Document And Entity Information - shares |
9 Months Ended | |
|---|---|---|
Sep. 24, 2016 |
Oct. 12, 2016 |
|
| Document Information [Line Items] | ||
| Entity Registrant Name | COHU INC | |
| Entity Central Index Key | 0000021535 | |
| Trading Symbol | cohu | |
| Current Fiscal Year End Date | --12-31 | |
| Entity Filer Category | Accelerated Filer | |
| Entity Current Reporting Status | Yes | |
| Entity Voluntary Filers | No | |
| Entity Well-known Seasoned Issuer | No | |
| Entity Common Stock, Shares Outstanding (in shares) | 26,711,690 | |
| Document Type | 10-Q | |
| Document Period End Date | Sep. 24, 2016 | |
| Document Fiscal Year Focus | 2016 | |
| Document Fiscal Period Focus | Q3 | |
| 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 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) or (5) Smaller Reporting 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. 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 "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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| X | ||||||||||
- 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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| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of items purchased for use as components of a finished product or pieces of machinery and equipment plus any items in their natural and unrefined state. This element may be used when the reporting entity combines raw materials and purchased parts into an aggregate amount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before accumulated deprecation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of current assets classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares |
Sep. 24, 2016 |
Dec. 26, 2015 |
[1] | ||
|---|---|---|---|---|---|
| Preferred stock, par value (in dollars per share) | $ 1 | $ 1 | |||
| Preferred stock, shares authorized (in shares) | 1,000,000 | 1,000,000 | |||
| Preferred stock, shares issued (in shares) | 0 | 0 | |||
| Common stock, par value (in dollars per share) | $ 1 | $ 1 | |||
| Common stock, shares authorized (in shares) | 60,000,000 | 60,000,000 | |||
| Common stock, shares issued (in shares) | 26,712,000 | 26,420,000 | |||
| Common stock, shares outstanding (in shares) | 26,712,000 | 26,420,000 | |||
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- Definition Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Net sales | $ 69,259 | $ 67,512 | $ 211,390 | $ 206,170 |
| Cost and expenses: | ||||
| Cost of sales | 46,038 | 44,718 | 142,044 | 137,529 |
| Research and development | 8,634 | 8,605 | 24,742 | 24,901 |
| Selling, general and administrative | 13,591 | 11,923 | 41,976 | 38,006 |
| Cost and expenses | 68,263 | 65,246 | 208,762 | 200,436 |
| Income from operations | 996 | 2,266 | 2,628 | 5,734 |
| Interest and other, net | 71 | 9 | 173 | 19 |
| Income from continuing operations before taxes | 1,067 | 2,275 | 2,801 | 5,753 |
| Income tax provision | 849 | 940 | 1,832 | 2,251 |
| Income from continuing operations | 218 | 1,335 | 969 | 3,502 |
| Income (loss) from discontinued operations | 51 | (222) | (4) | (5,201) |
| Net income (loss) | $ 269 | $ 1,113 | $ 965 | $ (1,699) |
| Basic: | ||||
| Income from continuing operations (in dollars per share) | $ 0.01 | $ 0.05 | $ 0.04 | $ 0.13 |
| Loss from discontinued operations (in dollars per share) | 0 | (0.01) | 0 | (0.20) |
| Net income (loss) (in dollars per share) | 0.01 | 0.04 | 0.04 | (0.07) |
| Diluted: | ||||
| Income from continuing operations (in dollars per share) | 0.01 | 0.05 | 0.04 | 0.13 |
| Loss from discontinued operations (in dollars per share) | 0 | (0.01) | 0 | (0.20) |
| Net income (loss) (in dollars per share) | $ 0.01 | $ 0.04 | $ 0.04 | $ (0.06) |
| Weighted average shares used in computing loss per share: | ||||
| Basic (in shares) | 26,761 | 26,175 | 26,596 | 25,995 |
| Diluted (in shares) | 27,367 | 26,796 | 27,356 | 26,679 |
| Cash dividends declared per share (in dollars per share) | $ 0.06 | $ 0.06 | $ 0.18 | $ 0.18 |
| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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/presentationRef
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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/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. 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://www.xbrl.org/2003/role/presentationRef
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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/presentationRef
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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/presentationRef
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| X | ||||||||||
- Definition The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business). No definition available.
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| 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/presentationRef
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| 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://www.xbrl.org/2003/role/presentationRef
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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Net income (loss) | $ 269 | $ 1,113 | $ 965 | $ (1,699) |
| Other comprehensive income (loss), net of tax: | ||||
| Foreign currency translation adjustments | 561 | (4,221) | 2,724 | (9,754) |
| Adjustments related to postretirement benefits | (2) | 99 | (35) | (33) |
| Change in unrealized gain/loss on investments | (3) | (1) | ||
| Other comprehensive income (loss), net of tax | 556 | (4,122) | 2,688 | (9,787) |
| Comprehensive income (loss) | $ 825 | $ (3,009) | $ 3,653 | $ (11,486) |
| 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://www.xbrl.org/2003/role/presentationRef
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| 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/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands |
9 Months Ended | ||||
|---|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
||||
| Cash flows from operating activities: | |||||
| Net income (loss) | $ 965 | $ (1,699) | |||
| Reconciliation of net income (loss) to net cash provided by operating activities: | |||||
| Loss on disposal of assets | 37 | ||||
| Loss on disposal of microwave communications equipment business | 4 | 3,232 | |||
| Operating cash flows of discontinued operations | (1,039) | ||||
| Depreciation and amortization | 8,089 | 8,533 | |||
| Share-based compensation expense | 5,276 | 5,081 | |||
| Deferred income taxes | (1,111) | (1,086) | |||
| Asset impairment charge | 279 | ||||
| Changes in other accrued liabilities | 716 | 1,624 | |||
| Changes in other assets | (32) | (522) | |||
| Changes in current assets and liabilities, excluding effects from divestitures: | |||||
| Accounts receivable | 3,073 | 12,860 | |||
| Inventories | 3,551 | (5,273) | |||
| Other current assets | (411) | 2,891 | |||
| Accounts payable | (2,109) | 2,219 | |||
| Deferred profit | 1,970 | (1,127) | |||
| Income taxes payable | (2,451) | 1,804 | |||
| Accrued compensation, warranty and other liabilities | 980 | (3,217) | |||
| Net cash provided by operating activities | 18,547 | 24,560 | |||
| Cash flows from investing activities, excluding effects from divestitures: | |||||
| Purchases of short-term investments | (31,453) | (453) | |||
| Sales and maturities of short-term investments | 13,654 | 155 | |||
| Purchases of property, plant and equipment | (2,797) | (3,687) | |||
| Cash received from sale of facility and fixed assets | 852 | ||||
| Cash received from sale of microwave communications equipment business | 5,339 | ||||
| Investing cash flows of discontinued operations | (74) | ||||
| Net cash provided by (used in) investing activities | (19,744) | 1,280 | |||
| Cash flows from financing activities: | |||||
| Cash dividends paid | (4,748) | (4,648) | |||
| Issuance (repurchases) of common stock, net | (1,325) | 201 | |||
| Net cash used in financing activities | (6,073) | (4,447) | |||
| Effect of exchange rate changes on cash and cash equivalents | 1,117 | (3,018) | |||
| Net increase (decrease) in cash and cash equivalents | (6,153) | 18,375 | |||
| Cash and cash equivalents at beginning of period | 115,370 | [1] | 70,885 | ||
| Cash and cash equivalents at end of period | 109,217 | 89,260 | |||
| Supplemental disclosure of cash flow information: | |||||
| Cash paid (refunded) for income taxes | 5,977 | (414) | |||
| Inventory capitalized as property, plant and equipment | 201 | 220 | |||
| Dividends declared but not yet paid | 1,603 | 1,567 | |||
| Capitalized facility under build-to-suit lease | $ 682 | ||||
| |||||
| X | ||||||||||
- Definition Represents information about inventory capitalized as property, plant and equipment. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The increase during the period in capital lease obligations due to entering into new capital leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
|
| 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| 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/presentationRef
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| X | ||||||||||
- Definition Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
|
| 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. No definition available.
