,428 | 4,575 | ||
| Secured Term Loan Facility [Member] | |||||
| Bank Term Loan under Credit Agreement | [1] | 349,125 | |||
| Less: current portion | (2,400) | ||||
| Kita Term Loans [Member] | |||||
| Bank Term Loan under Credit Agreement | [1] | 4,576 | 5,855 | ||
| Less: current portion | (900) | ||||
| Xcerra [Member] | |||||
| Bank Term Loan under Credit Agreement | [1] | $ 1,839 | |||
| |||||
| X | ||||||||||
- Definition Represents the aggregate of total long-term debt, including current maturities and short-term debt, before financing fees and discount. No definition available.
|
| X | ||||||||||
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of unamortized debt discount (premium) and debt issuance costs. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 4 - Borrowings and Credit Agreements - Debt Principal Payments for the Next Five Years and Thereafter (Details) $ in Thousands |
Dec. 29, 2018
USD ($)
|
|---|---|
| 2019 | $ 7,791 |
| 2020 | 4,195 |
| 2021 | 4,082 |
| 2022 | 4,082 |
| 2023 | 4,082 |
| Thereafter | 334,423 |
| Total | $ 358,655 |
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 5 - Restructuring Charges (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Restructuring Charges, Total | $ 18,704 | ||
| Integration Program [Member] | |||
| Restructuring Charges, Total | 37,757 | ||
| Integration Program [Member] | Employee Severance [Member] | |||
| Restructuring Charges, Total | 17,791 | ||
| Integration Program [Member] | Employee Severance [Member] | Executive Officers and Board of Directors of Xcerra [Member] | |||
| Restructuring Charges, Total | 8,200 | ||
| Integration Program [Member] | Severance and Other Separation Payments [Member] | |||
| Business Combination, Contingent Consideration, Liability, Total | $ 6,900 | ||
| X | ||||||||||
- Definition Amount of liability recognized arising from contingent consideration in a business combination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 5 - Restructuring Charges - Charges Related to the Wind Down Plan (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Restructuring charges, total | $ 18,704 | ||
| Restructuring Charges, Total | 18,704 | ||
| Integration Program [Member] | |||
| Restructuring charges, total | 37,757 | ||
| Restructuring Charges, Total | 37,757 | ||
| Employee Severance [Member] | Integration Program [Member] | |||
| Restructuring charges, total | 17,791 | ||
| Accrued restructuring, beginning balance | |||
| Restructuring Charges, Total | 17,791 | ||
| Amounts paid or charged | (13,750) | ||
| Impact of currency exchange | (15) | ||
| Accrued restructuring, ending balance | 4,026 | ||
| Inventory Charges [Member] | Integration Program [Member] | |||
| Restructuring charges, total | 19,053 | ||
| Restructuring Charges, Total | 19,053 | ||
| Other Restructuring [Member] | Integration Program [Member] | |||
| Restructuring charges, total | 913 | ||
| Restructuring Charges, Total | $ 913 | ||
| X | ||||||||||
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans (Details Textual) - USD ($) |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
Dec. 26, 2015 |
|
| Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 50.00% | |||
| Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 8.00% | |||
| Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 1,100,000 | $ 600,000 | $ 600,000 | |
| Deferred Compensation Liability, Current, Total | 2,000,000 | 2,300,000 | ||
| Cash Surrender Value of Life Insurance | $ 1,600,000 | $ 2,200,000 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 0 | 0 | 0 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $ 900,000 | $ 10,100,000 | $ 500,000 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | 2,300,000 | |||
| Allocated Share-based Compensation Expense, Total | $ 10,053,000 | $ 7,007,000 | $ 7,143,000 | |
| Accounting Standards Update 2016-09 [Member] | ||||
| Cumulative Effect of New Accounting Principle in Period of Adoption | $ 200,000 | |||
| Restricted Stock Units (RSUs) [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 822,000 | 353,000 | 471,000 | |
| Restricted Stock Units (RSUs) [Member] | Xcerra Employees [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 529,995 | |||
| Restricted Stock Units (RSUs) [Member] | Executive Officers and Board of Directors of Xcerra [Member] | ||||
| Allocated Share-based Compensation Expense, Total | $ 8,200,000 | |||
| Restricted Stock Units (RSUs) [Member] | Vesting Over One Year Period [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 1 year | |||
| Restricted Stock Units (RSUs) [Member] | Vesting Over Two Year Period [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 2 years | |||
| Restricted Stock Units (RSUs) [Member] | Vesting Over Four Year Period [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 4 years | |||
| Equity Based Performance Stock Units Granted in 2018, 2017, and 2016 [Member] | Vest on the Third Anniversary of Awards Grant [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 100.00% | |||
| Equity-based Performance Stock Units Granted in 2015 [Member] | Vest on the Second and Third Anniversary of Awards Grant [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 50.00% | |||
| Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) [Member] | ||||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total | $ 21,200,000 | |||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 2 years 146 days | |||
| Employee Stock Purchase Plan [Member] | ||||
| Employee Stock Purchase Plan, Shares Reserved for Future Issuance | 2,650,000 | |||
| Percentage of Fair Value to Determine Price of Common Stock | 85.00% | |||
| Stock Issued During Period, Shares, Employee Stock Purchase Plans | 84,678 | 99,144 | 110,579 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 598,610 | |||
| Equity Incentive Plan 2005 [Member] | ||||
| Percentage of Fair Value to Determine Price of Common Stock | 100.00% | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 1,198,058 | |||
| Equity Incentive Plan 2005 [Member] | Employee Stock Option [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years | |||
| Equity Incentive Plan 2005 [Member] | Minimum [Member] | Employee Stock Option [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 1 year | |||
| Equity Incentive Plan 2005 [Member] | Maximum [Member] | Employee Stock Option [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 4 years | |||
| Postretirement Health Coverage [Member] | ||||
| Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year | $ 100,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | 100,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 100,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 100,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 200,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 200,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | 900,000 | |||
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | $ 100,000 | $ 100,000 | $ 100,000 | |
| Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate | 4.10% | 3.40% | 3.90% | |
| Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year | 8.80% | |||
| Defined Benefit Plan, Health Care Cost Trend Rate, Annual Rate of Change | 0.60% | |||
| Defined Benefit Plan, Ultimate Health Care Cost Trend Rate | 4.40% | |||
| Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate | 2027 | |||
| Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components | $ 14,000 | |||
| Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components | 12,000 | |||
| Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation | 349,000 | |||
| Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation | 298,000 | |||
| Swiss Plan [Member] | ||||
| Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax | (2,700,000) | $ (3,100,000) | ||
| Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year | 800,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | 700,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 900,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 1,000,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 800,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 1,300,000 | |||
| Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | 5,900,000 | |||
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | $ 1,008,000 | $ 986,000 | $ 966,000 | |
| Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate | 0.90% | 0.70% | ||
| Swiss Plan [Member] | Debt Securities and Cash [Member] | ||||
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 67.00% | |||
| Swiss Plan [Member] | Real Estate Investments [Member] | ||||
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 16.00% | |||
| Swiss Plan [Member] | Alternative Investments [Member] | ||||
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 8.00% | |||
| Swiss Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | ||||
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 9.00% | |||
| X | ||||||||||
- Definition The annual rate of change (increase (decrease)) in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. No definition available.
