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Document And Entity Information - USD ($) $ in Millions	12 Months Ended
Document And Entity Information - USD ($) $ in Millions	Dec. 26, 2015	Feb. 11, 2016	Jun. 26, 2015
Entity Registrant Name	COHU INC
Entity Central Index Key	0000021535
Trading Symbol	cohu
Current Fiscal Year End Date	--12-26
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)		26,249,438
Entity Public Float			$ 193
Document Type	10-K
Document Period End Date	Dec. 26, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Current assets:
Cash and cash equivalents	$ 115,370	$ 70,885
Short-term investments	1,652	1,155
Accounts receivable, net	59,832	70,490
Inventories:
Raw materials and purchased parts	24,423	26,239
Work in process	20,124	19,044
Finished goods	6,801	3,917
Net inventory	51,348	49,200
Other current assets	6,261	8,363
Current assets of discontinued operations (Note 2)		10,318
Total current assets	234,463	210,411
Property plant and equipment, net	19,000	31,854
Goodwill	60,264	63,132
Intangible assets, net	25,297	33,087
Other assets	6,322	6,281
Total assets	345,346	344,765
Current liabilities:
Accounts payable	27,290	25,119
Accrued compensation and benefits	15,628	18,687
Accrued warranty	3,785	4,846
Deferred profit	3,730	6,941
Income taxes payable	4,195	3,133
Other accrued liabilities	8,563	6,708
Current liabilities of discontinued operations (Note 2)		2,783
Total current liabilities	63,191	68,217
Accrued retirement benefits	15,397	13,180
Noncurrent deferred gain on sale of facility (Note 3)	13,142
Deferred income taxes	6,954	7,269
Noncurrent income tax liabilities	6,761	7,321
Other accrued liabilities	1,764	1,004
Noncurrent liabilities of discontinued operations (Note 2)		706
Commitments and contingencies
Stockholders' equity:
Preferred stock, $1 par value; 1,000 shares authorized, none issued
Common stock, $1 par value; 60,000 shares authorized, 26,240 shares issued and outstanding in 2015 and 25,692 shares in 2014	26,240	25,692
Paid-in capital	105,516	97,938
Retained earnings	128,153	134,152
Accumulated other comprehensive loss	(21,772)	(10,714)
Total stockholders' equity	238,137	247,068
	$ 345,346	$ 344,765

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 26, 2015	Dec. 27, 2014
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)	26,240,000	25,692,000
Common stock, shares outstanding (in shares)	26,240,000	25,692,000

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Net sales	$ 269,654	$ 316,629	$ 214,511
Cost and expenses:
Cost of sales	180,616	210,657	157,111
Research and development	33,107	36,018	40,450
Selling, general and administrative	51,170	50,551	47,925
Gain on sale of facility (Note 3)	(3,198)
Cost and expenses	261,695	297,226	245,486
Income (loss) from operations	7,959	19,403	(30,975)
Interest income	44	30	54
Total	8,003	19,433	(30,921)
Income tax provision (benefit)	2,211	4,653	(2,373)
Income (loss) from continuing operations	5,792	14,780	(28,548)
Loss from discontinued operations, net of tax (Note 2)	(5,542)	(6,072)	(4,870)
Net income (loss)	$ 250	$ 8,708	$ (33,418)
Basic:
Income (loss) from continuing operations (in dollars per share)	$ 0.22	$ 0.58	$ (1.15)
Loss from discontinued operations (in dollars per share)	(0.21)	(0.24)	(0.19)
Net income (loss) (in dollars per share)	0.01	0.34	(1.34)
Diluted:
Income (loss) from continuing operations (in dollars per share)	0.22	0.57	(1.15)
Loss from discontinued operations (in dollars per share)	(0.21)	(0.24)	(0.19)
Net income (loss) (in dollars per share)	$ 0.01	$ 0.33	$ (1.34)
Weighted average shares used in computing income (loss) per share:
Basic (in shares)	26,057	25,393	24,859
Diluted (in shares)	26,788	26,006	24,859

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Net income (loss)	$ 250	$ 8,708	$ (33,418)
Other comprehensive income (loss), net of tax:
Changes in cumulative translation adjustment	(11,000)	(14,107)	3,270
Adjustments related to postretirement benefits, net of tax	(58)	(3,258)	1,604
Changes in unrealized gains and losses on investments, net of tax			(6)
Other comprehensive income (loss), net of tax	(11,058)	(17,365)	4,868
Comprehensive loss	$ (10,808)	$ (8,657)	$ (28,550)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 29, 2012	$ 24,632	$ 83,547	$ 170,937	$ 1,783	$ 280,899
Net loss			(33,418)		(33,418)
Changes in cumulative translation adjustment				3,270	3,270
Adjustments related to postretirement benefits, net of tax				1,604	1,604
Changes in unrealized gains and losses on investments, net of tax				(6)	(6)
Cash dividends - $0.24 per share			(5,973)		(5,973)
Exercise of stock options	117	769			886
Shares issued under employee stock purchase plan	163	1,088			1,251
Shares issued for restricted stock units vested	249	(249)
Repurchase and retirement of stock	(81)	(740)			(821)
Share-based compensation expense		5,468			5,468
Balance at Dec. 28, 2013	25,080	89,883	131,546	6,651	253,160
Net loss			8,708		8,708
Changes in cumulative translation adjustment				(14,107)	(14,107)
Adjustments related to postretirement benefits, net of tax				(3,258)	(3,258)
Changes in unrealized gains and losses on investments, net of tax
Cash dividends - $0.24 per share			(6,102)		(6,102)
Exercise of stock options	237	1,764			2,001
Shares issued under employee stock purchase plan	139	1,001			1,140
Shares issued for restricted stock units vested	353	(353)
Repurchase and retirement of stock	(117)	(1,133)			(1,250)
Share-based compensation expense		6,776			6,776
Balance at Dec. 27, 2014	25,692	97,938	134,152	(10,714)	247,068
Net loss			250		250
Changes in cumulative translation adjustment				(11,000)	(11,000)
Adjustments related to postretirement benefits, net of tax				(58)	(58)
Changes in unrealized gains and losses on investments, net of tax
Cash dividends - $0.24 per share			(6,249)		(6,249)
Exercise of stock options	175	1,335			1,510
Shares issued under employee stock purchase plan	123	977			1,100
Shares issued for restricted stock units vested	377	(377)
Repurchase and retirement of stock	(127)	(1,250)			(1,377)
Share-based compensation expense		6,893			6,893
Balance at Dec. 26, 2015	$ 26,240	$ 105,516	$ 128,153	$ (21,772)	$ 238,137

Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Retained Earnings [Member]
Cash dividend, per share (in dollars per share)	$ 0.24	$ 0.24	$ 0.24

Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
Consolidated Statements of Cash Flows $ in Thousands	Dec. 26, 2015 USD ($)	Dec. 27, 2014 USD ($)	Dec. 28, 2013 USD ($)
Broadcast Microwave Services, Inc. (“BMS”) [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain (loss) on disposal of segment	$ 3,573
Changes in current assets and liabilities, excluding effects from acquisitions and divestitures:
Proceeds from Divestiture of Businesses	4,881
Cohu Electronics [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain (loss) on disposal of segment		(4,434)
Changes in current assets and liabilities, excluding effects from acquisitions and divestitures:
Proceeds from Divestiture of Businesses		10,258
Net income (loss)	250	8,708	(33,418)
Gain on sale of facility	(3,198)
Operating cash flows of discontinued operations	(1,039)	9,466	1,894
Depreciation and amortization	11,273	12,607	12,517
Share-based compensation expense	6,755	6,388	5,111
Accrued retiree benefits	2,185	787	662
Deferred income taxes	222	832	(1,656)
Other assets	(326)
Loss on disposal and impairment of fixed assets	311
Other accrued liabilities	127
Accounts receivable	8,970	(18,656)	(1,585)
Inventories	(5,743)	(3,401)	11,656
Accrued compensation, warranty and other liabilities	(3,740)	6,218	(1,534)
Accounts payable	3,376	139	7,040
Deferred profit	(3,108)	2,181	3,448
Other current assets	2,420	(1,294)	(353)
Income taxes payable, including excess stock option exercise benefits	(828)	137	(365)
Net cash provided by operating activities	21,480	19,678	3,417
Net cash received from sale of facility	33,314
Purchases of property, plant and equipment	(6,586)	(1,457)	(3,607)
Purchases of short-term investments	(656)	(1,000)
Sales and maturities of short-term investments	155	1,045	6,221
Payment for purchase of Ismeca, net of cash received			(53,463)
Other assets			(176)
Investing cash flows of discontinued operations	(74)	(209)	(301)
Net cash provided by (used in) investing activities	31,034	8,637	(51,326)
Cash flows from financing activities:
Cash dividends paid	(6,215)	(6,067)	(4,468)
Issuance of stock, net	1,233	1,891	1,316
Net cash used in financing activities	(4,982)	(4,176)	(3,152)
Effect of exchange rate changes on cash and cash equivalents	(3,047)	(4,922)	(79)
Net increase (decrease) in cash and cash equivalents	44,485	19,217	(51,140)
Cash and cash equivalents at beginning of year	70,885	51,668	102,808
Cash and cash equivalents at end of year	115,370	70,885	51,668
Supplemental disclosure of cash flow information:
Cash paid (refunded) during the year for income taxes	(253)	971	(900)
Inventory capitalized as capital assets	315	1,166	640
Dividends declared but not yet paid	1,573	1,539	1,504
Capitalized facility under build-to-suit lease	$ 682

Note 1 - Summary of Significant Accounting Policies

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Significant Accounting Policies [Text Block]

1. Summary of Significant Accounting Policies

Basis of Presentation

– Cohu, Inc. (“Cohu”, “we”, “our” and “us”), through our wholly owned subsidiaries, is a provider of semiconductor test equipment. Our consolidated financial statements include the accounts of Cohu and our wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates.

Our fiscal years are based on a 52- or 53-week period ending on the last Saturday in December. Our fiscal years ended on December 26, 2015, December 27, 2014 and December 28, 2013 each consisted of 52 weeks.

Certain prior-period amounts in our consolidated financial statements have been reclassified to conform to the current period presentation.

Discontinued Operations

– On June 10, 2015, we sold our mobile microwave communications equipment business, Broadcast Microwave Services, Inc. (“BMS”) and on June 6, 2014, we completed the sale of our video camera business, Cohu Electronics. The operating results of BMS and Cohu Electronics 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.

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 per share includes the dilutive effect of common shares potentially issuable upon the exercise of stock options, vesting of outstanding restricted 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 per share, stock options with exercise prices that exceed the average fair market value of our common stock for the period are excluded.

For the years ended December 26, 2015 and December 27, 2014 approximately 875,000 and 1,771,000 shares of our common stock were excluded from the computation, respectively.

The following table reconciles the denominators used in computing basic and diluted income (loss) per share

(in thousands)	2015		2014		2013
Weighted average common shares outstanding		26,057		25,393		24,859
Effect of dilutive stock options and restricted stock units		731		613		-
		26,788		26,006		24,859

Cohu has utilized the “control number” concept in the computation of diluted earnings per share to determine whether potential common stock instruments are dilutive. The control number used is income from continuing operations. The control number concept requires that the same number of potentially dilutive securities applied in computing diluted earnings per share from continuing operations be applied to all other categories of income or loss, regardless of their anti-dilutive effect on such categories.

Cash, Cash Equivalents and Short-term Investments

– Highly liquid investments with insignificant interest rate risk and original maturities of three months or less are classified as cash and cash equivalents. Investments with maturities greater than three months are classified as short-term investments. All of our short-term investments are classified as available-for-sale and are reported at fair value, with any unrealized gains and losses, net of tax, recorded in the statement of comprehensive income (loss). We manage our cash equivalents and short-term investments as a single portfolio of highly marketable securities. We have the ability and intent, if necessary, to liquidate any of our investments in order to meet the liquidity needs of our current operations during the next 12 months. Accordingly, investments with contractual maturities greater than one year from December 26, 2015 have been classified as current assets in the accompanying consolidated balance sheets.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Fair Value of Financial Instruments

– The carrying amounts of our financial instruments, including cash and cash equivalents, short-term investments, accounts receivable, accounts payable and accrued expenses, approximate fair value due to the short maturities of these financial instruments.

Concentration of Credit Risk

– Financial instruments that potentially subject us to significant credit risk consist principally of cash equivalents, short-term investments and trade accounts receivable. We invest in a variety of financial instruments and, by policy, limit the amount of credit exposure with any one issuer.