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The increase (decrease) during the reporting period, excluding the portion taken into income, in the liability reflecting revenue yet to be earned for which cash or other forms of consideration was received or recorded as a receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in noncurrent assets classified as other. No definition available.
|
| X | ||||||||||
- Definition Amount of increase (decrease) in operating assets classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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/presentationRef
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| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of cash inflow (outflow) from investing activities, including 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
|
| 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/presentationRef
|
| X | ||||||||||
- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The net cash inflow or outflow resulting from the entity's share transaction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities. No definition available.
|
| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
|
Note 1 - Summary of Significant Accounting Policies |
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Sep. 24, 2016 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes to Financial Statements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Significant Accounting Policies [Text Block] | 1. Summary of Significant Accounting Policies Basis of Presentation Our fiscal years are based on a 52- or 53-week period ending on the last Saturday in December. The condensed consolidated balance sheet at December 26, 2015 has been derived from our audited financial statements at that date. The interim condensed consolidated financial statements as of September 24, 2016 (also referred to as “the third quarter of fiscal 2016” and “the first nine months of fiscal 2016”) and September 26, 2015 (also referred to as “the third quarter of fiscal 2015” and “the first nine months of fiscal 2015”) are unaudited. However, in management’s opinion, these financial statements reflect all adjustments (consisting only of normal, recurring items) necessary to provide a fair presentation of our financial position, results of operations and cash flows for the periods presented. The three- and nine-month periods ended September 24, 2016 and September 26, 2015 were each comprised of 13 and 39 weeks, respectively. Our interim results are not necessarily indicative of the results that should be expected for the full year. For a better understanding of Cohu, Inc. and our financial statements, we recommend reading these interim condensed consolidated financial statements in conjunction with our audited financial statements for the year ended December 26, 2015, which are included in our 2015 Annual Report on Form 10-K, filed with the U. S. Securities and Exchange Commission (“SEC”). In the following notes to our interim condensed consolidated financial statements, Cohu, Inc. is referred to as “Cohu”, “we”, “our” and “us”. Discontinued Operations In June 2015, we sold our microwave communications equipment segment, Broadcast Microwave Services, Inc. (“BMS”). The operating results of BMS are being presented as discontinued operations and all prior period amounts have been reclassified accordingly. See Note 2, “Discontinued Operations” for additional information. Unless otherwise indicated, all amounts herein relate to continuing operations. 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 $0.1 million at both September 24, 2016 and December 26, 2015. Our customers include semiconductor manufacturers and semiconductor test subcontractors throughout many areas of the world. While we believe that our allowance for doubtful accounts is adequate and represents our best estimate at September 24, 2016, we will continue to monitor customer liquidity and other economic conditions, which may result in changes to our estimates regarding collectability. 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. Based on the provisions of ASC 280, we have determined that our identified 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 one segment, semiconductor equipment and the financial information disclosed herein materially represents all of the financial information related to our semiconductor equipment segment.Goodwill, Other Intangible Assets and Long-lived Assets We evaluate goodwill for impairment annually on October 1 st of each year and when an event occurs or circumstances change that indicate that the carrying value may not be recoverable. As a part of our annual assessment process for 2015 we performed a qualitative assessment to determine whether current events or changes in circumstances lead us to a determination that it is more likely than not (defined as a likelihood of more than 50 percent) that the fair value of our reporting unit is less than its carrying amount. Under this approach, absent a qualitative determination that the fair value of our reporting unit is more likely than not to be less than its carrying value, we do not need to proceed to the traditional estimated fair value test for that asset, which would involve comparing the book value of net assets to the fair value of our identified reporting unit. As of October 1, 2015, the results of our qualitative assessment indicated there was no impairment. 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 asset’s carrying amount and estimated fair value. Foreign 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. 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. During the three and nine months ended September 24, 2016, we recognized foreign exchange losses of $0.3 million and $1.0 million in our consolidated statements of operations, respectively. During the three and nine months ended September 26, 2015, we recognized approximately $1.5 million and $1.1 million of foreign exchange gains in our consolidated statements of operations, respectively. Cumulative translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity. 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), future forfeitures 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. Reported share-based compensation is classified, in the condensed consolidated interim financial statements, as follows (in thousands) :
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 three and nine months ended September 24, 2016, options to issue approximately 707,000 and 752,000 shares of common stock were excluded from the computation, respectively. For the three and nine months ended September 26, 2015, options to issue approximately 857,000 and 912,000 shares of common stock were excluded from the computation, respectively. The following table reconciles the denominators used in computing basic and diluted income (loss) per share ( in thousands) :
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. 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 there is persuasive evidence of an arrangement, title and risk of loss have passed, delivery has occurred or the services have been rendered, the sales price is fixed or determinable and collection of the related receivable is reasonably assured. Title and risk of loss generally pass to our customers upon shipment. In circumstances where either title or risk of loss pass upon destination or acceptance, we defer revenue recognition until such events occur. Revenue for established products that have previously satisfied a customer’s acceptance requirements and provide for full payment tied to shipment is generally recognized upon shipment and passage of title. In certain instances, customer payment terms may provide that a minority portion (e.g. up to 20%) of the equipment purchase price be paid only upon customer acceptance. In those situations, the majority portion (e.g. 80%) of revenue where the contingent payment is tied to shipment and the entire product cost of sale are recognized upon shipment and passage of title and the minority portion of the purchase price related to customer acceptance is deferred and recognized upon receipt of customer acceptance. 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 is 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 ratably over the period of the related contract or upon completion of the services if they are short-term in nature. Spares and kit revenue is generally recognized upon shipment. Certain of our equipment sales are accounted for as multiple-element arrangements. A multiple-element arrangement is a transaction which may involve the delivery or performance of multiple products, services, or rights to use assets, and performance may occur at different points in time or over different periods of time. For arrangements containing multiple elements, the revenue relating to the undelivered elements is deferred using the relative selling price method utilizing estimated sales prices until delivery of the deferred elements. We limit the amount of revenue recognition for delivered elements to the amount that is not contingent on the future delivery of products or services, future performance obligations or subject to customer-specified return or adjustment. 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. At September 24, 2016, we had deferred revenue totaling approximately $6.4 million and deferred profit of $5.7 million. At December 26, 2015, we had deferred revenue totaling approximately $5.0 million and deferred profit of $3.7 million. The periodic increase is primarily a result of deferrals of revenue associated with product shipments made to our customers in accordance with our revenue recognition policy. A small number of customers historically have been responsible for a significant portion of our net sales. Significant customer concentration information is as follows:
Comprehensive Loss Our accumulated other comprehensive loss balance totaled approximately $19.1 million and $21.8 million at September 24, 2016 and December 26, 2015, respectively, and was attributed to all non-owner changes in stockholders’ equity and consists of, on an after-tax basis where applicable, foreign currency adjustments resulting from the translation of certain of our subsidiary accounts where the functional currency is not the U.S. Dollar and adjustments related to postretirement benefits. Reclassification adjustments from accumulated other comprehensive income during the first nine months of fiscal 2016 and 2015 were not significant. Retiree Medical Benefits We provide post-retirement health benefits to certain executives and directors under a noncontributory plan. The net periodic benefit cost incurred during the first nine months of fiscal 2016 and 2015 was not significant. Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements – In the first quarter of 2016 we adopted Accounting Standards Update (“ASU”) No. 2015-16 “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments” (ASU 2015-16). ASU 2015-16 requires an entity to: recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined; record, in the same period's financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date; and present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The adoption of this authoritative guidance did not impact on our condensed consolidated financial statements.Recently Issued Accounting Pronouncements – On March 31, 2016, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2016-09, “Compensation – Stock Compensation” (Topic 718). The FASB issued this update to improve the accounting for employee share-based payments. It affects all organizations that issue share-based payment awards to their employees. Several aspects of the accounting for share-based payment award transactions are simplified, including: (a) income tax consequences; (b) classification of awards as either equity or liabilities; and (c) classification on the statement of cash flows. The updated guidance is effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years, with early adoption permitted. We are currently evaluating potential early adoption of this standard during fiscal 2016, but do not expect the adoption of this standard to have a material effect on our Consolidated Statements of Operations or Consolidated Balance Sheets.In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842)”, which requires lessees to record most leases on their balance sheets. The new standard states that a lessee will recognize a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term. Expense related to leases determined to be operating leases will be recognized on a straight-line basis, while those determined to be financing leases will be recognized following a front-loaded expense profile in which interest and amortization are presented separately in the income statement. The standard is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. The new guidance must be adopted using a modified retrospective transition, and provides for certain practical expedients. We are currently evaluating the impact of this new standard on our financial reporting, but recognizing the lease liabilities and related right-of-use assets will impact our balance sheet. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Liabilities”, which amends the guidance on the classification and measurement of financial instruments. The changes primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. Under the new guidance, equity investments in unconsolidated entities that are not accounted for under the equity method will generally be measured at fair value through earnings. When the fair value option has been elected for financial liabilities, changes in fair value due to instrument-specific credit risk will be recognized separately in other comprehensive income. The guidance is effective for interim and annual periods beginning after December 15, 2017. We are currently evaluating the impact that the new guidance will have on our consolidated financial statements. In July 2015, the FASB issued ASU 2015-11 “Simplifying the Measurement of Inventory”. ASU 2015-11 simplifies the guidance on the subsequent measurement of inventory, excluding inventory measured using last-in, first out or the retail inventory method. Under the new standard, in scope inventory should be measured at the lower of cost and net realizable value. The standard is effective for interim and annual periods beginning after December 15, 2016, with early adoption permitted. We are evaluating the impact of the new standard on our consolidated financial statements and our timing for adoption. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements - Going Concern, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”. This standard sets forth management’s responsibility to evaluate, at each reporting period, whether there is substantial doubt about an entity’s ability to continue as a going concern, and if so, to provide related footnote disclosures. The standard is effective for interim and annual periods ending after December 15, 2016. The Company does not believe that the adoption of this guidance will have any material impact on its financial position or results of operations. In May 2014, the FASB issued new guidance on revenue from contracts with customers. The amended guidance outlines a single comprehensive revenue model for entities to use in accounting for revenue arising from contracts with customers. The guidance supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that “an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.” Entities have the option of using either a full retrospective or modified approach to adopt the guidance. This guidance is effective for fiscal years, and interim reporting periods within those years, beginning after December 15, 2016. In April 2015, the FASB agreed to propose a one-year deferral of the revenue recognition standard's effective date for all entities, which would change the effectiveness to annual reporting periods beginning after December 15, 2017, with the option to adopt as early as December 15, 2016. We expect to adopt the provisions of this new accounting standard at the beginning of fiscal year 2018 and we are evaluating the impact of the new guidance on our financial statements and have not yet determined which transition method we will utilize upon adoption or the potential impact of this new guidance on our consolidated financial statements. |
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- References No definition available.
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- Definition The entire disclosure for all significant accounting policies of the reporting entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Note 2 - Discontinued Operations |
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| Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] |
In June 2015, we sold all of the outstanding stock of 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 it was no longer a strategic fit within our organization. As part of the divestiture of BMS at June 27, 2015, we recorded a long-term contingent consideration receivable that has been classified as Level 3 in the fair value hierarchy. See Note 4, “Financial Instruments Measured at Fair Value” for additional information on the three-tier fair value hierarchy. The contingent consideration represents the estimated fair value of future payments we are due based on BMS achieving annual revenue targets in certain years as specified in the sale agreement. The periodic fair value of the contingent consideration is determined through the use of the Monte Carlo simulation model. We adjusted the value of the contingent consideration receivable to $0.5 million at September 24, 2016 , based on updated revenue forecasts received from BMS. The change in the fair value was recognized in discontinued operations below. In connection with the disposal of BMS we incurred divestiture-related costs in the first quarter of 2015 that would not have been incurred otherwise. These costs consist of legal and investment banking advisory services, success based compensation arrangements and certain other items that are incremental to normal operating charges and were expensed as incurred. These costs are included in the loss from sale amount presented below. Operating results of our discontinued segment are summarized as follows (in thousands) :
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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://www.xbrl.org/2003/role/presentationRef
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Note 3 - Goodwill and Other Purchased Intangible Assets |
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| Goodwill and Intangible Assets Disclosure [Text Block] |
Changes in the carrying value of goodwill during the year ended December 26, 2015 and the nine-month period ended September 24, 2016 were as follows ( in thousands ):
Purchased intangible assets, subject to amortization are as follows ( in thousands ):
Amortization expense related to intangible assets was approximately $1.8 million in the third quarter of fiscal 2016 and $5.4 million in the first nine months of fiscal 2016. Amortization expense related to intangible assets was approximately $1.7 million in the third quarter of fiscal 2015 and $5.3 million in the first nine months of fiscal 2015. Changes in the carrying values of these intangible assets are a result of the impact of fluctuations in currency exchange rates. |
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- References No definition available.