|
| X | ||||||||||
- Definition The shares reserved for future issuance under the employee stock purchase plan. No definition available.
|
| X | ||||||||||
- Definition Percentage of the Fair Value to Determine the price of common stock. No definition available.
|
| X | ||||||||||
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. No definition available.
|
| X | ||||||||||
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in accumulated postretirement benefit obligation from one-percentage-point decrease in assumed health care cost trend rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point decrease in assumed health care cost trend rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in accumulated postretirement benefit obligation from one-percentage-point increase in assumed health care cost trend rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point increase in assumed health care cost trend rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Ultimate trend rate for health care cost for defined benefit postretirement plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Year ultimate health care cost trend rate is expected to be reached, in CCYY format. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
|
| X | ||||||||||
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
|
| X | ||||||||||
- Definition Percentage employer matches of the employee's percentage contribution matched. No definition available.
|
| X | ||||||||||
- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
- Definition Percentage of vesting of share-based compensation awards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares issued during the period as a result of an employee stock purchase plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Net Periodic Benefit Cost of Swiss Plan (Details) - Swiss Plan [Member] - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Service cost | $ 925 | $ 907 | $ 868 |
| Interest cost | 207 | 198 | 245 |
| Expected return on assets | (124) | (119) | (147) |
| Net periodic costs | $ 1,008 | $ 986 | $ 966 |
| X | ||||||||||
- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Benefit Obligation, Fair Value of Plan Assets, Funded Status and Liability of Swiss Plan (Details) - Swiss Plan [Member] - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Benefit obligation at beginning of year | $ (30,512) | $ (27,499) | |
| Service cost | (925) | (907) | $ (868) |
| Interest cost | (207) | (198) | (245) |
| Actuarial gain (loss) | 708 | (628) | |
| Participant contributions | (816) | (789) | |
| Benefits paid | 1,079 | 743 | |
| Plan change | 199 | ||
| Foreign currency exchange adjustment | 564 | (1,234) | |
| Benefit obligation at end of year | (29,910) | (30,512) | (27,499) |
| Fair value of plan assets at beginning of year | 17,746 | 16,077 | |
| Return on assets, net of actuarial loss | 114 | 112 | |
| Employer contributions | 816 | 789 | |
| Participant contributions | 816 | 789 | |
| Benefits paid | (1,079) | (743) | |
| Foreign currency exchange adjustment | (325) | 722 | |
| Fair value of plan assets at end of year | 18,088 | 17,746 | $ 16,077 |
| Net liability at end of year | $ (11,822) | $ (12,766) | |
| X | ||||||||||
- Definition Amount of the payment (recovery) to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, life insurance benefits, and legal, educational and advisory services. No definition available.
|
| X | ||||||||||
- Definition Amount of payment (recovery) to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. No definition available.
|
| X | ||||||||||
- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of contributions received by defined benefit plan from participant which increase benefit obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which (increases) decreases benefit obligation of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in benefit obligation of defined benefit plan from change, classified as other. No definition available.
|
| X | ||||||||||
- Definition Amount of contributions received by defined benefit plan from participant which increases plan assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Weighted-average Actuarial Assumptions to Determine Benefit Obligation and Net Periodic Benefit Cost (Details) - Swiss Plan [Member] |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Discount rate | 0.90% | 0.70% | |
| Compensation increase | 1.80% | 1.80% | |
| Discount rate | 0.70% | 0.70% | 1.00% |
| Rate of return on Assets | 0.70% | 0.70% | 1.00% |
| Compensation increase | 1.80% | 1.50% | 1.80% |
| X | ||||||||||
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Post-retirement Benefit Obligation to Funded Status and Liability (Details) - Postretirement Health Coverage [Member] - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
|
| Accumulated benefit obligation at beginning of year | $ 3,148 | $ 2,490 |
| Interest cost | 105 | 95 |
| Actuarial (gain) loss | (216) | 677 |
| Benefits paid | (157) | (114) |
| Accumulated benefit obligation at end of year | 2,880 | 3,148 |
| Plan assets at end of year | ||
| Funded status | $ (2,880) | $ (3,148) |
| X | ||||||||||
- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Stock Option Activity Under Share-based Compensation Plans (Details) - $ / shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Outstanding, beginning of year (in shares) | 472 | 1,641 | 1,965 |
| Outstanding, weighted average exercise price, beginning of year (in dollars per share) | $ 10.20 | $ 10.79 | $ 11.25 |
| Exercised (in shares) | (67) | (1,164) | (101) |
| Exercised, weighted average exercise price (in dollars per share) | $ 10.10 | $ 10.98 | $ 7.89 |
| Cancelled (in shares) | (5) | (223) | |
| Cancelled, weighted average exercise price (in dollars per share) | $ 20.73 | $ 16.19 | |
| Outstanding, end of year (in shares) | 405 | 472 | 1,641 |
| Outstanding, weighted average exercise price, end of year (in dollars per share) | $ 10.22 | $ 10.20 | $ 10.79 |
| Options exercisable at year end (in shares) | 405 | 469 | 1,537 |
| Options exercisable at year end, weighted average exercise price (in dollars per share) | $ 10.22 | $ 10.20 | $ 10.85 |
| X | ||||||||||
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 6 - Employee Benefit Plans - Stock Options Outstanding and Exercisable (Details) - $ / shares shares in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
Dec. 26, 2015 |
|
| Number Outstanding (in shares) | 405 | 472 | 1,641 | 1,965 |
| Options Outstanding, Weighted Average Remaining Life (Year) | 3 years 219 days | |||
| Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 10.22 | $ 10.20 | $ 10.79 | $ 11.25 |
| Options Exercisable (in shares) | 405 | 469 | 1,537 | |
| Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 10.22 | $ 10.20 | $ 10.85 | |
| Range 1 [Member] | ||||
| Range of Exercise Prices, Lower (in dollars per share) | 7.32 | |||