Trade accounts receivable are presented net of allowance for doubtful accounts of $0.1 million at December 26, 2015 and $0.2 million at December 27, 2014. Our customers include semiconductor manufacturers and semiconductor test subcontractors and other customers located throughout many areas of the world. While we believe that our allowance for doubtful accounts is adequate and represents our best estimate of potential loss exposure at December 26, 2015, we will continue to monitor customer liquidity and other economic conditions, which may result in changes to our estimates regarding collectability.

Inventories

– Inventories are stated at the lower of cost, determined on a current average or first-in, first-out basis, or market. Cost includes labor, material and overhead costs. Determining market value of inventories involves numerous estimates and judgments including projecting average selling prices and sales volumes for future periods and costs to complete and dispose of inventory. As a result of these analyses, we record a charge to cost of sales in advance of the period when the inventory is sold when estimated market values are below our costs. Charges to cost of sales for excess and obsolete inventories aggregated $2.4 million, $2.6 million, and $7.1 million in 2015, 2014 and 2013, respectively.

Property, Plant and Equipment

– Depreciation and amortization of property, plant and equipment is calculated principally on the straight-line method based on estimated useful lives of thirty to forty years for buildings, five to fifteen years for building improvements and three to ten years for machinery, equipment and software. Land is not depreciated.

Property, plant and equipment consisted of the following

(in thousands)

	December 26,			December 27,
	2015			2014
Property, plant and equipment, at cost:
Land and land improvements	$	4,607		$	11,762
Buildings and building improvements		8,971			31,065
Machinery and equipment		31,888			32,356
		45,466			75,183
Less accumulated depreciation and amortization		(26,466	)		(43,329	)
Property plant and equipment, net	$	19,000		$	31,854

Depreciation expense was approximately $4.2 million in 2015, $4.8 million in 2014 and $4.7 million 2013.

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.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Goodwill, Purchased Intangible Assets and Other Long-lived Assets

– We evaluate goodwill for impairment annually on October 1

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 assets carrying amount and estimated fair value.

Product Warranty

– Product warranty costs are accrued in the period sales are recognized. Our products are generally sold with standard warranty periods, which differ by product, ranging from 12- to 36-months. Parts and labor are typically covered under the terms of the warranty agreement. Our warranty expense accruals are based on historical and estimated costs by product and configuration. From time-to-time we offer customers extended warranties beyond the standard warranty period. In those situations the revenue relating to the extended warranty is deferred at its estimated fair value and recognized on a straight-line basis over the contract period. Costs associated with our extended warranty contracts are expensed as incurred.

Income Taxes

– We assess our income tax positions and record tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances and information available at the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, we have recorded the largest amount of tax benefit with a greater than 50 percent likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements. Where applicable, associated interest and penalties have also been recognized and recorded, net of federal and state tax benefits, in income tax expense.

Contingencies and Litigation

– We assess the probability of adverse judgments in connection with current and threatened litigation. We would accrue the cost of an adverse judgment if, in our estimation, the adverse outcome is probable and we can reasonably estimate the ultimate cost.

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.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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. In certain instances where customer payments are received prior to product shipment, the customer’s payments are recorded as customer advances. At December 26, 2015, we had total deferred revenue of approximately $5.0 million and deferred profit of $3.7 million. At December 27, 2014, we had total deferred revenue of approximately $10.7 million and deferred profit of $6.9 million.

Advertising Costs

– Advertising costs are expensed as incurred and were not material for all periods presented.

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.

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 years ended December 26, 2015 and December 27, 2014 we recognized approximately $1.4 million and $2.0 million of foreign exchange gains in our consolidated statement of operations, respectively. Cumulative translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity.

Comprehensive Loss

– Our accumulated other comprehensive loss totaled approximately $21.8 million at December 26, 2015 and $10.7 million at December 27, 2014 and was attributed to, net of income taxes where applicable; foreign currency adjustments resulting from the translation of certain accounts into U.S. Dollars, unrealized losses and gains on investments and adjustments to accumulated postretirement benefit obligations. The U.S. Dollar strengthened relative to many foreign currencies as of December 26, 2015 compared to December 27, 2014. Consequently, our accumulated comprehensive loss increased by $11.0 million as a result of the foreign currency translation. Similarly, in the previous year, strengthening of the U.S. Dollar as of December 27, 2014 compared to December 28, 2013 led to an increase in our accumulated comprehensive loss of $14.1 million. Additional information related to accumulated other comprehensive income, on an after-tax basis is included in Note 11.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements –

In April 2015, the Financial Accounting Standards Board (“FASB”) issued

Accounting Standards Update (ASU) 2015-04, “Compensation - Retirement Benefits (Subtopic 715): Practical Expedient for the Measurement Date of an Employer's Defined Benefit Obligation and Plan Assets.” This update provides a practical expedient that permits a company to measure defined benefit plan assets and obligations using the month-end date that is closest to the company's fiscal year-end and apply that practical expedient consistently from year to year. The practical expedient should be applied consistently to all plans if the company has more than one plan. During the fourth quarter of fiscal 2015, we elected to early adopt this guidance and the adoption had no impact on our results of operations.

In November 2015, the FASB issued ASU 2015-17, “Balance Sheet Classification of Deferred Taxes”, which provides guidance on the presentation of deferred income taxes that requires deferred tax assets and liabilities, along with related valuation allowances, to be classified as noncurrent on the balance sheet. As a result, each tax jurisdiction will now only have one net noncurrent deferred tax asset or liability. The new guidance does not change the existing requirement that prohibits offsetting deferred tax liabilities from one jurisdiction against deferred tax assets of another jurisdiction. During the fourth quarter of fiscal 2015, we elected to early-adopt this guidance retrospectively. Adoption had no impact on our results of operations. The following table summarizes the adjustments made to conform prior year classifications with the new guidance (

in thousands

	December 27, 2014
	As Filed			Reclass			As Adjusted
Current deferred income tax assets	$	4,406		$	(4,406	)	$	-
Noncurrent deferred income tax assets		-			353			353
Current deferred income tax liabilities (included in other accrued liabilities)		(261	)		261			-
Noncurrent deferred income tax liabilities		(11,061	)		3,792			(7,269	)
Net deferred income tax assets (liabilities)	$	(6,916	)	$	-		$	(6,916	)

Recently Issued Accounting Pronouncements

– 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 are currently 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.

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, 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 annual reporting periods ending after December 15, 2016 and interim periods within annual periods beginning 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 July 2015, the FASB issued ASU 2015-11 “Simplifying the Measurement of Inventory” (ASU 2015-11). 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 new 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.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In September 2015, the FASB issued ASU 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 new standard is effective for interim and annual periods beginning after December 15, 2015, with early adoption permitted for financial statements that have not been issued. We do not expect the new standard to have a significant impact on our consolidated financial statements upon adoption.

Note 2 - Discontinued Operations

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]

2. Discontinued Operations

In 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. In 2014, we sold substantially all the assets of our video camera business, Cohu Electronics for $10.3 million comprised of $9.5 million in cash, $0.5 million in contingent consideration and a working capital adjustment. Our decision to sell these two non-core businesses resulted from management’s determination that they were no longer a strategic fit within our organization.

As part of the divestiture of BMS we recorded a long-term contingent consideration receivable that has been classified as Level 3 in the fair value hierarchy. See Note 5, “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. We determine the value of the contingent consideration using a Monte Carlo simulation model with changes to the fair value of the contingent consideration being recognized in discontinued operations. At December 26, 2015, the current fair value of the receivable totaled $0.5 million.

Balance sheet information for BMS presented as discontinued operations is summarized as follows

(in thousands)

	December 26, 2015		December 27, 2014
Assets:
Accounts receivable, net	$	-	$	3,156
Inventories		-		6,345
Other current assets		-		817
Total current assets	$	-	$	10,318
Liabilities:
Deferred Profit	$	-	$	504
Other accrued current liabilities		-		2,279
Total current liabilities		-		2,783
Noncurrent liabilities				706
Total liabilities	$	-	$	3,489

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Operating results of our discontinued operations are summarized as follows

(in thousands)

	December 26,			December 27,			December 28,
	2015			2014			2013

Net sales:
Microwave equipment segment	$	6,965		$	16,694		$	17,063
Video camera segment		-			5,460			15,726
	$	6,965		$	22,154		$	32,789

Operating loss before income taxes:
Microwave equipment segment	$	(1,963	)	$	(10,305	)	$	(6,142	)
Video camera segment		-			(242	)		1,317
		(1,963	)		(10,547	)		(4,825	)
Loss from sale of BMS		(3,573	)		-			-
Gain from sale of Cohu Electronics		-			4,434			-
Loss before taxes		(5,536	)		(6,113	)		(4,825	)
Income tax provision		6			(41	)		45
Loss, net of tax	$	(5,542	)	$	(6,072	)	$	(4,870	)

In the fourth quarter of fiscal 2015 we finalized a working capital adjustment associated with the sale of BMS. We also adjusted the fair value contingent consideration to be earned pursuant to the definitive agreement based on our current estimates. These adjustments have been included in the loss from sale of BMS presented above.

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-Section 45
-Paragraph 11
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 205
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-Section 50
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 205
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-Section 50
-Paragraph 5C
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=51719941&loc=SL51724579-110230

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 3A
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 5A
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 5D
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721683-107760

+ Details

Note 3 - Sale-leaseback of Poway Facility	12 Months Ended
Note 3 - Sale-leaseback of Poway Facility	Dec. 26, 2015
Notes to Financial Statements
Sale Leaseback Transaction Disclosure [Text Block]	3. Sale-leaseback of Poway Facility On December 4, 2015, we completed the sale of our headquarters facility located in Poway, California (the “Poway Facility”) for $34.1 million. After payment of commissions and other fees associated with the sale we realized net cash proceeds of approximately $33.3 million which resulted in a total gain of $18.5 million. Concurrent with the closing of the sale, we entered into two leases. One lease, with a ten-year term through 2025, provides for base rent of approximately $1.6 million per annum, with 3% annual adjustments for inflation and a pro rata share of property operating costs. The lease, covers approximately 43% of the Poway Facility that Cohu and our wholly owned subsidiary, Delta Design, Inc. will consolidate into. This lease also contains two five-year renewal options. The other lease is for a term of one year, provides for base rent of approximately $0.6 million and a pro rata share of property operating costs, and covers the balance of the Poway Facility. The transaction allows us to reduce the utilized space within the Poway Facility to better fit our current and anticipated future needs, as we transition manufacturing activities to Asia. We accounted for this transaction in accordance with ASC subtopic 840-40, Sale-leaseback transactions , and recognized a gain on the sale-leaseback totaling $3.2 million. The remaining $15.3 million portion of the gain not recognized at the time of sale has been deferred and will be recognized on a straight-line basis over the 10-year term lease in line with the recognition of rental expense related to the lease.

Note 4 - Goodwill and Purchased Intangible Assets

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

Goodwill and Purchased Intangible Assets

Changes in the carrying value of goodwill by during the years ended December 26, 2015 and December 27, 2014 were as follows

(

in thousands

)

	Total Goodwill
Balance, December 28, 2013	$	67,983
Impact of currency exchange		(4,851	)
Balance, December 27, 2014		63,132
Impact of currency exchange		(2,868	)
Balance, December 26, 2015	$	60,264

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Purchased intangible assets, subject to amortization, are as follows

(in thousands)

	December 26, 2015						December 27, 2014
					Remaining
	Gross Carrying		Accumulated		Useful Life		Gross Carrying		Accumulated
	Amount		Amortization		(years)		Amount		Amortization
Rasco technology	$	26,904	$	23,776		0.9	$	29,845	$	22,616
Ismeca technology		27,043		10,329		5.0		27,014		6,879
Trade names		5,547		92		14.7		5,723		-
	$	59,494	$	34,197			$	62,582	$	29,495

Changes in the carrying values of purchased intangible assets presented above are a result of the impact of fluctuation in currency exchange rates.

We review the assessment of indefinite life for our trade names each period to determine whether the indefinite life assumption continues to be supportable. If it is deemed unsupportable the change in useful life from indefinite to finite is made and amortization is recognized on a prospective basis after testing the assets for impairment. On September 24, 2015, we introduced a rebranding initiative and unveiled a new “Cohu” logo. The primary goal of the change was to improve the cohesiveness of our organization and come to the market as one brand. Previously, it had been our determination that the Rasco and Ismeca trade names had an indefinite life. As a result of the rebranding initiative, we determined that the classification of the useful life of our trade names as indefinite was no longer appropriate based on our expectations of the future period over which the assets will provide economic benefit to Cohu. After performing a test for impairment, we determined that the assets should be amortized over fifteen years.