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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Note 4 - Financial Instruments Measured at Fair Value |
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| Fair Value, Measurement Inputs, Disclosure [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 are as follows (in thousands) :
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, and they are included in Level 2. 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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- References No definition available.
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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://www.xbrl.org/2003/role/presentationRef
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Note 5 - Employee Stock Benefit Plans |
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Sep. 24, 2016 | |||
| Notes to Financial Statements | |||
| Disclosure of Compensation Related Costs, Share-based Payments [Text Block] |
Our 2005 Equity Incentive Plan (the “2005 Plan”) is a broad-based, long-term retention program intended to attract, motivate, and retain talented employees as well as align stockholder and employee interests. Awards that may be granted under the program include, but are not limited to, non-qualified and incentive stock options, restricted stock units, and performance stock units. We settle employee stock option exercises, employee stock purchase plan purchases, and the vesting of restricted stock units, and performance stock units with newly issued common shares. At September 24, 2016, there were 1,815,471 shares available for future equity grants under the 2005 Equity Incentive Plan. Stock Options Stock options may be granted to employees, consultants and directors to purchase a fixed number of shares of our common stock. The exercise prices of options granted are at least equal to the fair market value of our common stock on the dates of grant and options vest and become exercisable in annual increments that range from one to four years from the date of grant. Stock options granted under the 2015 Plan have a maximum contractual term of ten years. In the first nine months of fiscal 2016 we did not grant any stock options and we issued 32,555 shares of our common stock on the exercise of options that were granted previously. At September 24, 2016, we had 1,730,496 stock options outstanding. These options had a weighted-average exercise price of $10.71 per share, an aggregate intrinsic value of approximately $3.1 million and the weighted average remaining contractual term was approximately 4.1 years. At September 24, 2016, we had 1,617,819 stock options outstanding that were exercisable. These options had a weighted-average exercise price of $10.78 per share, an aggregate intrinsic value of $2.9 million and the weighted average remaining contractual term was approximately 3.9 years. Restricted Stock Units We grant restricted stock units (“RSUs”) to certain employees, consultants and outside directors. RSUs vest in annual increments that range from one to four years from the date of grant. Prior to vesting, RSUs 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 RSUs 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 RSUs outstanding at September 24, 2016. In the first nine months of fiscal 2016 we awarded 471,225 RSUs and we issued 396,225 shares of our common stock on vesting of previously granted awards. At September 24, 2016, we had 1,115,355 restricted stock units outstanding with an aggregate intrinsic value of approximately $12.9 million and the weighted average remaining vesting period was approximately 2.3 years. Performance Stock Units We also grant performance stock units (“PSUs”) to senior executives as a part of our long-term equity compensation program. The number of shares of common stock that will ultimately be issued to settle PSUs granted in 2016 ranges from 25% to 200% and is determined based on certain performance criteria over a three-year measurement period. For PSUs granted in 2015, the number of shares of common stock issued to settle PSUs granted is determined based on a two-year measurement period. The performance criteria for the PSUs are based on a combination of the Company’s annualized Total Shareholder Return (“TSR”) for the performance period and the relative performance of the Company’s TSR compared with the annualized TSR of certain peer companies for the performance period. PSUs granted in 2016 vest 100% on the third anniversary of their grant and PSUs granted in 2015 vest 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 ratably 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 outstanding at September 24, 2016. In the first nine months of fiscal 2016 , we awarded 222,316 PSUs and we issued 172,053 shares of our common stock on vesting of previously granted awards. A t September 24, 2016, we had 403,738 PSUs outstanding with an aggregate intrinsic value of approximately $4.7 million and the weighted average remaining vesting period was approximately 1.5 years. Employee Stock Purchase Plan (ESPP) The Cohu, Inc. 1997 Employee Stock Purchase Plan (“the Plan”) provides for the issuance of shares of our common stock. Under the Plan, eligible employees may purchase shares of Cohu common stock through payroll deductions at a price equal to 85 percent of the lower of the fair market value of Cohu common stock at the beginning or end of each 6-month purchase period, subject to certain limits. During the first nine months of fiscal 2016, 56,288 shares of our common stock were sold to our employees under the Plan leaving 754,775 shares available for future issuance. |
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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://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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Note 6 - Income Taxes |
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| Notes to Financial Statements | |||
| Income Tax Disclosure [Text Block] |
Ordinarily, interim tax provisions are calculated using the estimated effective tax rate (“ETR”) expected to be applicable for the full fiscal year. However, when a reliable estimate of the annual ETR cannot be made, the actual ETR for the year-to-date period may be the best estimate of the annual ETR. For the three and nine months ended September 24, 2016 and September 26, 2015, we used the actual year-to-date ETR in computing our tax provision, as a reliable estimate of the annual ETR cannot be made, since relatively small changes in our projected income produce a significant variation in our ETR. The actual year-to-date ETR on income from continuing operations for the three months ended September 24, 2016 and September 26, 2015 , was 79.6% and 41.3%, respectively. The actual year-to-date ETR on income from continuing operations for the nine months ended September 24, 2016 and September 26, 2015 , was 65.4% and 39.1%, respectively. The tax provision on income from continuing operations in 2016 and 2015 differs from the U.S. federal statutory rate primarily due to the lack of a benefit on our domestic losses as a result of our valuation allowance on deferred tax assets, foreign income taxed at lower rates, changes in our deferred tax asset valuation allowance, state taxes and interest related to unrecognized tax benefits. As of September 24, 2016, $65.9 million of our cash and cash equivalents and short term-investments was held by our foreign subsidiaries. If these funds are needed for our operations in the U.S., we may be required to accrue and pay U.S. taxes if we repatriate these funds. We repatriated approximately $17 million from our Singapore subsidiary in 2016 due to the reduction in business activity of that operation. This repatriation did not result in incremental U.S. taxes due to previously taxed income, loss carryforwards and a full valuation allowance against our domestic deferred tax assets. Our intent is to continue to indefinitely reinvest the remaining funds in our foreign operations and we have no current plans that would require us to repatriate these funds to the U.S. Other than foreign currency exchange rate changes, there was no material change to our unrecognized tax benefits and related accrued interest and penalties during the three- and nine-month periods ended September 24, 2016 and September 26, 2015. |
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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://www.xbrl.org/2003/role/presentationRef
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Note 7 - Contingencies |
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| Contingencies Disclosure [Text Block] |
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, we do not believe at the present time 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://www.xbrl.org/2003/role/presentationRef
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Note 8 - Guarantees and Other Obligations |
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| Commitments Contingencies and Guarantees [Text Block] |
Product Warranty Our products are generally sold with warranty periods that range from 12 to 36 months following sale or acceptance. Parts and labor are covered under the terms of the warranty agreement. The warranty provision is based on historical and projected experience by product and configuration. Changes in accrued warranty were as follows ( in thousands ):
Accrued warranty amounts expected to be incurred after one year are included in noncurrent other accrued liabilities in the condensed consolidated balance sheet. These amounts total $1.3 million at September 24, 2016 and $1.1 million at December 26, 2015. Standby Letters of Credit During the ordinary course of business, we provide standby letters of credit instruments to certain parties as required. As of September 24, 2016, no amounts were outstanding under standby lines of credit. Lines of Credit One of our wholly owned subsidiaries has two available lines of credit which provide it with borrowings of up to a total of 2.5 million Swiss Francs. At September 24, 2016 and December 26, 2015, no amounts were outstanding under the lines of credit. |