| Range of Exercise Prices, Upper (in dollars per share) | $ 9,440 | |||
| Number Outstanding (in shares) | 225 | |||
| Options Outstanding, Weighted Average Remaining Life (Year) | 4 years | |||
| Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 9,350 | |||
| Options Exercisable (in shares) | 225 | |||
| Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 9.35 | |||
| Range 2 [Member] | ||||
| Range of Exercise Prices, Lower (in dollars per share) | 9.45 | |||
| Range of Exercise Prices, Upper (in dollars per share) | $ 10.54 | |||
| Number Outstanding (in shares) | 10 | |||
| Options Outstanding, Weighted Average Remaining Life (Year) | 3 years | |||
| Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 10.54 | |||
| Options Exercisable (in shares) | 10 | |||
| Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 10.54 | |||
| Range 3 [Member] | ||||
| Range of Exercise Prices, Lower (in dollars per share) | 10.55 | |||
| Range of Exercise Prices, Upper (in dollars per share) | $ 15.89 | |||
| Number Outstanding (in shares) | 170 | |||
| Options Outstanding, Weighted Average Remaining Life (Year) | 3 years 73 days | |||
| Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 11.34 | |||
| Options Exercisable (in shares) | 170 | |||
| Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 11.34 |
| X | ||||||||||
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Restricted Stock Unit Activity Under Share-based Compensation Plans (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Outstanding, beginning of year, units (in shares) | 981 | 1,083 | 1,078 |
| Outstanding, beginning of year, wt. avg. (in dollars per share) | $ 12.50 | $ 10.50 | $ 9.93 |
| Granted, units (in shares) | 822 | 353 | 471 |
| Granted, wt. avg. (in dollars per share) | $ 23.70 | $ 15.95 | $ 11.25 |
| Released, units (in shares) | (500) | (409) | (409) |
| Released, wt. avg. (in dollars per share) | $ 13.10 | $ 10.26 | $ 9.90 |
| Cancelled, units (in shares) | (38) | (46) | (57) |
| Cancelled, wt. avg. (in dollars per share) | $ 14.67 | $ 11.85 | $ 10.25 |
| Outstanding, end of year, units (in shares) | 1,265 | 981 | 1,083 |
| Outstanding, end of year, wt. avg. (in dollars per share) | $ 19.48 | $ 12.50 | $ 10.50 |
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Equity-based Performance Stock Units (Details) |
12 Months Ended |
|---|---|
Dec. 29, 2018 | |
| Equity-based Performance Stock Units Granted in 2018 [Member] | |
| Performance Criteria Period (Year) | 3 years |
| Equity-based Performance Stock Units Granted in 2018 [Member] | Minimum [Member] | |
| Range of Award | 25.00% |
| Equity-based Performance Stock Units Granted in 2018 [Member] | Maximum [Member] | |
| Range of Award | 200.00% |
| Equity-based Performance Stock Units Granted in 2017 [Member] | |
| Performance Criteria Period (Year) | 3 years |
| Equity-based Performance Stock Units Granted in 2017 [Member] | Minimum [Member] | |
| Range of Award | 25.00% |
| Equity-based Performance Stock Units Granted in 2017 [Member] | Maximum [Member] | |
| Range of Award | 200.00% |
| Equity-based Performance Stock Units Granted in 2016 [Member] | |
| Performance Criteria Period (Year) | 3 years |
| Equity-based Performance Stock Units Granted in 2016 [Member] | Minimum [Member] | |
| Range of Award | 25.00% |
| Equity-based Performance Stock Units Granted in 2016 [Member] | Maximum [Member] | |
| Range of Award | 200.00% |
| Equity-based Performance Stock Units Granted in 2015 [Member] | |
| Performance Criteria Period (Year) | 2 years |
| Equity-based Performance Stock Units Granted in 2015 [Member] | Minimum [Member] | |
| Range of Award | 25.00% |
| Equity-based Performance Stock Units Granted in 2015 [Member] | Maximum [Member] | |
| Range of Award | 200.00% |
| X | ||||||||||
- Definition The percent of the original grant of equity-based compensation awards that may be granted as part of a performance-based equity compensation program. No definition available.
|
| X | ||||||||||
- Definition In a performance-based equity compensation plan, the timing in which performance goals are set relative to the grant date. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Performance Based Stock Unit Activity Under Share-based Compensation Plans (Details) - Equity Based Performance Stock Units [Member] - $ / shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Outstanding, beginning of year, units (in shares) | 334 | 403 | 376 |
| Outstanding, beginning of year, wt. avg. (in dollars per share) | $ 14.31 | $ 11.04 | $ 10.80 |
| Granted, units (in shares) | 89 | 185 | 222 |
| Granted, wt. avg. (in dollars per share) | $ 24.32 | $ 17.60 | $ 11.38 |
| Released, units (in shares) | (41) | (186) | (172) |
| Released, wt. avg. (in dollars per share) | $ 9.92 | $ 11.35 | $ 11.27 |
| Cancelled, units (in shares) | (42) | (68) | (23) |
| Cancelled, wt. avg. (in dollars per share) | $ 10.69 | $ 11.94 | $ 8.75 |
| Outstanding, end of year, units (in shares) | 340 | 334 | 403 |
| Outstanding, end of year, wt. avg. (in dollars per share) | $ 17.89 | $ 14.31 | $ 11.04 |
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Weighted-average Assumptions to Value Share-based Awards Granted (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Restricted Stock Units (RSUs) [Member] | |||
| Dividend yield | 1.00% | 1.40% | 2.00% |
| Employee Stock Purchase Plan [Member] | |||
| Dividend yield | 1.10% | 1.40% | 2.00% |
| Expected volatility | 39.00% | 33.30% | 31.20% |
| Risk-free interest rate | 1.70% | 0.70% | 0.30% |
| Expected term (Year) | 182 days | 182 days | 182 days |
| Weighted-average grant date fair value per share (in dollars per share) | $ 5.90 | $ 4.63 | $ 2.82 |
| X | ||||||||||
- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 6 - Employee Benefit Plans - Reported Share-based Compensation in Consolidated Financial Statements (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Share-based compensation of continuing operations | $ 10,053 | $ 7,007 | $ 7,143 |
| Income tax benefit | (993) | (530) | (269) |
| Total share-based compensation, net of tax | 9,060 | 6,477 | 6,874 |
| Cost of Sales [Member] | |||
| Share-based compensation of continuing operations | 546 | 423 | 398 |
| Research and Development Expense [Member] | |||
| Share-based compensation of continuing operations | 1,717 | 1,054 | 1,292 |
| Selling, General and Administrative Expenses [Member] | |||
| Share-based compensation of continuing operations | $ 7,790 | $ 5,530 | $ 5,453 |
| X | ||||||||||
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
|
| X | ||||||||||
- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 7 - Financial Instruments Measured at Fair Value (Details Textual) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | $ 0 | $ 13,200 |
| X | ||||||||||
- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. No definition available.