Amortization expense related to purchased intangible assets was approximately $7.0 million in 2015 and $7.8 million in both 2014 and 2013. As of December 26, 2015, we expect amortization expense in future periods to be as follows: 2016 - $6.8 million; 2017 - $3.7 million; 2018 - $3.7 million; 2019 - $3.7 million 2020 - $3.7 million; and thereafter $3.7 million.

- 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.

+ References + Details

Note 5 - Financial Instruments Measured at Fair Value

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Fair Value, Measurement Inputs, Disclosure [Text Block]

5.	Financial Instruments Measured at Fair Value

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)

	At December 26, 2015
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Foreign government security	$	650	$	-	$	-	$	650
Bank certificates of deposit		1,002		-		-		1,002
	$	1,652	$	-	$	-	$	1,652

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

	At December 27, 2014
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Municipal securities	$	155	$	-	$	-	$	155
Bank certificates of deposit		1,000		-		-		1,000
	$	1,155	$	-	$	-	$	1,155

Effective maturities of short-term investments at December 26, 2015, were as follows:

	Amortized		Estimated
(in thousands)	Cost		Fair Value
Due in one year or less	$	1,450	$	1,450
Due after one year through three years		202		202
	$	1,652	$	1,652

Accounting standards pertaining to fair value measurements establish a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. When available, we use quoted market prices to determine the fair value of our investments, and they are included in Level 1. When quoted market prices are unobservable, we use quotes from independent pricing vendors based on recent trading activity and other relevant information.

The following table summarizes, by major security type, our financial instruments that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy

(in thousands)

	Fair value measurements at December 26, 2015 using:
							Total estimated
	Level 1		Level 2		Level 3		fair value
Cash	$	73,746	$	-	$	-	$	73,746
Foreign government security		-		650		-		650
Money market funds		-		41,624		-		41,624
Bank certificates of deposit		-		1,002		-		1,002
	$	73,746	$	43,276	$	-	$	117,022

	Fair value measurements at December 27, 2014 using:
							Total estimated
	Level 1		Level 2		Level 3		fair value
Cash	$	66,467	$	-	$	-	$	66,467
Municipal securities		-		155		-		155
Money market funds		-		4,418		-		4,418
Bank certificates of deposit		-		1,000		-		1,000
	$	66,467	$	5,573	$	-	$	72,040

Note 6 - Employee Benefit Plans

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

6. Employee Benefit Plans

Defined Contribution Retirement Plans

– We maintain a defined contribution 401(k) retirement savings plan covering all salaried and hourly U.S. employees. Participation is voluntary and participants’ contributions are based on their eligible compensation. We match contributions of participants, up to various statutory limits. In 2013 we provided a matching contribution at 1.5% and made contributions to the plan of approximately $0.3 million. In 2014 we increased our matching contribution to 3% and made contributions to the plan of approximately $0.7 million in both 2015 and 2014.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Defined Benefit Retirement Plans

– We maintain defined benefit plans for employees located outside the U.S. for which the majority of the obligations and net periodic benefit cost were determined to be immaterial for all period presented. As a result of the acquisition of Ismeca effective December 31, 2012, we took over the Ismeca Europe Semiconductor BVG Pension Plan in Switzerland (“the Swiss Plan”) and the following discussion only relates to the Swiss Plan.

Net periodic benefit cost of the Swiss Plan was as follows

(in thousands)	2015			2014			2013
Service cost	$	856		$	749		$	841
Interest cost		311			491			398
Expected return on assets		(193	)		(343	)		(267	)
Settlements		235			-			-
Net periodic costs	$	1,209		$	897		$	972

The following table sets forth the projected benefit obligation, the fair value of plan assets, the funded status and the liability we have recorded in our consolidated balance sheet related to the Swiss Plan:

(in thousands)	2015			2014
Change in projected benefit obligation:

Benefit obligation at beginning of year	$	(26,027	)	$	(23,850	)
Service cost		(856	)		(749	)
Interest cost		(311	)		(491	)
Actuarial gain (loss)		(660	)		(3,649	)
Participant contributions		(672	)		(728	)
Benefits paid		296			998
Plan change		558			-
Settlements		2,199			-
Foreign currency exchange adjustment		(10	)		2,442
Benefit obligation at end of year		(25,483	)		(26,027	)

Change in plan assets:

Fair value of plan assets at beginning of year		15,603			16,083
Return on assets, net of actuarial loss		277			652
Employer contributions		672			728
Participant contributions		672			728
Benefits paid		(296	)		(998	)
Settlements		(2,199	)		-
Foreign currency exchange adjustment		(13	)		(1,590	)
Fair value of plan assets at end of year		14,716			15,603

Net liability at end of year	$	(10,767	)	$	(10,424	)

At December 26, 2015 and December 27, 2014, the Swiss Plan’s net liability is included in noncurrent accrued retirement benefits. Amounts recognized in accumulated other comprehensive income net of tax related to the Swiss Plan consisted of an unrecognized net actuarial loss totaling $1.8 million at December 26, 2015 and $2.0 million at December 27, 2014.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Weighted-average actuarial assumptions used to determine the projected benefit obligation under the Swiss Plan are as follows

	2015			2014
Discount rate		1.0	%		1.3	%
Compensation increase		1.8	%		1.8	%

Weighted-average assumptions used to determine net periodic benefit cost of the Swiss Plan are as follows

	2015			2014			2013
Discount rate		1.3	%		2.3	%		1.8	%
Rate of return on Assets		1.3	%		2.3	%		1.8	%
Compensation increase		1.8	%		2.0	%		2.0	%

During 2016 employer and employee contributions to the Swiss Plan are expected to total $0.7 million. Estimated benefit payments are expected to be as follows: 2016 - $0.6 million; 2017 - $0.6 million; 2018 - $0.7 million; 2019 - $0.8 million; 2020 - $0.9 million; and $5.2 million thereafter through 2025.

As is customary with Swiss pension plans, the assets of the plan are invested in a collective fund with multiple employers. We have no investment authority over the assets of the plan that are held and invested by a Swiss insurance company. Investment holdings are made with respect to Swiss laws and target allocations for plan assets are 75% debt securities, 12% real estate investments, 8% alternative investments, 2% cash and 3% equity securities. The valuation of the collective fund assets as a whole is a Level 3 measurement; however the individual investments of the fund are generally Level 1 (equity securities), Level 2 (fixed income) and Level 3 (real estate and alternative) investments. We determine the fair value of the plan assets based on information provided by the collective fund, through review of the collective fund’s annual financial statements. See Note 5, “Financial Instruments Measured at Fair Value” for additional information on the three-tier fair value hierarchy.

Retiree Medical Benefits

– We provide post-retirement health benefits to certain executives and directors under a noncontributory plan. The net periodic benefit cost was $0.1 million in both 2015 and 2013 compared to a net periodic benefit income of $0.1 million in 2014. We fund benefits as costs are incurred and as a result there are no plan assets.

The weighted average discount rate used in determining the accumulated post-retirement benefit obligation was 4.2% in 2015, 3.8% in 2014 and 4.6% in 2013. Annual rates of increase of the cost of health benefits were assumed to be 7.5% in 2016. These rates were then assumed to decrease 0.3% per year to 4.5% in 2025 and remain level thereafter. A one percent increase (decrease) in health care cost trend rates would increase (decrease) the 2015 net periodic benefit cost by approximately $14,000 ($11,000) and the accumulated post-retirement benefit obligation as of December 26, 2015, by approximately $411,000 ($338,000).

Contributions to the post-retirement health benefit plan are expected to total $0.1 million in 2016. Estimated benefit payments are expected to be as follows: 2016 - $0.1 million; 2017 - $0.1 million; 2018 - $0.1 million; 2019 - $0.1 million; 2020 - $0.1 million; and $0.7 million thereafter through 2025.

The following table sets forth the post-retirement benefit obligation, funded status and the liability we have recorded in our consolidated balance sheets

(in thousands)	2015			2014
Accumulated benefit obligation at beginning of year	$	2,428		$	2,021
Service cost		-			13
Interest cost		90			91
Actuarial loss		187			370
Benefits paid		(56	)		(67	)
Accumulated benefit obligation at end of year		2,649			2,428
Plan assets at end of year		-			-
Funded status	$	(2,649	)	$	(2,428	)

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Deferred Compensation

– The Cohu, Inc. Deferred Compensation Plan allows certain of our officers to defer a portion of their current compensation. We have purchased life insurance policies on the participants with Cohu as the named beneficiary. Participant contributions, distributions and investment earnings and losses are accumulated in a separate account for each participant. At both December 26, 2015 and December 27, 2014, the payroll liability to participants, included in accrued compensation and benefits in the consolidated balance sheet, was approximately $2.6 million and the cash surrender value of the related life insurance policies included in other current assets was approximately $2.3 million.

Employee Stock Purchase Plan

– On May 12, 2015 our stockholders approved an amendment to the Cohu, Inc. 1997 Employee Stock Purchase Plan (“the Plan”) which increased the number of shares that may be issued under the Plan by 750,000 shares. As a result of this amendment the Plan

provides for the issuance of a maximum of 2,650,000 shares of our common stock. Under the Plan, eligible employees may purchase shares of common stock through payroll deductions. The price paid for the common stock is equal to 85% of the fair market value of our common stock on specified dates. During the last three years we issued shares under the Plan as follows: 2015 - 122,528; 2014 - 138,831 and 2013 - 163,120. At December 26, 2015, there were 811,063 shares reserved for issuance under the Plan.

Stock Options

– On May 12, 2015, our stockholders approved an amendment to the Cohu, Inc. 2005 Equity Incentive Plan (“the 2005 Plan”) which increased the number of shares that may be issued under the 2005 Plan by 1,500,000 shares. At December 26, 2015, a total of 2,255,701 shares were available for future equity grants under the 2005 Plan. Under the 2005 Plan stock options may be granted to employees, consultants and outside directors to purchase a fixed number of shares of our common stock at prices not less than 100% of the fair market value at the date of grant. Options generally vest and become exercisable after one year or in four annual increments beginning one year after the grant date and expire ten years from the grant date. We have historically issued new shares of Cohu common stock upon share option exercise.

Stock option activity under our share-based compensation plans was as follows:

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Shares			Ex. Price		Shares			Ex. Price		Shares			Ex. Price
Outstanding, beginning of year		2,435		$	11.67		3,086		$	11.93		3,113		$	12.62
Granted		10		$	10.98		10		$	12.58		470		$	9.83
Exercised		(175	)	$	8.65		(237	)	$	8.43		(117	)	$	7.55
Cancelled		(305	)	$	16.07		(424	)	$	15.37		(380	)	$	16.37
Outstanding, end of year		1,965		$	11.25		2,435		$	11.67		3,086		$	11.93

Options exercisable at year end		1,673		$	11.47		1,901		$	12.08		2,195		$	12.46

The aggregate intrinsic value of options exercised was $0.7 million in both 2015 and 2014, and $0.4 million in 2013. At December 26, 2015, the aggregate intrinsic value of options outstanding, vested and expected to vest and exercisable was $1.2 million.

Information about stock options outstanding at December 26, 2015 is as follows

(options in thousands)

			Options Outstanding						Options Exercisable
					Approximate
					Wt. Avg.
Range of			Number		Remaining		Wt. Avg.		Number		Wt. Avg.
Exercise Prices			Outstanding		Life (Years)		Ex. Price		Exercisable		Ex. Price
$7.32	-	$10.58		1,182		5.2	$	8.82		922	$	8.54
$10.59	-	$15.50		498		4.2	$	14.06		466	$	14.26
$15.51	-	$20.73		285		1.7	$	16.44		285	$	16.44
				1,965		4.4	$	11.25		1,673	$	11.47

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Restricted Stock Units

– Under our equity incentive plans, restricted stock units may be granted to employees, consultants and outside directors. Restricted stock units vest over either a one-year or a four-year period from the date of grant. Prior to vesting, restricted stock units do not have dividend equivalent rights, do not have voting rights and the shares underlying the restricted stock units are not considered issued and outstanding. New shares of our common stock will be issued on the date the restricted stock units vest net of the 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.