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- Definition The entire disclosure for commitments, contingencies, and guarantees. 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 Our fiscal years are based on a 52- or 53-week period ending on the last Saturday in December. The condensed consolidated balance sheet at December 26, 2015 has been derived from our audited financial statements at that date. The interim condensed consolidated financial statements as of September 24, 2016 (also referred to as “the third quarter of fiscal 2016” and “the first nine months of fiscal 2016”) and September 26, 2015 (also referred to as “the third quarter of fiscal 2015” and “the first nine months of fiscal 2015”) are unaudited. However, in management’s opinion, these financial statements reflect all adjustments (consisting only of normal, recurring items) necessary to provide a fair presentation of our financial position, results of operations and cash flows for the periods presented. The three- and nine-month periods ended September 24, 2016 and September 26, 2015 were each comprised of 13 and 39 weeks, respectively. Our interim results are not necessarily indicative of the results that should be expected for the full year. For a better understanding of Cohu, Inc. and our financial statements, we recommend reading these interim condensed consolidated financial statements in conjunction with our audited financial statements for the year ended December 26, 2015, which are included in our 2015 Annual Report on Form 10-K, filed with the U. S. Securities and Exchange Commission (“SEC”). In the following notes to our interim condensed consolidated financial statements, Cohu, Inc. is referred to as “Cohu”, “we”, “our” and “us”. |
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| Discontinued Operations, Policy [Policy Text Block] | Discontinued Operations In June 2015, we sold our microwave communications equipment segment, Broadcast Microwave Services, Inc. (“BMS”). The operating results of BMS are being presented as discontinued operations and all prior period amounts have been reclassified accordingly. See Note 2, “Discontinued Operations” for additional information. Unless otherwise indicated, all amounts herein relate to continuing operations. |
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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 $0.1 million at both September 24, 2016 and December 26, 2015. Our customers include semiconductor manufacturers and semiconductor test subcontractors throughout many areas of the world. While we believe that our allowance for doubtful accounts is adequate and represents our best estimate at September 24, 2016, 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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| 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. Based on the provisions of ASC 280, we have determined that our identified 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 one segment, semiconductor equipment and the financial information disclosed herein materially represents all of the financial information related to our semiconductor equipment segment. |
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| Goodwill and Intangible Assets, Policy [Policy Text Block] | Goodwill, Other Intangible Assets and Long-lived Assets We evaluate goodwill for impairment annually on October 1 st of each year and when an event occurs or circumstances change that indicate that the carrying value may not be recoverable. As a part of our annual assessment process for 2015 we performed a qualitative assessment to determine whether current events or changes in circumstances lead us to a determination that it is more likely than not (defined as a likelihood of more than 50 percent) that the fair value of our reporting unit is less than its carrying amount. Under this approach, absent a qualitative determination that the fair value of our reporting unit is more likely than not to be less than its carrying value, we do not need to proceed to the traditional estimated fair value test for that asset, which would involve comparing the book value of net assets to the fair value of our identified reporting unit. As of October 1, 2015, the results of our qualitative assessment indicated there was no impairment. 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 asset’s carrying amount and estimated fair value. |
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| Foreign Currency Transactions and Translations Policy [Policy Text Block] | Foreign 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. 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. During the three and nine months ended September 24, 2016, we recognized foreign exchange losses of $0.3 million and $1.0 million in our consolidated statements of operations, respectively. During the three and nine months ended September 26, 2015, we recognized approximately $1.5 million and $1.1 million of foreign exchange gains in our consolidated statements of operations, respectively. Cumulative translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity. |
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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), future forfeitures 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. Reported share-based compensation is classified, in the condensed consolidated interim financial statements, as follows (in thousands) :
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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 three and nine months ended September 24, 2016, options to issue approximately 707,000 and 752,000 shares of common stock were excluded from the computation, respectively. For the three and nine months ended September 26, 2015, options to issue approximately 857,000 and 912,000 shares of common stock were excluded from the computation, respectively. The following table reconciles the denominators used in computing basic and diluted income (loss) per share ( in thousands) :
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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| 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 there is persuasive evidence of an arrangement, title and risk of loss have passed, delivery has occurred or the services have been rendered, the sales price is fixed or determinable and collection of the related receivable is reasonably assured. Title and risk of loss generally pass to our customers upon shipment. In circumstances where either title or risk of loss pass upon destination or acceptance, we defer revenue recognition until such events occur. Revenue for established products that have previously satisfied a customer’s acceptance requirements and provide for full payment tied to shipment is generally recognized upon shipment and passage of title. In certain instances, customer payment terms may provide that a minority portion (e.g. up to 20%) of the equipment purchase price be paid only upon customer acceptance. In those situations, the majority portion (e.g. 80%) of revenue where the contingent payment is tied to shipment and the entire product cost of sale are recognized upon shipment and passage of title and the minority portion of the purchase price related to customer acceptance is deferred and recognized upon receipt of customer acceptance. 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 is 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 ratably over the period of the related contract or upon completion of the services if they are short-term in nature. Spares and kit revenue is generally recognized upon shipment. Certain of our equipment sales are accounted for as multiple-element arrangements. A multiple-element arrangement is a transaction which may involve the delivery or performance of multiple products, services, or rights to use assets, and performance may occur at different points in time or over different periods of time. For arrangements containing multiple elements, the revenue relating to the undelivered elements is deferred using the relative selling price method utilizing estimated sales prices until delivery of the deferred elements. We limit the amount of revenue recognition for delivered elements to the amount that is not contingent on the future delivery of products or services, future performance obligations or subject to customer-specified return or adjustment. 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. At September 24, 2016, we had deferred revenue totaling approximately $6.4 million and deferred profit of $5.7 million. At December 26, 2015, we had deferred revenue totaling approximately $5.0 million and deferred profit of $3.7 million. The periodic increase is primarily a result of deferrals of revenue associated with product shipments made to our customers in accordance with our revenue recognition policy. A small number of customers historically have been responsible for a significant portion of our net sales. Significant customer concentration information is as follows:
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| Comprehensive Income, Policy [Policy Text Block] | Comprehensive Loss Our accumulated other comprehensive loss balance totaled approximately $19.1 million and $21.8 million at September 24, 2016 and December 26, 2015, respectively, and was attributed to all non-owner changes in stockholders’ equity and consists of, on an after-tax basis where applicable, foreign currency adjustments resulting from the translation of certain of our subsidiary accounts where the functional currency is not the U.S. Dollar and adjustments related to postretirement benefits. Reclassification adjustments from accumulated other comprehensive income during the first nine months of fiscal 2016 and 2015 were not significant. |