|
Note 7 - Financial Instruments Measured at Fair Value - Short-term Investments by Security Type (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|||||
|---|---|---|---|---|---|---|---|
| Amortized Cost | $ 21,338 | ||||||
| Gross Unrealized Gains | 1 | ||||||
| Gross Unrealized Losses | [1] | 10 | |||||
| Short-term investments | $ 560 | 21,329 | |||||
| Debt Security, Government, Non-US [Member] | |||||||
| Amortized Cost | 560 | 619 | |||||
| Gross Unrealized Gains | |||||||
| Gross Unrealized Losses | [1] | ||||||
| Short-term investments | $ 560 | 619 | |||||
| Corporate Debt Securities [Member] | |||||||
| Amortized Cost | [2] | 12,784 | |||||
| Gross Unrealized Gains | [2] | 1 | |||||
| Gross Unrealized Losses | [1],[2] | 6 | |||||
| Short-term investments | [2] | 12,779 | |||||
| US Treasury Securities [Member] | |||||||
| Amortized Cost | 7,935 | ||||||
| Gross Unrealized Gains | |||||||
| Gross Unrealized Losses | [1] | 4 | |||||
| Short-term investments | $ 7,931 | ||||||
| |||||||
| X | ||||||||||
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. No definition available.
|
| X | ||||||||||
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. No definition available.
|
| X | ||||||||||
- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 7 - Financial Instruments Measured at Fair Value - Effective Maturities of Short-term Investments (Details) $ in Thousands |
Dec. 29, 2018
USD ($)
|
|---|---|
| Due after one year through three years, amortized cost | $ 560 |
| Due after one year through three years, fair value | $ 560 |
| X | ||||||||||
- Definition The estimated fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through third fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. No definition available.
|
| X | ||||||||||
- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the third fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. No definition available.
|
Note 7 - Financial Instruments Measured at Fair Value - Assets Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| $ 165,020 | $ 155,615 | |
| Debt Security, Government, Non-US [Member] | ||
| Short-term investments | 560 | 619 |
| Corporate Debt Securities [Member] | ||
| Short-term investments | 22,014 | |
| US Treasury Securities [Member] | ||
| Short-term investments | 8,431 | |
| US Government-sponsored Enterprises Debt Securities [Member] | ||
| Short-term investments | 1,496 | |
| Cash [Member] | ||
| Cash and cash equivalents | 144,696 | 100,850 |
| Money Market Funds [Member] | ||
| Cash and cash equivalents | 19,764 | 22,205 |
| Fair Value, Inputs, Level 1 [Member] | ||
| 144,696 | 100,850 | |
| Fair Value, Inputs, Level 1 [Member] | Debt Security, Government, Non-US [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 1 [Member] | US Government-sponsored Enterprises Debt Securities [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 1 [Member] | Cash [Member] | ||
| Cash and cash equivalents | 144,696 | 100,850 |
| Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] | ||
| Cash and cash equivalents | ||
| Fair Value, Inputs, Level 2 [Member] | ||
| 20,324 | 54,765 | |
| Fair Value, Inputs, Level 2 [Member] | Debt Security, Government, Non-US [Member] | ||
| Short-term investments | 560 | 619 |
| Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | ||
| Short-term investments | 22,014 | |
| Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member] | ||
| Short-term investments | 8,431 | |
| Fair Value, Inputs, Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member] | ||
| Short-term investments | 1,496 | |
| Fair Value, Inputs, Level 2 [Member] | Cash [Member] | ||
| Cash and cash equivalents | ||
| Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member] | ||
| Cash and cash equivalents | 19,764 | 22,205 |
| Fair Value, Inputs, Level 3 [Member] | ||
| Fair Value, Inputs, Level 3 [Member] | Debt Security, Government, Non-US [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 3 [Member] | US Government-sponsored Enterprises Debt Securities [Member] | ||
| Short-term investments | ||
| Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member] | ||
| Cash and cash equivalents |
| X | ||||||||||
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. No definition available.
|
| X | ||||||||||
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 8 - Income Taxes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 35.00% | 35.00% |
| Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount | $ 5,100 | $ 16,600 | |
| Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability | (4,000) | ||
| Deferred Tax Assets, Valuation Allowance, Total | 84,718 | 31,491 | |
| Increase (Decrease) of Net Income Due to Impact of Tax Holidays | $ 2,400 | $ 2,800 | $ 1,000 |
| Increase (Decrease) of Earning Per Share Due To Impact Of Tax Holidays | $ 0.08 | $ 0.10 | $ 0.04 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 8,200 | $ 4,300 | |
| Decrease in Unrecognized Tax Benefits is Reasonably Possible | 2,700 | 600 | |
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total | $ 1,500 | 1,100 | |
| Unrecognized Tax Benefits, Interest Expense, Net of Accrued Interest Reversed | $ (300) | ||
| Minimum [Member] | |||
| Collection Term Range | 4 years | ||
| Maximum [Member] | |||
| Collection Term Range | 10 years | ||
| Domestic Tax Authority [Member] | |||
| Operating Loss Carryforwards, Total | $ 244,200 | ||
| Tax Credit Carryforward, Amount | $ 13,500 | ||
| Open Tax Year | 2014 2015 2016 2017 2018 | ||
| State and Local Jurisdiction [Member] | |||
| Operating Loss Carryforwards, Total | $ 147,600 | ||
| Tax Credit Carryforward, Amount | $ 53,500 | ||
| Open Tax Year | 2013 2014 2015 2016 2017 2018 | ||
| Foreign Tax Authority [Member] | |||
| Operating Loss Carryforwards, Total | $ 12,700 | ||
| X | ||||||||||
- Definition The collection term range. No definition available.