Restricted stock unit activity under our share-based compensation plans was as follows

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Units			Fair Value		Units			Fair Value		Units			Fair Value
Outstanding, beginning of year		1,026		$	9.54		887		$	9.46		615		$	10.54
Granted		482		$	10.54		497		$	10.07		531		$	8.80
Released		(339	)	$	9.63		(315	)	$	10.16		(223	)	$	10.86
Cancelled		(91	)	$	9.82		(43	)	$	9.41		(36	)	$	9.86
Outstanding, end of year		1,078		$	9.93		1,026		$	9.54		887		$	9.46

Equity-Based Performance Stock Units

–

In 2012, we began granting equity-based performance units covering shares of our common stock to certain employees. The number of shares of stock ultimately issued will depend upon the extent to which certain financial performance goals set by our Board of Directors are met during the one-year award measurement period. Based upon the level of achievement of performance goals the number of shares we ultimately issue can range from 0% up to 150% of the number of shares under each grant which vest over 3 years from the date of initial grant. In 2014, we began awarding equity-based performance stock units to senior executives with vesting that is contingent on the level of achievement of certain performance goals, market return and continued service (“market-based PSUs”) and in 2015, the market-based PSUs granted are only subject to certain adjustments resulting from performance of Cohu’s Relative Total Shareholder Return (“TSR”) to a selected peer group over a two-year measurement period following the date of grant based on the percentage by which our TSR exceeds or falls below the selected peer group. Market-based PSUs earned will vest at the rate of 50% on the second and third anniversary of their grant. We estimated the fair value of market-based PSUs using a Monte Carlo simulation model on the date of grant. Compensation expense is recognized ratably over the measurement period of each vesting tranche based on our current assessment of achievement of the performance goals. New shares of our common stock will be issued on the date the equity-based performance units 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.

Performance based stock unit activity under our share-based compensation plans was as follows

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Units			Fair Value		Units			Fair Value		Units			Fair Value
Outstanding, beginning of year		334		$	10.49		238		$	9.32		122		$	9.89
Granted		156		$	10.69		208		$	11.34		158		$	9.03
Released		(38	)	$	9.52		(38	)	$	9.52		(26	)	$	9.89
Cancelled		(76	)	$	9.86		(74	)	$	9.59		(16	)	$	9.89
Outstanding, end of year		376		$	10.80		334		$	10.49		238		$	9.32

Share-based Compensation

– We estimate the fair value of each share-based award on the grant date using the Black-Scholes and the Monte Carlo simulation valuation models. Option valuation models require the input of highly subjective assumptions and changes in the assumptions used can materially affect the grant date fair value of an award. These assumptions for the Black-Scholes model include the risk-free rate of interest, expected dividend yield, expected volatility, and the expected life of the award. The risk-free rate of interest is based on the U.S. Treasury rates appropriate for the expected term of the award as of the grant date. Expected dividends are based primarily on historical factors related to our common stock. Expected volatility is based on historic weekly stock price observations of our common stock during the period immediately preceding the share-based award grant that is equal in length to the award’s expected term. We believe that historical volatility is the best estimate of future volatility. Expected life of the award is based on historical option exercise data. The Monte Carlo simulation model incorporates assumptions for the risk-free interest rate, Cohu and the selected peer group price volatility, the correlation between Cohu and the selected index, and dividend yields.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Share-based compensation expense related to restricted stock unit awards is calculated based on the market price of our common stock on the date of grant, reduced by the present value of dividends expected to be paid on our common stock prior to vesting of the restricted stock unit. Estimated forfeitures are required to be included as a part of the grant date expense estimate. We used historical data to estimate expected employee behaviors related to option exercises and forfeitures.

The following weighted average assumptions were used to value share-based awards granted:

Employee Stock Purchase Plan	2015			2014			2013
Dividend yield		2.2	%		2.4	%		2.6	%
Expected volatility		35.3	%		35.3	%		38.4	%
Risk-free interest rate		0.1	%		0.1	%		0.1	%
Expected term (years)		0.5			0.5			0.5
Weighted-average grant date fair value per share	$	2.71		$	2.52		$	2.32

Employee Stock Options	2015			2014			2013
Dividend yield		2.1	%		2.0	%		2.6	%
Expected volatility		39.1	%		42.5	%		44.9	%
Risk-free interest rate		1.6	%		1.9	%		1.1	%
Expected term (years)		5.9			5.9			6.4
Weighted-average grant date fair value per share	$	3.46		$	4.39		$	3.37

Restricted Stock Units		2015				2014				2013
Dividend yield			2.1	%			2.2	%			2.5	%

Performance Stock Units		2015				2014				2013
Dividend yield			2.1	%			2.2	%			2.5	%

Reported share-based compensation is classified in the consolidated financial statements as follows

(in thousands)	2015			2014			2013
Cost of sales	$	566		$	491		$	390
Research and development		1,092			1,858			1,623
Selling, general and administrative		5,097			4,039			3,098
Share-based compensation of continuing operations		6,755			6,388			5,111
Discontinued operations		138			388			357
Income tax benefit		(249	)		(204	)		-
Total share-based compensation, net of tax	$	6,644		$	6,572		$	5,468

At December 26, 2015, excluding a reduction for forfeitures, we had approximately $0.6 million of pre-tax unrecognized compensation cost related to unvested stock options which is expected to be recognized over a weighted-average period of approximately 1.2 years.

At December 26, 2015, excluding a reduction for forfeitures, we had approximately $10.0 million of pre-tax unrecognized compensation cost related to unvested restricted stock units and performance stock units which is expected to be recognized over a weighted-average period of approximately 2.3 years.

Note 7 - Income Taxes

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Income Tax Disclosure [Text Block]

7. Income Taxes

Significant components of the provision (benefit) for income taxes for continuing operations are as follows

(in thousands)	2015		2014			2013
Current:
U.S. Federal	$	5	$	(307	)	$	(1,539	)
U.S. State		28		40			42
Foreign		1,956		4,088			780
Total current		1,989		3,821			(717	)
Deferred:
U.S. Federal		89		112			763
U.S. State		49		(17	)		24
Foreign		84		737			(2,443	)
Total deferred		222		832			(1,656	)
	$	2,211	$	4,653		$	(2,373	)

Income (loss) before income taxes from continuing operations consisted of the following

(in thousands)	2015			2014		2013
U.S.	$	(5,214	)	$	1,076	$	(23,193	)
Foreign		13,217			18,357		(7,728	)
Total	$	8,003		$	19,433	$	(30,921	)

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting and tax purposes. Significant components of our deferred tax assets and liabilities were as follows:

(in thousands)	2015			2014
Deferred tax assets:
Inventory, receivable and warranty reserves	$	8,207		$	9,585
Net operating loss carryforwards		7,605			8,266
Tax credit carryforwards		12,291			11,905
Accrued employee benefits		4,993			5,232
Deferred profit and gain on facility sale		6,084			1,091
Stock-based compensation		4,443			4,352
Acquisition basis differences		1,544			2,133
Other		265			608
Gross deferred tax assets		45,432			43,172
Less valuation allowance		(42,289	)		(37,023	)
Total deferred tax assets		3,143			6,149
Deferred tax liabilities:
Depreciation and fixed asset related		227			1,822
Acquisition basis differences		8,904			10,600
Other		563			643
Total deferred tax liabilities		9,694			13,065
Net deferred tax liabilities	$	(6,551	)	$	(6,916	)

Companies are required to assess whether a valuation allowance should be recorded against their deferred tax assets (“DTAs”) based on the consideration of all available evidence, using a “more likely than not” realization standard. The four sources of taxable income that must be considered in determining whether DTAs will be realized are, (1) future reversals of existing taxable temporary differences (i.e. offset of gross deferred tax assets against gross deferred tax liabilities); (2) taxable income in prior carryback years, if carryback is permitted under the tax law; (3) tax planning strategies and (4) future taxable income exclusive of reversing temporary differences and carryforwards.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In assessing whether a valuation allowance is required, significant weight is to be given to evidence that can be objectively verified. We have evaluated our DTAs each reporting period, including an assessment of our cumulative income or loss over the prior three-year period and future periods, to determine if a valuation allowance was required. A significant negative factor in our assessment was Cohu's three-year cumulative U.S. loss history at the end of various fiscal periods including 2015.

As a result of our cumulative, three-year U.S. GAAP pretax loss from continuing operations of approximately $27.3 million at the end of 2015, and our U.S. loss in 2015, we were unable to conclude at December 26, 2015 that it was “more likely than not” that our U.S. DTAs would be realized. We will evaluate the realizability of our DTAs at the end of each quarterly reporting period in 2016 and should circumstances change it is possible the remaining valuation allowance, or a portion thereof, will be reversed in a future period.

Our valuation allowance on our DTAs at December 26, 2015 and December 27, 2014 was approximately $42.3 million and $37.0 million, respectively. The remaining gross DTAs for which a valuation allowance was not recorded are realizable through future reversals of existing taxable temporary differences.

As the realization of DTAs is determined by tax jurisdiction, the deferred tax liabilities recorded as part of the 2008 acquisition of Rasco, a German corporation, and the fiscal 2013 acquisition of Ismeca, a Swiss Corporation, were not a source of taxable income in assessing the realization of our DTAs in the U.S.

The reconciliation of income tax computed at the U.S. federal statutory tax rate to the provision (benefit) for income taxes for continuing operations is as follows:

(in thousands)	2015			2014			2013
Tax provision (credit) at U.S. 35% statutory rate	$	2,801		$	6,802		$	(10,822	)
State income taxes, net of federal tax benefit		(152	)		119			(1,089	)
Settlements, adjustments and releases from statute expirations		(104	)		(65	)		(849	)
Federal tax credits		(221	)		(244	)		(1,340	)
Stock-based compensation on which no tax benefit provided		156			160			168
Change in valuation allowance		2,181			437			9,574
Foreign income taxed at different rates		(2,601	)		(2,151	)		1,513
Other, net		151			(405	)		472
	$	2,211		$	4,653		$	(2,373	)

State income taxes, net of federal benefit, have been reduced by research tax credits totaling approximately $0.4 million, $0.5 million and $0.7 million in 2015, 2014 and 2013, respectively.

At December 26, 2015, we had federal, state and foreign net operating loss carryforwards of approximately $19.3 million, $21.3 million and $1.6 million, respectively, that expire in various tax years beginning in 2018 through 2035 or have no expiration date. We also have federal and state tax credit carryforwards at December 26, 2015 of approximately $6.7 million and $13.6 million, respectively, certain of which expire in various tax years beginning in 2016 through 2035 or have no expiration date. The federal and state loss and credit carryforwards are subject to annual limitations under Sections 382 and 383 of the Internal Revenue Code and applicable state tax law.

The American Taxpayer Relief Act of 2012, which reinstated the United States federal research and development tax credit retroactively from January 1, 2012 through December 31, 2013, was not enacted into law until the first quarter of 2013. Therefore, the tax benefit from the credits for 2012 and 2013 is reflected in the Company's 2013 income tax provision.

U.S. income taxes have not been provided on approximately $41 million of accumulated undistributed earnings of certain foreign subsidiaries, as we currently intend to indefinitely reinvest these earnings in operations outside the U.S. It is not practicable to estimate the amount of tax that might be payable if some or all of such earnings were to be remitted. We have certain tax holidays with respect to our operations in Malaysia and the Philippines. These holidays require compliance with certain conditions and expire at various dates through 2023. The impact of these holidays was an increase in net income of approximately $0.8 million, or $0.03 per share, in 2015 and not significant in fiscal 2014 and 2013.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

A reconciliation of our gross unrecognized tax benefits, excluding accrued interest and penalties, is as follows:

(in thousands)	2015			2014			2013
Balance at beginning of year	$	10,841		$	10,483		$	6,080
Gross additions for tax positions of current year		215			761			933
Gross additions for tax positions of prior years		248			365			3,700
Reductions due to lapse of the statute of limitations		(243	)		(587	)		-
Foreign exchange rate impact		(617	)		(181	)		(230	)
Balance at end of year	$	10,444		$	10,841		$	10,483

The 2013 gross additions for tax positions of prior years are primarily composed of additions from the Ismeca acquisition.

If the unrecognized tax benefits at December 26, 2015 are ultimately recognized, approximately $5.6 million ($6.2 million at December 27, 2014) would result in a reduction in our income tax expense and effective tax rate. It is reasonably possible that our gross unrecognized tax benefits as of December 26, 2015 could decrease in 2016 by approximately $0.5 million as a result of the expiration of certain statutes of limitations.

We recognize interest and penalties related to unrecognized tax benefits in income tax expense. Cohu had approximately $1.4 million accrued for the payment of interest and penalties at December 26, 2015 and December 27, 2014. Interest and penalty expense, net of accrued interest reversed, was approximately $0.1 in 2015, not significant in 2014 and approximately $(0.1) million in 2013.

Our U.S. federal and state income tax returns for years after 2011 and 2010, respectively, remain open to examination, subject to the statute of limitations. Net operating loss and credit carryforwards arising prior to these years are also open to examination if and when utilized. The statute of limitations for the assessment and collection of income taxes related to our foreign tax returns varies by country. In the foreign countries where we have significant operations these time periods generally range from four to ten years after the year for which the tax return is due or the tax is assessed.