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| Pension and Other Postretirement Plans, Policy [Policy Text Block] | Retiree Medical Benefits We provide post-retirement health benefits to certain executives and directors under a noncontributory plan. The net periodic benefit cost incurred during the first nine months of fiscal 2016 and 2015 was not significant. |
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| New Accounting Pronouncements, Policy [Policy Text Block] | Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements – In the first quarter of 2016 we adopted Accounting Standards Update (“ASU”) No. 2015-16 “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments” (ASU 2015-16). ASU 2015-16 requires an entity to: recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined; record, in the same period's financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date; and present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The adoption of this authoritative guidance did not impact on our condensed consolidated financial statements.Recently Issued Accounting Pronouncements – On March 31, 2016, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2016-09, “Compensation – Stock Compensation” (Topic 718). The FASB issued this update to improve the accounting for employee share-based payments. It affects all organizations that issue share-based payment awards to their employees. Several aspects of the accounting for share-based payment award transactions are simplified, including: (a) income tax consequences; (b) classification of awards as either equity or liabilities; and (c) classification on the statement of cash flows. The updated guidance is effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years, with early adoption permitted. We are currently evaluating potential early adoption of this standard during fiscal 2016, but do not expect the adoption of this standard to have a material effect on our Consolidated Statements of Operations or Consolidated Balance Sheets.In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842)”, which requires lessees to record most leases on their balance sheets. The new standard states that a lessee will recognize a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term. Expense related to leases determined to be operating leases will be recognized on a straight-line basis, while those determined to be financing leases will be recognized following a front-loaded expense profile in which interest and amortization are presented separately in the income statement. The standard is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. The new guidance must be adopted using a modified retrospective transition, and provides for certain practical expedients. We are currently evaluating the impact of this new standard on our financial reporting, but recognizing the lease liabilities and related right-of-use assets will impact our balance sheet. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Liabilities”, which amends the guidance on the classification and measurement of financial instruments. The changes primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. Under the new guidance, equity investments in unconsolidated entities that are not accounted for under the equity method will generally be measured at fair value through earnings. When the fair value option has been elected for financial liabilities, changes in fair value due to instrument-specific credit risk will be recognized separately in other comprehensive income. The guidance is effective for interim and annual periods beginning after December 15, 2017. We are currently evaluating the impact that the new guidance will have on our consolidated financial statements. In July 2015, the FASB issued ASU 2015-11 “Simplifying the Measurement of Inventory”. ASU 2015-11 simplifies the guidance on the subsequent measurement of inventory, excluding inventory measured using last-in, first out or the retail inventory method. Under the new standard, in scope inventory should be measured at the lower of cost and net realizable value. The standard is effective for interim and annual periods beginning after December 15, 2016, with early adoption permitted. We are evaluating the impact of the new standard on our consolidated financial statements and our timing for adoption. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements - Going Concern, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”. This standard sets forth management’s responsibility to evaluate, at each reporting period, whether there is substantial doubt about an entity’s ability to continue as a going concern, and if so, to provide related footnote disclosures. The standard is effective for interim and annual periods ending after December 15, 2016. The Company does not believe that the adoption of this guidance will have any material impact on its financial position or results of operations. In May 2014, the FASB issued new guidance on revenue from contracts with customers. The amended guidance outlines a single comprehensive revenue model for entities to use in accounting for revenue arising from contracts with customers. The guidance supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that “an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.” Entities have the option of using either a full retrospective or modified approach to adopt the guidance. This guidance is effective for fiscal years, and interim reporting periods within those years, beginning after December 15, 2016. In April 2015, the FASB agreed to propose a one-year deferral of the revenue recognition standard's effective date for all entities, which would change the effectiveness to annual reporting periods beginning after December 15, 2017, with the option to adopt as early as December 15, 2016. We expect to adopt the provisions of this new accounting standard at the beginning of fiscal year 2018 and we are evaluating the impact of the new guidance on our financial statements and have not yet determined which transition method we will utilize upon adoption or the potential impact of this new guidance on our consolidated financial statements. |
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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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- Definition Disclosure of accounting policy for comprehensive income. No definition available.
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- Definition Disclosure of accounting policy for credit risk. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- 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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- Definition Disclosure of accounting policy for pension and other postretirement benefit plans. This accounting policy may address (1) the types of plans sponsored by the entity, and the benefits provided by each plan (2) groups that participate in (or are covered by) each plan (3) how plan assets, liabilities and expenses are measured, including the use of any actuaries and (4) significant assumptions used by the entity to value plan assets and liabilities and how such assumptions are derived. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- Definition Disclosure of accounting policy for segment reporting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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Note 1 - Summary of Significant Accounting Policies (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 24, 2016 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
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| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
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| Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
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| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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Note 2 - Discontinued Operations (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 24, 2016 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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Note 3 - Goodwill and Other Purchased Intangible Assets (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 24, 2016 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Goodwill [Table Text Block] |
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| Schedule of Finite-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 life, by either major class or business segment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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Note 4 - Financial Instruments Measured at Fair Value (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 24, 2016 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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 - Guarantees and Other Obligations (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 24, 2016 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Oct. 01, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
Dec. 26, 2015 |
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| Employee Stock Option [Member] | ||||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 707,000 | 857,000 | 752,000 | 912,000 | ||
| Allowance for Doubtful Accounts Receivable, Current | $ 100,000 | $ 100,000 | $ 100,000 | |||
| Goodwill and Intangible Asset Impairment | $ 0 | |||||
| Number of Operating Segments | 1 | |||||
| Foreign Currency Transaction Gain (Loss), Realized | (300,000) | $ 1,500,000 | $ (1,000,000) | $ 1,100,000 | ||
| Percentage of Revenue Recognized upon Customer Acceptance | 20.00% | |||||
| Percentage of Revenue Recognized upon Shipment and Passage of Title | 80.00% | |||||
| Deferred Revenue | 6,400,000 | $ 6,400,000 | 5,000,000 | |||
| Deferred Profit | 5,726,000 | 5,726,000 | 3,730,000 | |||
| Accumulated Other Comprehensive Income (Loss), Net of Tax | $ (19,084,000) | $ (19,084,000) | $ (21,772,000) | |||
| 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 percentage of revenue recognized upon customer acceptance. No definition available.