|
| X | ||||||||||
- Definition The increase or decrease of earning per share due to impact of tax holidays. No definition available.
|
| X | ||||||||||
- Definition Increase (decrease) in net income due to the impact of tax holidays. No definition available.
|
| X | ||||||||||
- Definition Amount of interest expense net of accrued interest reversed for an underpayment of income taxes. No definition available.
|
| X | ||||||||||
- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to repatriation of foreign earnings. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 8 - Income Taxes - Components of Provision (Benefit) for Income Taxes for Continuing Operations (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| U.S. Federal | $ 12 | $ 11 | |
| U.S. State | 51 | 18 | 8 |
| Foreign | 8,787 | 6,005 | 3,793 |
| Total current | 8,838 | 6,035 | 3,812 |
| U.S. Federal | 56 | (3,451) | 91 |
| U.S. State | (481) | 47 | |
| Foreign | (8,263) | 141 | (1,203) |
| Total deferred | (8,207) | (3,791) | (1,065) |
| $ 631 | $ 2,244 | $ 2,747 | |
| X | ||||||||||
- Definition Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
Note 8 - Income Taxes - Income (Loss) Before Income Taxes From Continuing Operations (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Income (loss) from continuing operations, U.S. | $ (42,682) | $ 1,430 | $ (13,420) |
| Income from continuing operations, Foreign | 10,770 | 33,935 | 19,427 |
| Income (loss) from continuing operations before taxes | $ (31,912) | $ 35,365 | $ 6,007 |
| X | ||||||||||
- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 8 - Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| Inventory, receivable and warranty reserves | $ 12,560 | $ 3,417 |
| Net operating loss carryforwards | 65,587 | 7,467 |
| Tax credit carryforwards | 34,251 | 14,724 |
| Accrued employee benefits | 5,134 | 4,796 |
| Deferred profit and gain on facility sale | 3,032 | 3,617 |
| Stock-based compensation | 2,108 | 1,897 |
| Acquisition basis differences | 1,158 | 1,606 |
| Other | 3,637 | 208 |
| Gross deferred tax assets | 127,467 | 37,732 |
| Less valuation allowance | (84,718) | (31,491) |
| Total deferred tax assets | 42,749 | 6,241 |
| Depreciation and fixed asset related | 3,156 | 120 |
| Intangible assets and other acquisition basis differences | 70,415 | 5,518 |
| Unremitted earnings of foreign subsidiaries | 5,257 | 2,002 |
| Other | 437 | |
| Total deferred tax liabilities | 78,828 | 8,077 |
| Net deferred tax liabilities | $ (36,079) | $ (1,836) |
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from acquisition basis differences. No definition available.
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory and warranty reserves. No definition available.
|
| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from acquisition basis differences. No definition available.
|
| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from employee benefits, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 8 - Income Taxes - Reconciliation of Income Tax Computed at U.S. Federal Statutory Tax Rate to Provision (Benefit) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Tax provision at U.S. 21% statutory rate (35% in 2017 & 2016) | $ (6,702) | $ 12,378 | $ 2,102 |
| Impact of Tax Act, before reduction in valuation allowance | 5,095 | 12,397 | |
| State income taxes, net of federal tax benefit | (663) | 56 | 168 |
| Settlements, adjustments and releases from statute expirations | (783) | (1,731) | (312) |
| Federal tax credits | (864) | (371) | (183) |
| Stock-based compensation | (838) | (2,801) | 168 |
| Executive compensation limited by Section 162(m) | 3,456 | 246 | |
| Change in valuation allowance | (2,015) | (13,484) | 2,430 |
| Non-deductible transaction related costs | 1,106 | 331 | 463 |
| GILTI | 3,531 | ||
| Foreign rate differential | (435) | (4,866) | (2,378) |
| Other, net | (257) | 89 | 289 |
| $ 631 | $ 2,244 | $ 2,747 | |
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to GILTI. No definition available.
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to limited executive compensation. No definition available.
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements adjustments and releases from statute expiration. No definition available.
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nondeductible expenses. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 8 - Income Taxes - Reconciliation of Income Tax Computed at U.S. Federal Statutory Tax Rate to Provision (Benefit) (Details) (Parentheticals) |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| U.S. statutory rate | 21.00% | 35.00% | 35.00% |
| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 8 - Income Taxes - Reconciliation of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Balance at beginning of year | $ 10,321 | $ 10,075 | $ 10,444 |
| Gross additions for tax positions of current year | 524 | 200 | 125 |
| Gross additions for tax positions of prior years | 191 | 58 | 58 |
| Reductions due to lapse of the statute of limitations | (645) | (1,148) | (446) |
| Foreign exchange rate impact | (42) | (106) | |
| Foreign exchange rate impact | 236 | ||
| Balance at end of year | 34,701 | 10,321 | 10,075 |
| Xcerra and Kita [Member] | |||
| Gross additions related to Xcerra and Kita acquisitions | $ 24,352 | $ 900 | |
| X | ||||||||||
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from foreign currency translation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from acquisitions. No definition available.
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from foreign currency translation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 9 - Segment and Geographic Information (Details Textual) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Dec. 29, 2018 |
Dec. 29, 2018 |
Dec. 29, 2018 |
|
| Number of Operating Segments | 4 | 4 | |
| Number of Reportable Segments | 2 | 2 | 2 |
| X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. No definition available.