Note 8 - Segment and Geographic Information

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

8. Segment and Geographic Information

We applied the provisions of ASC Topic 280,

Segment Reporting

, (“ASC 280”) which sets forth a management approach to segment reporting, 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 their similarities in customer base, economic characteristics, and the nature of products and services provided and, as a result we report in one segment, semiconductor equipment. As a result, the financial information disclosed herein materially represents all of the financial information related to our semiconductor equipment segment.

During the last three years, the following customers comprised 10% or greater of our consolidated net sales:

	2015			2014			2013
Intel		18.0	%		15.7	%		18.5	%
NXP Semiconductors N.V. (1)		11.4	%		11.4	%		13.5	%

(1)	The merger of NXP Semiconductors N.V. and Freescale Semiconductor, Ltd. was completed on December 7, 2015. Sales to these customers have been combined for all periods presented.

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Net sales to customers, attributed to countries based on product shipment destination, were as follows:

(in thousands)	2015		2014		2013
Malaysia	$	60,776	$	73,818	$	51,491
China		52,589		51,662		39,202
United States		50,704		72,266		39,504
Philippines		16,270		28,669		26,489
Rest of the World		89,315		90,214		57,825
Total	$	269,654	$	316,629	$	214,511

Geographic location of our property, plant and equipment and other long-lived assets was as follows

(in thousands)	2015		2014
Property, plant and equipment:
United States	$	3,054	$	18,986
Germany		6,882		7,484
Philippines		4,171		2,721
Malaysia		4,165		1,838
Rest of the World		728		825
Total, net	$	19,000	$	31,854

Goodwill and other intangible assets:
Germany	$	31,337	$	38,527
Switzerland		22,444		25,921
United States		17,241		17,241
Malaysia		6,995		6,988
Singapore		6,558		6,558
Rest of the World		986		984
Total, net	$	85,561	$	96,219

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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+ Details

Note 9 - Commitments and Contingencies

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Contingencies Disclosure [Text Block]

9. Commitments and Contingencies

We lease certain of our facilities and equipment under non-cancelable operating leases. Rental expense was $1.8 million in both 2015 and 2014 and $1.7 million 2013. Future minimum lease payments at December 26, 2015 are as follows:

(in thousands)		2016				2017				2018				2019				2020				Thereafter				Total
Non-cancelable operating leases		$	3,639			$	2,628			$	2,389			$	2,404			$	2,453			$	11,901			$	25,414

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.

- 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.

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+ Details

Note 10 - Guarantees

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Commitments Contingencies and Guarantees [Text Block]

10.	Guarantees

Accrued Warranty

Changes in accrued warranty during the three-year period ended December 26, 2015 was as follows

(in thousands)	2015			2014			2013
Beginning balance	$	5,848		$	4,673		$	4,206
Warranty accruals		6,747			6,176			4,814
Warranty payments		(7,709	)		(5,001	)		(6,180	)
Warranty liability assumed		-			-			1,833
Ending balance	$	4,886		$	5,848		$	4,673

Accrued warranty amounts expected to be incurred after one year are included in noncurrent other accrued liabilities in the consolidated balance sheet. These amounts total $1.1 million at December 26, 2015 and $1.0 million at December 27, 2014. Prior period long-term accrued warranty amounts have been reclassified to a long-term liability in the December 27, 2014 balance sheet to conform to the current period presentation. This reclassification had no effect on previously reported net income and is considered immaterial.

Standby Letters of Credit

During the ordinary course of business, we provide standby letters of credit instruments to certain parties as required. At December 26, 2015, the maximum potential amount of future payments that we could be required to make under these standby letters of credit was approximately $0.2 million. We are required to maintain deposits of cash or other approved investments, which serve as collateral, in amounts that approximate our outstanding standby letters of credit. We have not recorded any liability in connection with these arrangements beyond that required to appropriately account for the underlying transaction being guaranteed. We do not believe, based on historical experience and information currently available, that it is probable that any amounts will be required to be paid under these arrangements.

Lines of Credit

Our wholly owned Ismeca subsidiary has two available lines of credit which provide it with borrowings of up to a total of 2.5 million Swiss Francs. At December 26, 2015 and December 27, 2014 no amounts were outstanding under the lines of credit.

Note 11 - Accumulated Other Comprehensive Income (Loss)

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Comprehensive Income (Loss) Note [Text Block]

11.	Accumulated Other Comprehensive Income (Loss)

Components of other comprehensive income (loss), on an after-tax basis, were as follows

(in thousands)	Before Tax amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended December 28, 2013
Foreign currency translation adjustments	$	3,270		$	-		$	3,270
Adjustments related to postretirement benefits		1,889			(285	)		1,604
Change in unrealized gain/loss on investments		(14	)		8			(6	)
Other comprehensive income (loss)	$	5,145		$	(277	)	$	4,868
Year ended December 27, 2014
Foreign currency translation adjustments	$	(14,107	)	$	-		$	(14,107	)
Adjustments related to postretirement benefits		(3,809	)		551			(3,258	)
Other comprehensive income (loss)	$	(17,916	)	$	551		$	(17,365	)
Year ended December 26, 2015
Foreign currency translation adjustments	$	(11,000	)	$	-		$	(11,000	)
Adjustments related to postretirement benefits		(24	)		(34	)		(58	)
Other comprehensive income (loss)	$	(11,024	)	$	(34	)	$	(11,058	)

COHU, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Components of accumulated other comprehensive loss, net of tax, at the end of each period are as follows:

(in thousands)	2015			2014
Accumulated net currency translation adjustments	$	(19,327	)	$	(8,327	)
Accumulated net adjustments related to postretirement benefits		(2,445	)		(2,387	)
Total accumulated other comprehensive loss	$	(21,772	)	$	(10,714	)

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

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-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Note 12 - Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Quarterly Financial Information [Text Block]

12. Quarterly Financial Data (Unaudited)

Quarter		First (a)			Second (a)			Third (a)		Fourth (a)		Year
(in thousands, except per share data)

Net sales:	2015	$	63,447		$	75,211		$	67,512	$	63,484	$	269,654
	2014	$	60,170		$	74,299		$	91,573	$	90,587	$	316,629

Gross profit:	2015	$	20,145		$	25,702		$	22,794	$	20,397	$	89,038
	2014	$	20,030		$	24,263		$	32,952	$	28,727	$	105,972

Income (loss) from continuing operations	2015	$	(1,720	)	$	3,887		$	1,335	$	2,290	$	5,792
	2014	$	(2,707	)	$	2,200		$	10,012	$	5,275	$	14,780

Net income (loss)	2015	$	(2,740	)	$	(72	)	$	1,113	$	1,949	$	250
	2014	$	(3,348	)	$	4,163		$	7,519	$	374	$	8,708

Income (loss) per share (b):
Basic:
Income (loss) from continuing operations	2015	$	(0.07	)	$	0.15		$	0.05	$	0.09	$	0.22
	2014	$	(0.11	)	$	0.09		$	0.39	$	0.21	$	0.58

Net income (loss)	2015	$	(0.11	)	$	0.00		$	0.04	$	0.07	$	0.01
	2014	$	(0.13	)	$	0.16		$	0.30	$	0.01	$	0.34

Diluted:
Income (loss) from continuing operations	2015	$	(0.07	)	$	0.15		$	0.05	$	0.08	$	0.22
	2014	$	(0.11	)	$	0.09		$	0.38	$	0.20	$	0.57

Net income (loss)	2015	$	(0.11	)	$	0.00		$	0.04	$	0.07	$	0.01
	2014	$	(0.13	)	$	0.16		$	0.29	$	0.01	$	0.33

(a)

All quarters presented above were comprised of 13 weeks.

(b)

The sum of the four quarters may not agree to the year total due to rounding within a quarter and the inclusion or exclusion of common stock equivalents.

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 26, 2015

Notes to Financial Statements

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

COHU, INC.

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

(in thousands)

			Additions			Additions
			(Reductions)			(Reductions)
	Balance at		Not			Charged					Balance
	Beginning		Charged			(Credited)			Deductions/		at End
Description	of Year		to Expense			to Expense			Write-offs		of Year

Allowance for doubtful accounts:

Year ended December 28, 2013	$	12	$	353	(2)	$	172		$	207	$	330

Year ended December 27, 2014	$	330	$	(1	) (1)	$	(126	)	$	24	$	179

Year ended December 26, 2015	$	179	$	1	(1)	$	19		$	128	$	71


Reserve for excess and obsolete inventories:

Year ended December 28, 2013	$	25,261	$	7,398	(3)	$	7,068		$	4,506	$	35,221

Year ended December 27, 2014	$	35,221	$	(762	) (1)	$	2,624		$	9,232	$	27,851

Year ended December 26, 2015	$	27,851	$	(648	) (1)	$	2,409		$	2,959	$	26,653

All amounts presented above have been restated to exclude the impact of our discontinued operations.

(1)	Changes in reserve balances resulting from foreign currency impact.
(2)	Includes $0.4 million resulting from Ismeca Acquisition on December 31, 2012 and foreign currency impact.
(3)	Includes $6.8 million resulting from Ismeca Acquisition on December 31, 2012, foreign currency impact and reclass from other reserves.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 26, 2015

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation

Certain prior-period amounts in our consolidated financial statements have been reclassified to conform to the current period presentation.

Discontinued Operations, Policy [Policy Text Block]

Discontinued Operations

” for additional information. Unless otherwise indicated, all amounts herein relate to continuing operations.

Earnings Per Share, Policy [Policy Text Block]

Income (Loss

) Per Share

For the years ended December 26, 2015 and December 27, 2014 approximately 875,000 and 1,771,000 shares of our common stock were excluded from the computation, respectively.

The following table reconciles the denominators used in computing basic and diluted income (loss) per share

(in thousands)	2015		2014		2013
Weighted average common shares outstanding		26,057		25,393		24,859
Effect of dilutive stock options and restricted stock units		731		613		-
		26,788		26,006		24,859

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash, Cash Equivalents and Short-term Investments

Fair Value Measurement, Policy [Policy Text Block]

Fair Value of Financial Instruments

Concentration Risk, Credit Risk, Policy [Policy Text Block]

Concentration of Credit Risk

Inventory, Policy [Policy Text Block]

Inventories

Property, Plant and Equipment, Policy [Policy Text Block]

Property, Plant and Equipment

Property, plant and equipment consisted of the following

(in thousands)

	December 26,			December 27,
	2015			2014
Property, plant and equipment, at cost:
Land and land improvements	$	4,607		$	11,762
Buildings and building improvements		8,971			31,065
Machinery and equipment		31,888			32,356
		45,466			75,183
Less accumulated depreciation and amortization		(26,466	)		(43,329	)
Property plant and equipment, net	$	19,000		$	31,854

Depreciation expense was approximately $4.2 million in 2015, $4.8 million in 2014 and $4.7 million 2013.

Segment Reporting, Policy [Policy Text Block]

Segment Information

– We applied the provisions of ASC Topic 280,

Segment Reporting

Goodwill and Intangible Assets, Policy [Policy Text Block]

Goodwill, Purchased Intangible Assets and Other Long-lived Assets

– We evaluate goodwill for impairment annually on October 1

As of October 1, 2015, the results of our qualitative assessment indicated there was no impairment.

Standard Product Warranty, Policy [Policy Text Block]

Product Warranty

Regulatory Income Taxes, Policy [Policy Text Block]

Income Taxes

Commitments and Contingencies, Policy [Policy Text Block]

Contingencies and Litigation

Revenue Recognition Leases [Policy Text Block]

Revenue Recognition

On shipments where sales are not recognized, gross profit is generally recorded as deferred profit in our consolidated balance sheet representing the difference between the receivable recorded and the inventory shipped. In certain instances where customer payments are received prior to product shipment, the customer’s payments are recorded as customer advances in our consolidated balance sheet. At December 26, 2015, we had total deferred revenue of approximately $5.0 million and deferred profit of $3.7 million. At December 27, 2014, we had total deferred revenue of approximately $10.7 million and deferred profit of $6.9 million.

Advertising Costs, Policy [Policy Text Block]

Advertising Costs

– Advertising costs are expensed as incurred and were not material for all periods presented.