|
| X | ||||||||||
- Definition The percentage of revenue recognized upon shipment and passage of title. 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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| 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 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 | ||||||||||
- Details
|
Note 1 - Summary of Significant Accounting Policies - Reported Share-based Compensation (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Cost of Sales [Member] | ||||
| Allocated share-based compensation | $ 160 | $ 100 | $ 264 | $ 413 |
| Research and Development Expense [Member] | ||||
| Allocated share-based compensation | 288 | 256 | 998 | 841 |
| Selling, General and Administrative Expenses [Member] | ||||
| Allocated share-based compensation | 1,220 | 1,281 | 4,014 | 3,827 |
| Allocated share-based compensation | 1,668 | 1,637 | 5,276 | 5,081 |
| Income tax benefit | (76) | (70) | (189) | (181) |
| Total share-based compensation, net | $ 1,592 | $ 1,567 | $ 5,087 | $ 4,900 |
| 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://www.xbrl.org/2003/role/presentationRef
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| 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://www.xbrl.org/2003/role/presentationRef
|
| 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 |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Weighted average common shares (in shares) | 26,761 | 26,175 | 26,596 | 25,995 |
| Effect of dilutive stock options (in shares) | 606 | 621 | 760 | 684 |
| (in shares) | 27,367 | 26,796 | 27,356 | 26,679 |
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
Note 1 - Summary of Significant Accounting Policies - Customer Concentration (Details) - Sales Revenue, Net [Member] - Customer Concentration Risk [Member] |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Three Customers [Member] | ||||
| Percentage of net sales | 37.40% | |||
| Two Customers [Member] | ||||
| Percentage of net sales | 28.80% | 30.50% | 28.50% | |
| Customers individually accounting for more than 10% of net sales | 3 | 2 | 2 | 2 |
| X | ||||||||||
- Definition Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc. No definition available.
|
| 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 2 - Discontinued Operations (Details Textual) - USD ($) $ in Thousands |
1 Months Ended | 9 Months Ended | |
|---|---|---|---|
Jun. 27, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Broadcast Microwave Services, Inc. (“BMS”) [Member] | |||
| Proceeds from Divestiture of Businesses | $ 4,900 | ||
| Disposal Group, Including Discontinued Operation, Contingent Consideration | $ 2,500 | ||
| Proceeds from Divestiture of Businesses | $ 5,339 | ||
| Contingent Consideration Receivable, Fair Value | $ 500 | ||
| X | ||||||||||
- Definition Represents contingent consideration receivable fair value. No definition available.
|
| X | ||||||||||
- Definition 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
Note 2 - Discontinued Operations - Summary of Operating Results (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Broadcast Microwave Services, Inc. (“BMS”) [Member] | ||||
| Net sales | $ 6,965 | |||
| Operating loss before income taxes | (1,963) | |||
| Gain (loss) from sale of BMS | 51 | (222) | (4) | (3,232) |
| Income (loss) before taxes | 51 | (222) | (4) | (5,195) |
| Income tax provision | 6 | |||
| Income (loss), net of tax | 51 | (222) | (4) | (5,201) |
| Income (loss), net of tax | $ 51 | $ (222) | $ (4) | $ (5,201) |
| X | ||||||||||
- Definition Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
Note 3 - Goodwill and Other Purchased Intangible Assets (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Amortization of Intangible Assets | $ 1.8 | $ 1.7 | $ 5.4 | $ 5.3 |
| 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://www.xbrl.org/2003/role/presentationRef
|
Note 3 - Goodwill and Other Purchased Intangible Assets - Changes in Carrying Value of Goodwill (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 24, 2016 |
Dec. 26, 2015 |
|||||
| Balance | $ 60,264 | [1] | $ 63,132 | |||
| Impact of currency exchange | 764 | (2,868) | ||||
| Balance | $ 61,028 | $ 60,264 | [1] | |||
| ||||||
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
Note 3 - Goodwill and Other Purchased Intangible Assets - Purchased Intangible Assets, Subject to Amortization (Details) - USD ($) $ in Thousands |
9 Months Ended | |
|---|---|---|
Sep. 24, 2016 |
Dec. 26, 2015 |
|
| Rasco Technology [Member] | ||
| Gross Carrying Amount | $ 27,513 | $ 26,904 |
| Accumulated Amortization | $ 26,868 | 23,776 |
| Remaining Useful Life | 73 days | |
| Ismeca Technology [Member] | ||
| Gross Carrying Amount | $ 27,492 | 27,043 |
| Accumulated Amortization | $ 13,049 | 10,329 |
| Remaining Useful Life | 4 years 109 days | |
| Trade Names [Member] | ||
| Gross Carrying Amount | $ 5,651 | 5,547 |
| Accumulated Amortization | $ 401 | 92 |
| Remaining Useful Life | 14 years | |
| Gross Carrying Amount | $ 60,656 | 59,494 |
| Accumulated Amortization | $ 40,318 | $ 34,197 |
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 4 - Financial Instruments Measured at Fair Value (Details Textual) - USD ($) |
Sep. 24, 2016 |
Dec. 26, 2015 |
|---|---|---|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | $ 10,500,000 | $ 0 |
| 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
Note 4 - Financial Instruments Measured at Fair Value - Short-term Investments by Security Type (Details) - USD ($) $ in Thousands |
Sep. 24, 2016 |
Dec. 26, 2015 |
||||||
|---|---|---|---|---|---|---|---|---|
| Corporate Debt Securities [Member] | ||||||||
| Amortized Cost | [1] | $ 11,489 | ||||||
| Gross Unrealized Gains | [1] | |||||||
| Gross Unrealized Losses | [1] | 5 | ||||||
| Short-term investments | [1] | 11,484 | ||||||
| Foreign Government Debt Securities [Member] | ||||||||
| Amortized Cost | 639 | $ 650 | ||||||
| Gross Unrealized Gains | ||||||||
| Gross Unrealized Losses | ||||||||
| Short-term investments | 639 | 650 | ||||||
| Certificates of Deposit [Member] | ||||||||
| Amortized Cost | 3,313 | 1,002 | ||||||
| Gross Unrealized Gains | 1 | |||||||
| Gross Unrealized Losses | ||||||||
| Short-term investments | 3,314 | 1,002 | ||||||
| US Government-sponsored Enterprises Debt Securities [Member] | ||||||||
| Amortized Cost | 4,012 | |||||||
| Gross Unrealized Gains | 2 | |||||||
| Gross Unrealized Losses | ||||||||
| Short-term investments | 4,014 | |||||||
| Amortized Cost | 19,453 | 1,652 | ||||||
| Gross Unrealized Gains | 3 | |||||||
| Gross Unrealized Losses | 5 | |||||||
| Short-term investments | $ 19,451 | $ 1,652 | [2] | |||||
| ||||||||
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 4 - Financial Instruments Measured at Fair Value - Effective Maturities of Short-term Investments (Details) - USD ($) $ in Thousands |
Sep. 24, 2016 |
Dec. 26, 2015 |
|---|---|---|
| Due in one year or less, amortized cost | $ 19,453 | $ 1,450 |
| Due in one year or less, estimated fair value | 19,451 | 1,450 |
| Due after one year through three years, amortized cost | 202 | |
| Due after one year through three years, estimated fair value | 202 | |
| 19,453 | 1,652 | |
| $ 19,451 | $ 1,652 |
| 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.