|
| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
|
Note 9 - Segment and Geographic Information - Summary of Current Segments (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
Sep. 29, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 30, 2017 |
Sep. 30, 2017 |
Jul. 01, 2017 |
Apr. 01, 2017 |
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
||||||||||||||
| Net sales by segment: | ||||||||||||||||||||||||
| Net sales | $ 170,637 | [1],[2] | $ 86,164 | [1],[2] | $ 99,817 | [1],[2] | $ 95,150 | [1],[2] | $ 84,090 | [1],[2] | $ 93,651 | [1] | $ 93,866 | [1] | $ 81,097 | [1] | $ 451,768 | [1],[2] | $ 352,704 | $ 282,084 | ||||
| Segment profit (loss) before tax: | ||||||||||||||||||||||||
| Profit (loss) for reportable segments | (2,665) | 42,535 | 13,516 | |||||||||||||||||||||
| Interest expense | (4,977) | (54) | ||||||||||||||||||||||
| Interest income | 1,187 | 671 | 342 | |||||||||||||||||||||
| Income (loss) from continuing operations before taxes | (31,912) | 35,365 | 6,007 | |||||||||||||||||||||
| Depreciation and amortization by segment deducted in arriving at profit (loss): | ||||||||||||||||||||||||
| Depreciation | 8,850 | 4,987 | 3,509 | |||||||||||||||||||||
| Amortization of Intangible Assets, Total | 11,600 | $ 600 | $ 700 | $ 700 | 700 | $ 700 | $ 600 | $ 700 | 17,197 | 4,208 | 6,903 | |||||||||||||
| Total depreciation and amortization for reportable segments | 26,047 | 9,195 | 10,412 | |||||||||||||||||||||
| Capital expenditures | 4,967 | 6,093 | 3,452 | |||||||||||||||||||||
| Total assets by segment: | ||||||||||||||||||||||||
| Total assets for reportable segments | 1,134,002 | 420,457 | 1,134,002 | 420,457 | 345,512 | |||||||||||||||||||
| Discontinued operations | 3,820 | 3,820 | ||||||||||||||||||||||
| Corporate, Non-Segment [Member] | ||||||||||||||||||||||||
| Segment profit (loss) before tax: | ||||||||||||||||||||||||
| Corporate expenses | (25,457) | (7,787) | (7,851) | |||||||||||||||||||||
| Total assets by segment: | ||||||||||||||||||||||||
| Total assets for reportable segments | 34,367 | 52,299 | 34,367 | 52,299 | 54,004 | |||||||||||||||||||
| Semiconductor Test and Inspection [Member] | ||||||||||||||||||||||||
| Net sales by segment: | ||||||||||||||||||||||||
| Net sales | 443,276 | 352,704 | 282,084 | |||||||||||||||||||||
| Segment profit (loss) before tax: | ||||||||||||||||||||||||
| Profit (loss) for reportable segments | 2,489 | 42,535 | 13,516 | |||||||||||||||||||||
| Depreciation and amortization by segment deducted in arriving at profit (loss): | ||||||||||||||||||||||||
| Depreciation | 8,636 | 4,987 | 3,509 | |||||||||||||||||||||
| Capital expenditures | 4,957 | 6,093 | 3,452 | |||||||||||||||||||||
| Total assets by segment: | ||||||||||||||||||||||||
| Total assets for reportable segments | 1,038,053 | 368,158 | 1,038,053 | 368,158 | 291,508 | |||||||||||||||||||
| PCB Test [Member] | ||||||||||||||||||||||||
| Net sales by segment: | ||||||||||||||||||||||||
| Net sales | 8,492 | |||||||||||||||||||||||
| Segment profit (loss) before tax: | ||||||||||||||||||||||||
| Profit (loss) for reportable segments | (5,154) | |||||||||||||||||||||||
| Depreciation and amortization by segment deducted in arriving at profit (loss): | ||||||||||||||||||||||||
| Depreciation | 214 | |||||||||||||||||||||||
| Capital expenditures | 10 | |||||||||||||||||||||||
| Total assets by segment: | ||||||||||||||||||||||||
| Total assets for reportable segments | 57,762 | 57,762 | ||||||||||||||||||||||
| Semiconductor Test and Inspection and PCB Test [Member] | ||||||||||||||||||||||||
| Total assets by segment: | ||||||||||||||||||||||||
| Total assets for reportable segments | $ 1,095,815 | $ 368,158 | $ 1,095,815 | $ 368,158 | $ 291,508 | |||||||||||||||||||
| ||||||||||||||||||||||||
| X | ||||||||||
- Definition The amount of profit (loss) from operating segments. No definition available.
|
| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount classified as assets attributable to disposal group held for sale or disposed of. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 9 - Segment and Geographic Information - Customers Comprising 10% of Consolidated Sales (Details) - Semiconductor Equipment [Member] - Sales Revenue, Net [Member] - Customer Concentration Risk [Member] |
12 Months Ended | |
|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
|
| Intel [Member] | ||
| Net sales percentage | 11.20% | 17.20% |
| NXP Semiconductors N.V. [Member] | ||
| Net sales percentage | 15.90% | 13.70% |
| X | ||||||||||
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 9 - Segment and Geographic Information - Summary of Net Sales to Customers, Attributed to Countries (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
[1],[2] | Sep. 29, 2018 |
[1],[2] | Jun. 30, 2018 |
[1],[2] | Mar. 31, 2018 |
[1],[2] | Dec. 30, 2017 |
[1],[2] | Sep. 30, 2017 |
[1] | Jul. 01, 2017 |
[1] | Apr. 01, 2017 |
[1] | Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
||||||
| Net sales | $ 170,637 | $ 86,164 | $ 99,817 | $ 95,150 | $ 84,090 | $ 93,651 | $ 93,866 | $ 81,097 | $ 451,768 | [1],[2] | $ 352,704 | $ 282,084 | ||||||||||||
| CHINA | ||||||||||||||||||||||||
| Net sales | 90,255 | 82,474 | 60,291 | |||||||||||||||||||||
| Malaysia [Member] | ||||||||||||||||||||||||
| Net sales | 61,793 | 80,102 | 85,956 | |||||||||||||||||||||
| UNITED STATES | ||||||||||||||||||||||||
| Net sales | 61,177 | 38,729 | 35,204 | |||||||||||||||||||||
| PHILIPPINES | ||||||||||||||||||||||||
| Net sales | 46,421 | 26,268 | 16,922 | |||||||||||||||||||||
| Rest of the World [Member] | ||||||||||||||||||||||||
| Net sales | $ 192,122 | $ 125,131 | $ 83,711 | |||||||||||||||||||||
| ||||||||||||||||||||||||
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 9 - Segment and Geographic Information - Summary of Property, Plant and Equipment and Other Long Lived Assets in Geographical Area (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| Property plant and equipment, net | $ 74,332 | $ 34,172 |
| Goodwill and other intangible assets | 561,088 | 82,361 |
| GERMANY | ||
| Property plant and equipment, net | 21,655 | 7,485 |
| Goodwill and other intangible assets | 249,605 | 30,546 |
| UNITED STATES | ||
| Property plant and equipment, net | 20,417 | 3,064 |
| Goodwill and other intangible assets | 228,022 | 17,242 |
| JAPAN | ||
| Property plant and equipment, net | 11,905 | 12,137 |
| Goodwill and other intangible assets | 4,138 | 4,491 |
| Malaysia [Member] | ||
| Property plant and equipment, net | 10,535 | 4,622 |
| Goodwill and other intangible assets | 43,569 | 7,078 |
| PHILIPPINES | ||
| Property plant and equipment, net | 5,842 | 5,808 |
| Rest of the World [Member] | ||
| Property plant and equipment, net | 3,978 | 1,056 |
| Goodwill and other intangible assets | 8,977 | 996 |
| SINGAPORE | ||
| Goodwill and other intangible assets | 15,173 | 6,558 |
| SWITZERLAND | ||
| Goodwill and other intangible assets | $ 11,604 | $ 15,450 |
| X | ||||||||||
- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. No definition available.