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

Share-based Compensation

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign Currency Translation

Comprehensive Income, Policy [Policy Text Block]

Comprehensive Loss

– Our accumulated other comprehensive loss totaled approximately $21.8 million at December 26, 2015 and at December 27, 2014 our other comprehensive loss totaled approximately $10.7 million and was attributed to, net of income taxes where applicable; foreign currency adjustments resulting from the translation of certain accounts into U.S. Dollars, unrealized losses and gains on investments and adjustments to accumulated postretirement benefit obligations. The U.S. Dollar strengthened relative to many foreign currencies as of December 26, 2015 compared to December 27, 2014. Consequently, our accumulated comprehensive loss increased by $11.0 million as a result of the foreign currency translation. Similarly, in the previous year, strengthening of the U.S. Dollar as of December 27, 2014 compared to December 28, 2013 led to an increase in our accumulated comprehensive loss of $14.1 million. Additional information related to accumulated other comprehensive income, on an after-tax basis is included in Note 11.

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements –

In April 2015, the Financial Accounting Standards Board (“FASB”) issued

in thousands

	December 27, 2014
	As Filed			Reclass			As Adjusted
Current deferred income tax assets	$	4,406		$	(4,406	)	$	-
Noncurrent deferred income tax assets		-			353			353
Current deferred income tax liabilities (included in other accrued liabilities)		(261	)		261			-
Noncurrent deferred income tax liabilities		(11,061	)		3,792			(7,269	)
Net deferred income tax assets (liabilities)	$	(6,916	)	$	-		$	(6,916	)

Recently Issued Accounting Pronouncements

measured at the lower of cost

and

Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(in thousands)	2015		2014		2013
Weighted average common shares outstanding		26,057		25,393		24,859
Effect of dilutive stock options and restricted stock units		731		613		-
		26,788		26,006		24,859

Property, Plant and Equipment [Table Text Block]

	December 26,			December 27,
	2015			2014
Property, plant and equipment, at cost:
Land and land improvements	$	4,607		$	11,762
Buildings and building improvements		8,971			31,065
Machinery and equipment		31,888			32,356
		45,466			75,183
Less accumulated depreciation and amortization		(26,466	)		(43,329	)
Property plant and equipment, net	$	19,000		$	31,854

New Accounting Pronouncement, Early Adoption [Table Text Block]

	December 27, 2014
	As Filed			Reclass			As Adjusted
Current deferred income tax assets	$	4,406		$	(4,406	)	$	-
Noncurrent deferred income tax assets		-			353			353
Current deferred income tax liabilities (included in other accrued liabilities)		(261	)		261			-
Noncurrent deferred income tax liabilities		(11,061	)		3,792			(7,269	)
Net deferred income tax assets (liabilities)	$	(6,916	)	$	-		$	(6,916	)

Note 2 - Discontinued Operations (Tables)

12 Months Ended

Dec. 26, 2015

Income Statement Information [Member]

Notes Tables

Disposal Groups, Including Discontinued Operations [Table Text Block]

	December 26,			December 27,			December 28,
	2015			2014			2013

Net sales:
Microwave equipment segment	$	6,965		$	16,694		$	17,063
Video camera segment		-			5,460			15,726
	$	6,965		$	22,154		$	32,789

Operating loss before income taxes:
Microwave equipment segment	$	(1,963	)	$	(10,305	)	$	(6,142	)
Video camera segment		-			(242	)		1,317
		(1,963	)		(10,547	)		(4,825	)
Loss from sale of BMS		(3,573	)		-			-
Gain from sale of Cohu Electronics		-			4,434			-
Loss before taxes		(5,536	)		(6,113	)		(4,825	)
Income tax provision		6			(41	)		45
Loss, net of tax	$	(5,542	)	$	(6,072	)	$	(4,870	)

Balance Sheet Information [Member]

Notes Tables

Disposal Groups, Including Discontinued Operations [Table Text Block]

	December 26, 2015		December 27, 2014
Assets:
Accounts receivable, net	$	-	$	3,156
Inventories		-		6,345
Other current assets		-		817
Total current assets	$	-	$	10,318
Liabilities:
Deferred Profit	$	-	$	504
Other accrued current liabilities		-		2,279
Total current liabilities		-		2,783
Noncurrent liabilities				706
Total liabilities	$	-	$	3,489

- 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.

+ References

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+ Details

Note 4 - Goodwill and Purchased Intangible Assets (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Goodwill [Table Text Block]

	Total Goodwill
Balance, December 28, 2013	$	67,983
Impact of currency exchange		(4,851	)
Balance, December 27, 2014		63,132
Impact of currency exchange		(2,868	)
Balance, December 26, 2015	$	60,264

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	December 26, 2015						December 27, 2014
					Remaining
	Gross Carrying		Accumulated		Useful Life		Gross Carrying		Accumulated
	Amount		Amortization		(years)		Amount		Amortization
Rasco technology	$	26,904	$	23,776		0.9	$	29,845	$	22,616
Ismeca technology		27,043		10,329		5.0		27,014		6,879
Trade names		5,547		92		14.7		5,723		-
	$	59,494	$	34,197			$	62,582	$	29,495

Note 5 - Financial Instruments Measured at Fair Value (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Available-for-sale Securities [Table Text Block]

	At December 26, 2015
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Foreign government security	$	650	$	-	$	-	$	650
Bank certificates of deposit		1,002		-		-		1,002
	$	1,652	$	-	$	-	$	1,652

	At December 27, 2014
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Municipal securities	$	155	$	-	$	-	$	155
Bank certificates of deposit		1,000		-		-		1,000
	$	1,155	$	-	$	-	$	1,155

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized		Estimated
(in thousands)	Cost		Fair Value
Due in one year or less	$	1,450	$	1,450
Due after one year through three years		202		202
	$	1,652	$	1,652

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	Fair value measurements at December 26, 2015 using:
							Total estimated
	Level 1		Level 2		Level 3		fair value
Cash	$	73,746	$	-	$	-	$	73,746
Foreign government security		-		650		-		650
Money market funds		-		41,624		-		41,624
Bank certificates of deposit		-		1,002		-		1,002
	$	73,746	$	43,276	$	-	$	117,022

	Fair value measurements at December 27, 2014 using:
							Total estimated
	Level 1		Level 2		Level 3		fair value
Cash	$	66,467	$	-	$	-	$	66,467
Municipal securities		-		155		-		155
Money market funds		-		4,418		-		4,418
Bank certificates of deposit		-		1,000		-		1,000
	$	66,467	$	5,573	$	-	$	72,040

- 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.

+ References + Details

Note 6 - Employee Benefit Plans (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

(in thousands)	2015			2014			2013
Service cost	$	856		$	749		$	841
Interest cost		311			491			398
Expected return on assets		(193	)		(343	)		(267	)
Settlements		235			-			-
Net periodic costs	$	1,209		$	897		$	972

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

(in thousands)	2015			2014
Change in projected benefit obligation:

Benefit obligation at beginning of year	$	(26,027	)	$	(23,850	)
Service cost		(856	)		(749	)
Interest cost		(311	)		(491	)
Actuarial gain (loss)		(660	)		(3,649	)
Participant contributions		(672	)		(728	)
Benefits paid		296			998
Plan change		558			-
Settlements		2,199			-
Foreign currency exchange adjustment		(10	)		2,442
Benefit obligation at end of year		(25,483	)		(26,027	)

Change in plan assets:

Fair value of plan assets at beginning of year		15,603			16,083
Return on assets, net of actuarial loss		277			652
Employer contributions		672			728
Participant contributions		672			728
Benefits paid		(296	)		(998	)
Settlements		(2,199	)		-
Foreign currency exchange adjustment		(13	)		(1,590	)
Fair value of plan assets at end of year		14,716			15,603

Net liability at end of year	$	(10,767	)	$	(10,424	)

Schedule of Assumptions Used [Table Text Block]

	2015			2014
Discount rate		1.0	%		1.3	%
Compensation increase		1.8	%		1.8	%

	2015			2014			2013
Discount rate		1.3	%		2.3	%		1.8	%
Rate of return on Assets		1.3	%		2.3	%		1.8	%
Compensation increase		1.8	%		2.0	%		2.0	%

Schedule of Net Funded Status [Table Text Block]

(in thousands)	2015			2014
Accumulated benefit obligation at beginning of year	$	2,428		$	2,021
Service cost		-			13
Interest cost		90			91
Actuarial loss		187			370
Benefits paid		(56	)		(67	)
Accumulated benefit obligation at end of year		2,649			2,428
Plan assets at end of year		-			-
Funded status	$	(2,649	)	$	(2,428	)

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Shares			Ex. Price		Shares			Ex. Price		Shares			Ex. Price
Outstanding, beginning of year		2,435		$	11.67		3,086		$	11.93		3,113		$	12.62
Granted		10		$	10.98		10		$	12.58		470		$	9.83
Exercised		(175	)	$	8.65		(237	)	$	8.43		(117	)	$	7.55
Cancelled		(305	)	$	16.07		(424	)	$	15.37		(380	)	$	16.37
Outstanding, end of year		1,965		$	11.25		2,435		$	11.67		3,086		$	11.93

Options exercisable at year end		1,673		$	11.47		1,901		$	12.08		2,195		$	12.46

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

			Options Outstanding						Options Exercisable
					Approximate
					Wt. Avg.
Range of			Number		Remaining		Wt. Avg.		Number		Wt. Avg.
Exercise Prices			Outstanding		Life (Years)		Ex. Price		Exercisable		Ex. Price
$7.32	-	$10.58		1,182		5.2	$	8.82		922	$	8.54
$10.59	-	$15.50		498		4.2	$	14.06		466	$	14.26
$15.51	-	$20.73		285		1.7	$	16.44		285	$	16.44
				1,965		4.4	$	11.25		1,673	$	11.47

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Units			Fair Value		Units			Fair Value		Units			Fair Value
Outstanding, beginning of year		1,026		$	9.54		887		$	9.46		615		$	10.54
Granted		482		$	10.54		497		$	10.07		531		$	8.80
Released		(339	)	$	9.63		(315	)	$	10.16		(223	)	$	10.86
Cancelled		(91	)	$	9.82		(43	)	$	9.41		(36	)	$	9.86
Outstanding, end of year		1,078		$	9.93		1,026		$	9.54		887		$	9.46

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Units			Fair Value		Units			Fair Value		Units			Fair Value
Outstanding, beginning of year		334		$	10.49		238		$	9.32		122		$	9.89
Granted		156		$	10.69		208		$	11.34		158		$	9.03
Released		(38	)	$	9.52		(38	)	$	9.52		(26	)	$	9.89
Cancelled		(76	)	$	9.86		(74	)	$	9.59		(16	)	$	9.89
Outstanding, end of year		376		$	10.80		334		$	10.49		238		$	9.32

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

Employee Stock Purchase Plan	2015			2014			2013
Dividend yield		2.2	%		2.4	%		2.6	%
Expected volatility		35.3	%		35.3	%		38.4	%
Risk-free interest rate		0.1	%		0.1	%		0.1	%
Expected term (years)		0.5			0.5			0.5
Weighted-average grant date fair value per share	$	2.71		$	2.52		$	2.32

Employee Stock Options	2015			2014			2013
Dividend yield		2.1	%		2.0	%		2.6	%
Expected volatility		39.1	%		42.5	%		44.9	%
Risk-free interest rate		1.6	%		1.9	%		1.1	%
Expected term (years)		5.9			5.9			6.4
Weighted-average grant date fair value per share	$	3.46		$	4.39		$	3.37

Restricted Stock Units		2015				2014				2013
Dividend yield			2.1	%			2.2	%			2.5	%

Performance Stock Units		2015				2014				2013
Dividend yield			2.1	%			2.2	%			2.5	%

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

(in thousands)	2015			2014			2013
Cost of sales	$	566		$	491		$	390
Research and development		1,092			1,858			1,623
Selling, general and administrative		5,097			4,039			3,098
Share-based compensation of continuing operations		6,755			6,388			5,111
Discontinued operations		138			388			357
Income tax benefit		(249	)		(204	)		-
Total share-based compensation, net of tax	$	6,644		$	6,572		$	5,468

Note 7 - Income Taxes (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

(in thousands)	2015		2014			2013
Current:
U.S. Federal	$	5	$	(307	)	$	(1,539	)
U.S. State		28		40			42
Foreign		1,956		4,088			780
Total current		1,989		3,821			(717	)
Deferred:
U.S. Federal		89		112			763
U.S. State		49		(17	)		24
Foreign		84		737			(2,443	)
Total deferred		222		832			(1,656	)
	$	2,211	$	4,653		$	(2,373	)

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

(in thousands)	2015			2014		2013
U.S.	$	(5,214	)	$	1,076	$	(23,193	)
Foreign		13,217			18,357		(7,728	)
Total	$	8,003		$	19,433	$	(30,921	)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