|
| X | ||||||||||
- Definition Fair value of available-for-sale debt securities maturing in the second fiscal year through 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. No definition available.
|
| X | ||||||||||
- Definition This item represents the cost of debt 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the next 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Fair value of available-for-sale debt securities 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of debt securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
Note 4 - Financial Instruments Measured at Fair Value - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands |
Sep. 24, 2016 |
Dec. 26, 2015 |
|---|---|---|
| Fair Value, Inputs, Level 1 [Member] | Cash [Member] | ||
| Assets fair value, recurring | $ 58,299 | $ 73,746 |
| Fair Value, Inputs, Level 1 [Member] | ||
| Assets fair value, recurring | 58,299 | 73,746 |
| Fair Value, Inputs, Level 2 [Member] | Cash [Member] | ||
| Assets fair value, recurring | ||
| Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | ||
| Assets fair value, recurring | 19,952 | |
| Fair Value, Inputs, Level 2 [Member] | Foreign Government Debt Securities [Member] | ||
| Assets fair value, recurring | 639 | 650 |
| Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member] | ||
| Assets fair value, recurring | 42,450 | 41,624 |
| Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member] | ||
| Assets fair value, recurring | 3,314 | 1,002 |
| Fair Value, Inputs, Level 2 [Member] | ||
| Assets fair value, recurring | 70,369 | 43,276 |
| Cash [Member] | ||
| Assets fair value, recurring | 58,299 | 73,746 |
| Corporate Debt Securities [Member] | ||
| Assets fair value, recurring | 19,952 | |
| Foreign Government Debt Securities [Member] | ||
| Assets fair value, recurring | 639 | 650 |
| US Government-sponsored Enterprises Debt Securities [Member] | ||
| Assets fair value, recurring | 4,014 | |
| Money Market Funds [Member] | ||
| Assets fair value, recurring | 42,450 | 41,624 |
| Certificates of Deposit [Member] | ||
| Assets fair value, recurring | 3,314 | 1,002 |
| Assets fair value, recurring | $ 128,668 | $ 117,022 |
| X | ||||||||||
- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 5 - Employee Stock Benefit Plans (Details Textual) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended |
|---|---|---|---|
Sep. 24, 2016 |
Sep. 24, 2016 |
Dec. 26, 2015 |
|
| Employee Stock Purchase Plan [Member] | |||
| Stock Issued During Period, Shares, Employee Stock Purchase Plans | 0 | 56,288 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 754,775 | 754,775 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 85.00% | ||
| Equity Incentive Plan 2005 [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 1,815,471 | 1,815,471 | |
| Employee Stock Option [Member] | Minimum [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 1 year | ||
| Employee Stock Option [Member] | Maximum [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 4 years | ||
| Employee Stock Option [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years | ||
| Restricted Stock Units (RSUs) [Member] | Minimum [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 1 year | ||
| Restricted Stock Units (RSUs) [Member] | Maximum [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 4 years | ||
| Restricted Stock Units (RSUs) [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 471,225 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | 396,225 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 1,115,355 | 1,115,355 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding | $ 12.9 | $ 12.9 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms | 2 years 109 days | ||
| Equity Based Performance Stock Units [Member] | Minimum [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue | 25.00% | 25.00% | |
| Equity Based Performance Stock Units [Member] | Maximum [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue | 200.00% | 200.00% | |
| Equity Based Performance Stock Units [Member] | Share-based Compensation Award, Tranche One [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 100.00% | 50.00% | |
| Equity Based Performance Stock Units [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 222,316 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | 172,053 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 403,738 | 403,738 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding | $ 4.7 | $ 4.7 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms | 1 year 182 days | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 0 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | 32,555 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 1,730,496 | 1,730,496 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 10.71 | $ 10.71 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ 3.1 | $ 3.1 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | 4 years 36 days | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number | 1,617,819 | 1,617,819 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ 10.78 | $ 10.78 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ 2.9 | $ 2.9 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | 3 years 328 days |
| X | ||||||||||
- Definition Represents share based compensation arrangement by share based payment award percentage of shares available for issue. No definition available.
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Percentage of vesting of share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Intrinsic value of equity-based compensation awards outstanding. Excludes stock and unit options. No definition available.
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Purchase price of common stock expressed as a percentage of its fair value. No definition available.
|
| X | ||||||||||
- Definition Number of shares issued during the period as a result of an employee stock purchase plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 6 - Income Taxes (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
Dec. 31, 2016 |
|
| Foreign Subsidiaries [Member] | Held Outside of United States [Member] | |||||
| Cash, Cash Equivalents, and Short-term Investments | $ 65.9 | $ 65.9 | |||
| Scenario, Forecast [Member] | SINGAPORE | |||||
| Foreign Earnings Repatriated | $ 17.0 | ||||
| Effective Income Tax Rate Reconciliation, Percent | 79.60% | 41.30% | 65.40% | 39.10% | |
| X | ||||||||||
- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of foreign earnings repatriated from subsidiaries outside the country of domicile. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Note 8 - Guarantees and Other Obligations (Details Textual) SFr in Millions |
9 Months Ended | ||
|---|---|---|---|
|
Sep. 24, 2016
CHF (SFr)
|
Sep. 24, 2016
USD ($)
|
Dec. 26, 2015
USD ($)
|
|
| Minimum [Member] | |||
| Standard Product Warranty Term | 1 year | ||
| Maximum [Member] | |||
| Standard Product Warranty Term | 3 years | ||
| Non-current Other Accrued Liabilities [Member] | |||
| Product Warranty Accrual, Noncurrent | $ 1,300,000 | $ 1,100,000 | |
| Long-term Line of Credit | $ 0 | $ 0 | |
| Line of Credit Facility, Maximum Borrowing Capacity | SFr | SFr 2.5 |
| X | ||||||||||
- Definition Describes the term of the product warranty. No definition available.
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| 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://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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Note 8 - Guarantees and Other Obligations - Changes in Accrued Warranty (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
|
| Balance at beginning of period | $ 5,118 | $ 5,212 | $ 4,886 | $ 5,848 |
| Warranty expense accruals | 1,320 | 1,867 | 4,586 | 5,062 |
| Warranty payments | (1,401) | (1,905) | (4,435) | (5,736) |
| Balance at end of period | $ 5,037 | $ 5,174 | $ 5,037 | $ 5,174 |
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in the standard and extended product warranty accrual from warranties issued. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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