|
| X | ||||||||||
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 10 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Operating Leases, Rent Expense, Total | $ 4.8 | $ 3.6 | $ 4.4 |
| Capital Lease Obligations, Total | $ 1.4 | ||
| X | ||||||||||
- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
|
Note 10 - Commitments and Contingencies - Future Minimum Lease Payments (Details) $ in Thousands |
Dec. 29, 2018
USD ($)
|
[1] | ||
|---|---|---|---|---|
| 2019 | $ 7,879 | |||
| 2020 | 7,599 | |||
| 2021 | 5,056 | |||
| 2022 | 4,006 | |||
| 2023 | 3,562 | |||
| Thereafter | 11,211 | |||
| Total | $ 39,313 | |||
| ||||
| X | ||||||||||
- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 11 - Guarantees (Details Textual) - USD ($) $ in Millions |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| Non-current Other Accrued Liabilities [Member] | ||
| Product Warranty Accrual, Noncurrent | $ 0.2 | $ 0.6 |
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 11 - Guarantees - Changes in Accrued Warranty (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Beginning balance | $ 4,849 | $ 4,350 | $ 4,886 |
| Warranty accruals | 7,154 | 6,765 | 6,088 |
| Warranty payments | (8,358) | (6,316) | (6,624) |
| Warranty liability assumed | 4,369 | 50 | |
| Ending balance | $ 8,014 | $ 4,849 | $ 4,350 |
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in the standard and extended product warranty accrual from a business acquisition. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in the standard and extended product warranty accrual from warranties issued. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 12 - Discontinued Operations (Details Textual) - Broadcast Microwave Services, Inc. (“BMS”) [Member] $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 26, 2015
USD ($)
| |
| Proceeds from Divestiture of Businesses | $ 4.9 |
| Disposal Group, Including Discontinued Operation, Contingent Consideration | $ 2.5 |
| X | ||||||||||
- Definition Maximum amount of contingent consideration receivable for the disposal of assets and liabilities, including discontinued operation. No definition available.
|
| X | ||||||||||
- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 12 - Discontinued Operations - Balance Sheet Information for Fixture Services Business (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|---|
| Cash | $ 461 | ||
| Total current assets | 3,741 | ||
| Discontinued operations | 3,820 | ||
| Total current liabilities | 518 | ||
| Xcerra [Member] | Discontinued Operations, Held-for-sale [Member] | |||
| Cash | 461 | ||
| Accounts receivable, net | 1,718 | ||
| Inventories | 1,388 | ||
| Other current assets | 174 | ||
| Total current assets | 3,741 | ||
| Property, plant and equipment, net | 66 | ||
| Other noncurrent assets | 13 | ||
| Discontinued operations | 3,820 | ||
| Other accrued current liabilities | 518 | ||
| Total current liabilities | 518 | ||
| Total liabilities | $ 518 |
| X | ||||||||||
- Definition Amount classified as assets attributable to disposal group held for sale or disposed of. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as accrued liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of currency on hand, demand deposits with banks or financial institutions, and other kinds of accounts that have the general characteristics of demand deposits, held by a disposal group. No definition available.
|
| X | ||||||||||
- Definition Amount classified as inventory attributable to disposal group, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as other assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as other assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as liabilities attributable to disposal group held for sale or disposed of. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 12 - Discontinued Operations - Summary of Operating Results (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Income (loss), net of tax | $ 119 | $ (278) | $ (221) |
| Broadcast Microwave Services, Inc. (“BMS”) [Member] | |||
| Net sales | 1,593 | ||
| Operating income | 157 | ||
| Loss from sale of BMS | (278) | (221) | |
| Income (loss) before taxes | 157 | (278) | (221) |
| Income tax provision | 38 | ||
| Income (loss), net of tax | $ 119 | $ (278) | $ (221) |
| X | ||||||||||
- Definition Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 13 - Accumulated Other Comprehensive Loss - Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
Dec. 31, 2016 |
|
| Foreign currency translation adjustments, before tax | $ (8,905) | $ 11,345 | $ (5,789) | |
| Foreign currency translation adjustments, tax | ||||
| Foreign currency translation adjustments, net of tax | (8,905) | 11,345 | (5,789) | $ (5,789) |
| Adjustments related to postretirement benefits, before tax | 865 | (1,369) | (429) | |
| Adjustments related to postretirement benefits, tax | (60) | 121 | 113 | |
| Adjustments related to postretirement benefits, net of tax | 805 | (1,248) | (316) | (316) |
| Change in unrealized gain/loss on investments, before tax | 7 | (2) | (5) | |
| Change in unrealized gain/loss on investments, tax | ||||
| Change in unrealized gain/loss on investments, net of tax | 7 | (2) | (5) | $ (5) |
| Other comprehensive income (loss), before tax | (8,033) | 9,974 | (6,223) | |
| Other comprehensive income (loss), tax | (60) | 121 | 113 | |
| Other comprehensive income (loss), net of tax | $ (8,093) | $ 10,095 | $ (6,110) | |
| X | ||||||||||
- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive (income) loss for defined benefit plan, attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, on foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 13 - Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Thousands |
Dec. 29, 2018 |
Dec. 30, 2017 |
|---|---|---|
| Accumulated net currency translation adjustments | $ (22,676) | $ (13,771) |
| Accumulated net adjustments related to postretirement benefits | (3,204) | (4,009) |
| Accumulated net unrealized gain/loss on investments | (7) | |
| Total accumulated other comprehensive loss | $ (25,880) | $ (17,787) |
| X | ||||||||||
- Definition Accumulated unrealized gain (loss), after tax, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Note 14 - Related Party Transactions (Details Textual) $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 29, 2018
USD ($)
| |
| FTZ [Member] | |
| Related Party Transaction, Purchases from Related Party | $ 2,018,000 |
| ETZ [Member] | |
| Related Party Transaction, Purchases from Related Party | $ 0 |
| Blackrock [Member] | |
| Ownership Percentage of the Company | 14.60% |
| X | ||||||||||
- Definition The percentage of ownership of common stock or equity of the company. No definition available.