(in thousands)	2015			2014
Deferred tax assets:
Inventory, receivable and warranty reserves	$	8,207		$	9,585
Net operating loss carryforwards		7,605			8,266
Tax credit carryforwards		12,291			11,905
Accrued employee benefits		4,993			5,232
Deferred profit and gain on facility sale		6,084			1,091
Stock-based compensation		4,443			4,352
Acquisition basis differences		1,544			2,133
Other		265			608
Gross deferred tax assets		45,432			43,172
Less valuation allowance		(42,289	)		(37,023	)
Total deferred tax assets		3,143			6,149
Deferred tax liabilities:
Depreciation and fixed asset related		227			1,822
Acquisition basis differences		8,904			10,600
Other		563			643
Total deferred tax liabilities		9,694			13,065
Net deferred tax liabilities	$	(6,551	)	$	(6,916	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

(in thousands)	2015			2014			2013
Tax provision (credit) at U.S. 35% statutory rate	$	2,801		$	6,802		$	(10,822	)
State income taxes, net of federal tax benefit		(152	)		119			(1,089	)
Settlements, adjustments and releases from statute expirations		(104	)		(65	)		(849	)
Federal tax credits		(221	)		(244	)		(1,340	)
Stock-based compensation on which no tax benefit provided		156			160			168
Change in valuation allowance		2,181			437			9,574
Foreign income taxed at different rates		(2,601	)		(2,151	)		1,513
Other, net		151			(405	)		472
	$	2,211		$	4,653		$	(2,373	)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

(in thousands)	2015			2014			2013
Balance at beginning of year	$	10,841		$	10,483		$	6,080
Gross additions for tax positions of current year		215			761			933
Gross additions for tax positions of prior years		248			365			3,700
Reductions due to lapse of the statute of limitations		(243	)		(587	)		-
Foreign exchange rate impact		(617	)		(181	)		(230	)
Balance at end of year	$	10,444		$	10,841		$	10,483

Note 8 - Segment and Geographic Information (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	2015			2014			2013
Intel		18.0	%		15.7	%		18.5	%
NXP Semiconductors N.V. (1)		11.4	%		11.4	%		13.5	%

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

(in thousands)	2015		2014		2013
Malaysia	$	60,776	$	73,818	$	51,491
China		52,589		51,662		39,202
United States		50,704		72,266		39,504
Philippines		16,270		28,669		26,489
Rest of the World		89,315		90,214		57,825
Total	$	269,654	$	316,629	$	214,511

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

(in thousands)	2015		2014
Property, plant and equipment:
United States	$	3,054	$	18,986
Germany		6,882		7,484
Philippines		4,171		2,721
Malaysia		4,165		1,838
Rest of the World		728		825
Total, net	$	19,000	$	31,854

Goodwill and other intangible assets:
Germany	$	31,337	$	38,527
Switzerland		22,444		25,921
United States		17,241		17,241
Malaysia		6,995		6,988
Singapore		6,558		6,558
Rest of the World		986		984
Total, net	$	85,561	$	96,219

Note 9 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Operating Leases of Lessee Disclosure [Table Text Block]

(in thousands)		2016				2017				2018				2019				2020				Thereafter				Total
Non-cancelable operating leases		$	3,639			$	2,628			$	2,389			$	2,404			$	2,453			$	11,901			$	25,414

- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

+ References + Details

Note 10 - Guarantees (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

(in thousands)	2015			2014			2013
Beginning balance	$	5,848		$	4,673		$	4,206
Warranty accruals		6,747			6,176			4,814
Warranty payments		(7,709	)		(5,001	)		(6,180	)
Warranty liability assumed		-			-			1,833
Ending balance	$	4,886		$	5,848		$	4,673

Note 11 - Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

(in thousands)	Before Tax amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended December 28, 2013
Foreign currency translation adjustments	$	3,270		$	-		$	3,270
Adjustments related to postretirement benefits		1,889			(285	)		1,604
Change in unrealized gain/loss on investments		(14	)		8			(6	)
Other comprehensive income (loss)	$	5,145		$	(277	)	$	4,868
Year ended December 27, 2014
Foreign currency translation adjustments	$	(14,107	)	$	-		$	(14,107	)
Adjustments related to postretirement benefits		(3,809	)		551			(3,258	)
Other comprehensive income (loss)	$	(17,916	)	$	551		$	(17,365	)
Year ended December 26, 2015
Foreign currency translation adjustments	$	(11,000	)	$	-		$	(11,000	)
Adjustments related to postretirement benefits		(24	)		(34	)		(58	)
Other comprehensive income (loss)	$	(11,024	)	$	(34	)	$	(11,058	)

Condensed Statement of Comprehensive Income [Table Text Block]

(in thousands)	2015			2014
Accumulated net currency translation adjustments	$	(19,327	)	$	(8,327	)
Accumulated net adjustments related to postretirement benefits		(2,445	)		(2,387	)
Total accumulated other comprehensive loss	$	(21,772	)	$	(10,714	)

Note 12 - Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Quarterly Financial Information [Table Text Block]

Quarter		First (a)			Second (a)			Third (a)		Fourth (a)		Year
(in thousands, except per share data)

Net sales:	2015	$	63,447		$	75,211		$	67,512	$	63,484	$	269,654
	2014	$	60,170		$	74,299		$	91,573	$	90,587	$	316,629

Gross profit:	2015	$	20,145		$	25,702		$	22,794	$	20,397	$	89,038
	2014	$	20,030		$	24,263		$	32,952	$	28,727	$	105,972

Income (loss) from continuing operations	2015	$	(1,720	)	$	3,887		$	1,335	$	2,290	$	5,792
	2014	$	(2,707	)	$	2,200		$	10,012	$	5,275	$	14,780

Net income (loss)	2015	$	(2,740	)	$	(72	)	$	1,113	$	1,949	$	250
	2014	$	(3,348	)	$	4,163		$	7,519	$	374	$	8,708

Income (loss) per share (b):
Basic:
Income (loss) from continuing operations	2015	$	(0.07	)	$	0.15		$	0.05	$	0.09	$	0.22
	2014	$	(0.11	)	$	0.09		$	0.39	$	0.21	$	0.58

Net income (loss)	2015	$	(0.11	)	$	0.00		$	0.04	$	0.07	$	0.01
	2014	$	(0.13	)	$	0.16		$	0.30	$	0.01	$	0.34

Diluted:
Income (loss) from continuing operations	2015	$	(0.07	)	$	0.15		$	0.05	$	0.08	$	0.22
	2014	$	(0.11	)	$	0.09		$	0.38	$	0.20	$	0.57

Net income (loss)	2015	$	(0.11	)	$	0.00		$	0.04	$	0.07	$	0.01
	2014	$	(0.13	)	$	0.16		$	0.29	$	0.01	$	0.33

Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Summary of Valuation Allowance [Table Text Block]

			Additions			Additions
			(Reductions)			(Reductions)
	Balance at		Not			Charged					Balance
	Beginning		Charged			(Credited)			Deductions/		at End
Description	of Year		to Expense			to Expense			Write-offs		of Year

Allowance for doubtful accounts:

Year ended December 28, 2013	$	12	$	353	(2)	$	172		$	207	$	330

Year ended December 27, 2014	$	330	$	(1	) (1)	$	(126	)	$	24	$	179

Year ended December 26, 2015	$	179	$	1	(1)	$	19		$	128	$	71


Reserve for excess and obsolete inventories:

Year ended December 28, 2013	$	25,261	$	7,398	(3)	$	7,068		$	4,506	$	35,221

Year ended December 27, 2014	$	35,221	$	(762	) (1)	$	2,624		$	9,232	$	27,851

Year ended December 26, 2015	$	27,851	$	(648	) (1)	$	2,409		$	2,959	$	26,653

Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)		12 Months Ended
	Oct. 01, 2015	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Reserve for Excess and Obsolete Inventories [Member]
Valuation Allowances and Reserves, Charged to Cost and Expense		$ 2,400,000	$ 2,600,000	$ 7,100,000
Minimum [Member] \| Land, Buildings and Improvements [Member]
Property, Plant and Equipment, Useful Life		30 years
Minimum [Member] \| Building Improvements [Member]
Property, Plant and Equipment, Useful Life		5 years
Minimum [Member] \| Machinery, Equipment and Software [Member]
Property, Plant and Equipment, Useful Life		3 years
Minimum [Member]
Standard Product Warranty Term		1 year
Maximum [Member] \| Land, Buildings and Improvements [Member]
Property, Plant and Equipment, Useful Life		40 years
Maximum [Member] \| Building Improvements [Member]
Property, Plant and Equipment, Useful Life		15 years
Maximum [Member] \| Machinery, Equipment and Software [Member]
Property, Plant and Equipment, Useful Life		10 years
Maximum [Member]
Standard Product Warranty Term		3 years
Goodwill, Impairment Loss	$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		875,000	1,771,000
Allowance for Doubtful Accounts Receivable, Current		$ 100,000	$ 200,000
Depreciation		$ 4,200,000	4,800,000	$ 4,700,000
Number of Operating Segments		1
Percentage of Revenue Recognized upon Customer Acceptance		20.00%
Percentage of Revenue Recognized upon Shipment and Passage of Title		80.00%
Deferred Revenue		$ 5,000,000	10,700,000
Deferred Profit		3,730,000	6,941,000
Foreign Currency Transaction Gain (Loss), Realized		1,400,000	2,000,000
Accumulated Other Comprehensive Income (Loss), Net of Tax		(21,772,000)	(10,714,000)
Increase (Decrease) in Accumulated Other Comprehensive Income		$ 11,000,000	$ 14,100,000

Note 1 - Computation of Basic and Diluted Income (Loss) Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Weighted average common shares outstanding (in shares)	26,057	25,393	24,859
Effect of dilutive stock options and restricted stock units (in shares)	731	613
(in shares)	26,788	26,006	24,859

Note 1 - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Land and Land Improvements [Member]
Property, plant and equipment	$ 4,607	$ 11,762
Building and Building Improvements [Member]
Property, plant and equipment	8,971	31,065
Machinery and Equipment [Member]
Property, plant and equipment	31,888	32,356
Property, plant and equipment	45,466	75,183
Less accumulated depreciation and amortization	(26,466)	(43,329)
Property plant and equipment, net	$ 19,000	$ 31,854

Note 1 - Prior Year Reclassifications (Details) $ in Thousands	Dec. 27, 2014 USD ($)
Scenario, Previously Reported [Member] \| New Accounting Pronouncement, Early Adoption, Effect [Member]
Current deferred income tax assets	$ 4,406
Noncurrent deferred income tax assets
Current deferred income tax liabilities (included in other accrued liabilities)	(261)
Noncurrent deferred income tax liabilities	(11,061)
Net deferred income tax assets (liabilities)	(6,916)
Restatement Adjustment [Member] \| New Accounting Pronouncement, Early Adoption, Effect [Member]
Current deferred income tax assets	(4,406)
Noncurrent deferred income tax assets	353
Current deferred income tax liabilities (included in other accrued liabilities)	261
Noncurrent deferred income tax liabilities	3,792
Net deferred income tax assets (liabilities)
New Accounting Pronouncement, Early Adoption, Effect [Member]
Current deferred income tax assets
Noncurrent deferred income tax assets	353
Current deferred income tax liabilities (included in other accrued liabilities)
Noncurrent deferred income tax liabilities	(7,269)
Net deferred income tax assets (liabilities)	(6,916)
Noncurrent deferred income tax liabilities	(7,269)
Net deferred income tax assets (liabilities)	$ (6,916)

Note 2 - Discontinued Operations (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Broadcast Microwave Services, Inc. (“BMS”) [Member]
Proceeds from Divestiture of Businesses	$ 4,881
Disposal Group, Including Discontinued Operation, Contingent Consideration	2,500
Contingent Consideration Receivable, Fair Value	500
Cohu Electronics [Member]
Proceeds from Divestiture of Businesses		10,258
Disposal Group, Including Discontinued Operation, Contingent Consideration		500
Initial Cash Proceeds from Divestiture of Businesses		$ 9,500

Note 2 - Summary of Balance Sheet Information of Discontinued Video Camera Segment (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Broadcast Microwave Services, Inc. (“BMS”) [Member]
Accounts receivable, net		$ 3,156
Inventories		6,345
Other current assets		817
Total current assets		10,318
Deferred Profit		504
Other accrued current liabilities		2,279
Total current liabilities		2,783
Noncurrent liabilities		706
Total liabilities		3,489
Total current assets		10,318
Total current liabilities		2,783
Noncurrent liabilities		$ 706