|
| X | ||||||||||
- Definition Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 15 - Quarterly Financial Data (Unaudited) (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
Sep. 29, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 30, 2017 |
Sep. 30, 2017 |
Jul. 01, 2017 |
Apr. 01, 2017 |
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
| Restructuring Charges, Total | $ 18,704 | ||||||||||
| Inventory Write-down | 9,400 | ||||||||||
| Amortization of Intangible Assets, Total | $ 11,600 | $ 600 | $ 700 | $ 700 | $ 700 | $ 700 | $ 600 | $ 700 | $ 17,197 | $ 4,208 | $ 6,903 |
| Xcerra [Member] | |||||||||||
| Restructuring Charges, Total | 37,800 | ||||||||||
| Inventory Write-down | 19,100 | ||||||||||
| Severance Costs | 17,800 | ||||||||||
| Other Restructuring Costs | 900 | ||||||||||
| Amortization of Intangible Assets, Total | $ 13,100 | ||||||||||
| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
Note 15 - Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
Sep. 29, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
[1] | Dec. 30, 2017 |
[1],[2] | Sep. 30, 2017 |
[1] | Jul. 01, 2017 |
[1] | Apr. 01, 2017 |
[1] | Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|||||||||||||||||
| Net sales | $ 170,637 | [1],[2] | $ 86,164 | [1],[2] | $ 99,817 | [1],[2] | $ 95,150 | [2] | $ 84,090 | $ 93,651 | $ 93,866 | $ 81,097 | $ 451,768 | [1],[2] | $ 352,704 | $ 282,084 | ||||||||||||||||
| Cost of sales (c): | 128,718 | [1],[2],[3] | 51,142 | [1],[2],[3] | 57,677 | [1],[2],[3] | 54,923 | [2],[3] | 48,993 | [3] | 56,065 | [3] | 56,166 | [3] | 48,073 | [3] | 292,460 | [1],[2],[3],[4] | 209,297 | [3],[4] | 182,086 | [4] | ||||||||||
| Income (loss) from continuing operations | (57,116) | [1],[2] | 4,803 | [1] | 11,648 | [1] | 8,122 | 6,895 | 8,755 | 10,708 | 6,763 | (32,543) | 33,121 | 3,260 | ||||||||||||||||||
| Net income (loss) | (56,997) | [1],[2] | 4,803 | [1] | 11,648 | [1] | 8,122 | 6,895 | 8,755 | 10,430 | 6,763 | (32,424) | 32,843 | 3,039 | ||||||||||||||||||
| Net income (loss) attributable to Cohu | $ (56,754) | [1],[2] | $ 4,803 | [1] | $ 11,648 | [1] | $ 8,122 | $ 6,895 | $ 8,755 | $ 10,430 | $ 6,763 | $ (32,181) | $ 32,843 | $ 3,039 | ||||||||||||||||||
| Income (loss) from continuing operations (in dollars per share) | $ (1.40) | [5] | $ 0.17 | [5] | $ 0.40 | [5] | $ 0.28 | [5] | $ 0.24 | [5] | $ 0.31 | [5] | $ 0.39 | [5] | $ 0.25 | [5] | $ (1.02) | [5] | $ 1.19 | [5] | $ 0.12 | |||||||||||
| Net income (loss) (in dollars per share) | (1.40) | [1],[5] | 0.17 | [1],[5] | 0.40 | [1],[5] | 0.28 | [5] | 0.24 | [5] | 0.31 | [5] | 0.38 | [5] | 0.25 | [5] | (1.01) | [5] | 1.18 | [5] | 0.11 | |||||||||||
| Income (loss) from continuing operations before non-controlling interest (in dollars per share) | (1.40) | [1],[2],[5] | 0.16 | [1],[5] | 0.39 | [1],[5] | 0.28 | [5] | 0.23 | [5] | 0.30 | [5] | 0.37 | [5] | 0.24 | [5] | (1.02) | [5] | 1.15 | [5] | 0.12 | |||||||||||
| Net income (loss) attributable to Cohu (in dollars per share) | $ (1.40) | [1],[2],[5] | $ 0.16 | [1],[5] | $ 0.39 | [1],[5] | $ 0.28 | [5] | $ 0.23 | [5] | $ 0.30 | [5] | $ 0.36 | [5] | $ 0.24 | [5] | $ (1.01) | [5] | $ 1.14 | [5] | $ 0.11 | |||||||||||
| ||||||||||||||||||||||||||||||||
| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
||||||
| SEC Schedule, 12-09, Allowance, Credit Loss [Member] | ||||||||
| Balance, beginning of year | $ 200 | $ 81 | $ 71 | |||||
| Additions (reductions) not charged to expense | (20) | 174 | (4) | [1] | ||||
| Additions (reduction) charged (credited) to expense | (109) | 6 | 13 | |||||
| Deductions/write-offs | 31 | 61 | (1) | |||||
| Balance, end of year | 40 | 200 | 81 | |||||
| SEC Schedule, 12-09, Reserve, Inventory [Member] | ||||||||
| Balance, beginning of year | 17,362 | 21,485 | 26,653 | |||||
| Additions (reductions) not charged to expense | (300) | (1,165) | 1,789 | [2] | ||||
| Additions (reduction) charged (credited) to expense | 10,783 | 1,148 | 1,125 | |||||
| Deductions/write-offs | 3,907 | 4,106 | 8,082 | |||||
| Balance, end of year | $ 23,938 | $ 17,362 | $ 21,485 | |||||
| ||||||||
| X | ||||||||||
- Definition Amount of increase (decrease) in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges (credits) to costs and expenses. No definition available.
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, not charged (credited) to costs and expenses. No definition available.
|
| X | ||||||||||
- Definition Amount of valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of decrease in valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|