Note 2 - Summary of Operating Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Broadcast Microwave Services, Inc. (“BMS”) [Member]
Net sales	$ 6,965	$ 16,694	$ 17,063
Operating loss before income taxes	(1,963)	(10,305)	(6,142)
Gain (loss) from disposal of segment	(3,573)
Cohu Electronics [Member]
Net sales		5,460	15,726
Operating loss before income taxes		(242)	1,317
Gain (loss) from disposal of segment		4,434
Net sales	6,965	22,154	32,789
Operating loss before income taxes	(1,963)	(10,547)	(4,825)
Gain (loss) from disposal of segment	(5,536)	(6,113)	(4,825)
Income tax provision	6	(41)	45
Loss, net of tax	$ (5,542)	$ (6,072)	$ (4,870)

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.12)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5C
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721675-107760

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.14)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e1012-107759

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3B
-URI http://asc.fasb.org/extlink&oid=51716988&loc=SL51721525-107759

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=51716988&loc=SL51721523-107759

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e957-107759

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 13
-Article 7

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 15
-Article 5

+ Details

Note 3 - Sale-leaseback of Poway Facility (Details Textual) $ in Thousands		12 Months Ended
	Dec. 04, 2015 USD ($)	Dec. 26, 2015 USD ($)	Dec. 27, 2014 USD ($)	Dec. 28, 2013 USD ($)
Lease 1 [Member] \| Sale-leaseback of Poway Facility [Member]
Lessee Leasing Arrangements, Operating Leases, Number of Renewal Options	2
Lessee Leasing Arrangements, Operating Leases, Term of Contract	10 years
Sale Leaseback Transaction, Annual Rental Payments	$ 1,600
Lessee Leasing Arrangements, Operating Leases, Adjustments and Pro Rata Share of Property Operating Costs	3.00%
Percentage of Facility to be Consolidated	43.00%
Lessee Leasing Arrangements, Operating Leases, Renewal Term	5 years
Lease 2 [Member] \| Sale-leaseback of Poway Facility [Member]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	1 year
Sale Leaseback Transaction, Annual Rental Payments	$ 600
Sale-leaseback of Poway Facility [Member]
Sale Leaseback Transaction, Gross Proceeds, Investing Activities	34,100
Sale Leaseback Transaction, Net Proceeds, Investing Activities	33,300
Sale Leaseback Transaction, Deferred Gain, Gross	18,500
Sale Leaseback Transaction, Current Period Gain Recognized	3,200
Sale Leaseback Transaction, Deferred Gain, Net	$ 15,300
Sale Leaseback Transaction, Deferred Gain, Amortization Period	10 years
Sale Leaseback Transaction, Net Proceeds, Investing Activities		$ 33,314
Sale Leaseback Transaction, Current Period Gain Recognized		$ 3,198

Note 4 - Goodwill and Purchased Intangible Assets (Details Textual) - USD ($) $ in Millions		12 Months Ended
	Sep. 24, 2015	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life	15 years	14 years 255 days
Amortization of Intangible Assets		$ 7.0	$ 7.8	$ 7.8
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		6.8
Finite-Lived Intangible Assets, Amortization Expense, Year Two		3.7
Finite-Lived Intangible Assets, Amortization Expense, Year Three		3.7
Finite-Lived Intangible Assets, Amortization Expense, Year Four		3.7
Finite-Lived Intangible Assets, Amortization Expense, after Year Five		3.7
Finite-Lived Intangible Assets, Amortization Expense, Year Five		$ 3.7

Note 4 - Changes in Carrying Value of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014
Balance	$ 63,132	$ 67,983
Impact of currency exchange	(2,868)	(4,851)
Balance	$ 60,264	$ 63,132

Note 4 - Purchased Intangible Assets, Subject to Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014
Rasco Technology [Member]
Gross Carrying Amount	$ 26,904	$ 29,845
Accumulated Amortization	$ 23,776	22,616
Finite-Lived Intangible Asset, Useful Life	328 days
Ismeca Technology [Member]
Gross Carrying Amount	$ 27,043	27,014
Accumulated Amortization	$ 10,329	6,879
Finite-Lived Intangible Asset, Useful Life	5 years
Trade Names [Member]
Gross Carrying Amount	$ 5,547	5,723
Accumulated Amortization	$ 92
Finite-Lived Intangible Asset, Useful Life	14 years 255 days
Gross Carrying Amount	$ 59,494	62,582
Accumulated Amortization	$ 34,197	$ 29,495

Note 5 - Short-term Investments by Security Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014
Foreign Government Debt Securities [Member]
Investments, Amortized Cost	$ 650
Investments, Gross Unrealized Gains
Investments, Gross Unrealized Losses
Short-term investments	650
Municipal Bonds [Member]
Investments, Amortized Cost		$ 155
Investments, Gross Unrealized Gains
Investments, Gross Unrealized Losses
Short-term investments		155
Certificates of Deposit [Member]
Investments, Amortized Cost	1,002	1,000
Investments, Gross Unrealized Gains
Investments, Gross Unrealized Losses
Short-term investments	1,002	1,000
Investments, Amortized Cost	1,652	1,155
Investments, Gross Unrealized Gains
Investments, Gross Unrealized Losses
Short-term investments	$ 1,652	$ 1,155

Note 5 - Effective Maturities of Short-term Investments (Details) $ in Thousands	Dec. 26, 2015 USD ($)
Due in one year or less, amortized cost	$ 1,450
Due in one year or less, estimated fair value	1,450
Due after one year through three years, amortized cost	202
Due after one year through three years, estimated fair value	202
	1,652
	$ 1,652

Note 5 - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Fair Value, Inputs, Level 1 [Member] \| Cash [Member]
Assets fair value, recurring	$ 73,746	$ 66,467
Fair Value, Inputs, Level 1 [Member] \| Foreign Government Debt Securities [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 1 [Member] \| Municipal Securities [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 1 [Member] \| Money Market Funds [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 1 [Member] \| Certificates of Deposit [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 1 [Member]
Assets fair value, recurring	73,746	66,467
Fair Value, Inputs, Level 2 [Member] \| Cash [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 2 [Member] \| Foreign Government Debt Securities [Member]
Assets fair value, recurring	650
Fair Value, Inputs, Level 2 [Member] \| Municipal Securities [Member]
Assets fair value, recurring		155
Fair Value, Inputs, Level 2 [Member] \| Money Market Funds [Member]
Assets fair value, recurring	41,624	4,418
Fair Value, Inputs, Level 2 [Member] \| Certificates of Deposit [Member]
Assets fair value, recurring	1,002	1,000
Fair Value, Inputs, Level 2 [Member]
Assets fair value, recurring	43,276	5,573
Fair Value, Inputs, Level 3 [Member] \| Cash [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 3 [Member] \| Foreign Government Debt Securities [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 3 [Member] \| Municipal Securities [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 3 [Member] \| Money Market Funds [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 3 [Member] \| Certificates of Deposit [Member]
Assets fair value, recurring
Fair Value, Inputs, Level 3 [Member]
Assets fair value, recurring
Cash [Member]
Assets fair value, recurring	73,746	66,467
Foreign Government Debt Securities [Member]
Assets fair value, recurring	650
Municipal Securities [Member]
Assets fair value, recurring		155
Money Market Funds [Member]
Assets fair value, recurring	41,624	4,418
Certificates of Deposit [Member]
Assets fair value, recurring	1,002	1,000
Assets fair value, recurring	$ 117,022	$ 72,040

Note 6 - Employee Benefit Plans (Details Textual) - USD ($)		12 Months Ended
	May 12, 2015	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2015	Dec. 31, 2014
Swiss Plan [Member]
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax		$ (1,800,000)	$ (2,000,000)
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		700,000
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months		600,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Two		600,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Three		700,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Four		800,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Five		900,000
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter		5,200,000
Defined Benefit Plan, Net Periodic Benefit Cost		$ 1,209,000	$ 897,000	$ 972,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate					1.00%	1.30%
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	750,000
Stock Issued During Period Shares Employee Stock Purchase Plans Future Issuance		2,650,000
Percentage of Fair Value to Determine Price of Common Stock		85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans		122,528	138,831	163,120
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		811,063
Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	1,500,000
Percentage of Fair Value to Determine Price of Common Stock		100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		2,255,701
Debt Securities [Member]
Defined Benefit Plan, Target Plan Asset Allocations		75.00%
Real Estate Investments [Member]
Defined Benefit Plan, Target Plan Asset Allocations		12.00%
Alternative Investments [Member]
Defined Benefit Plan, Target Plan Asset Allocations		8.00%
Cash [Member]
Defined Benefit Plan, Target Plan Asset Allocations		2.00%
Equity Securities [Member]
Defined Benefit Plan, Target Plan Asset Allocations		3.00%
Post-retirement Health benefits [Member]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		$ 100,000
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months		100,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Two		100,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Three		100,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Four		100,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Five		100,000
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter		700,000
Defined Benefit Plan, Net Periodic Benefit Cost		$ 100,000		$ 100,000
Defined Benefit Plan, Net Periodic Benefit Income			$ 100,000
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
Equity Based Performance Stock Units [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue		0.00%
Equity Based Performance Stock Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue		150.00%
Equity Based Performance Stock Units [Member] \| Vest on Second and Third Anniversary Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			50.00%
Equity Based Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		3 years
Unvested Stock Options [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options		$ 600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		1 year 73 days
Unvested Restricted Stock Units [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		2 years 109 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options		$ 10,000,000
Deferred Compensation Liability, Current		2,600,000	$ 2,600,000
Cash Surrender Value of Life Insurance		2,300,000	$ 2,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value		1,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value		1,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value		$ 1,200,000
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay		3.00%	3.00%	1.50%
Defined Contribution Plan, Employer Discretionary Contribution Amount		$ 700,000	$ 700,000	$ 300,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		4.20%	3.80%	4.60%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year		7.50%
Defined Benefit Plan Decrease In Assumed Healthcare Cost Trend Rate Percentage		0.30%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate		4.50%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate		2025
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components		$ 14,000
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components		11,000
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation		411,000
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation		338,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		$ 700,000	$ 700,000	$ 400,000

Note 6 - Net Periodic Benefit Cost of Swiss Plan (Details) - Swiss Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Service cost	$ 856	$ 749	$ 841
Interest cost	311	491	398
Expected return on assets	(193)	(343)	(267)
Settlements	235
Net periodic costs	$ 1,209	$ 897	$ 972

Note 6 - Benefit Obligation, Fair Value of Plan Assets, Funded Status and Liability of Swiss Plan (Details) - Swiss Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Change in projected benefit obligation:
Benefit obligation at beginning of year	$ 26,027	$ 23,850
Service cost	(856)	(749)	$ (841)
Interest cost	(311)	(491)	(398)
Actuarial gain (loss)	(660)	(3,649)
Participant contributions	(672)	(728)
Benefits paid	296	998
Plan change	558
Settlements	2,199
Foreign currency exchange adjustment	(10)	2,442
Benefit obligation at end of year	25,483	26,027	23,850
Change in plan assets:
Fair value of plan assets at beginning of year	15,603	16,083
Return on assets, net of actuarial loss	277	652
Employer contributions	672	728
Participant contributions	672	728
Benefits paid	(296)	(998)
Settlements	(2,199)
Foreign currency exchange adjustment	(13)	(1,590)
Fair value of plan assets at end of year	14,716	15,603	$ 16,083
Net liability at end of year	$ (10,767)	$ (10,424)

Note 6 - Weighted-average Actuarial Assumptions to Determine Benefit Obligation and Net Periodic Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Swiss Plan [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	1.00%	1.30%
Compensation increase	1.80%	1.80%
Discount rate	1.30%	2.30%	1.80%
Rate of return on Assets	1.30%	2.30%	1.80%
Compensation increase	1.80%	2.00%	2.00%

Note 6 - Post-retirement Benefit Obligation to Funded Status and Liability (Details) - Defined Benefit Retirement Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014
Accumulated benefit obligation at beginning of year	$ 2,428	$ 2,021
Service cost		13
Interest cost	90	91
Actuarial gain (loss)	187	370
Benefits paid	(56)	(67)
Accumulated benefit obligation at end of year	2,649	2,428
Plan assets at end of year
Funded status	$ (2,649)	$ (2,428)

Note 6 - Stock Option Activity under Share-based Compensation Plans (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Outstanding, beginning of year (in shares)	2,435	3,086	3,113
Outstanding, beginning of year (in dollars per share)	$ 11.67	$ 11.93	$ 12.62
Granted (in shares)	10	10	470
Granted (in dollars per share)	$ 10.98	$ 12.58	$ 9.83
Exercised (in shares)	(175)	(237)	(117)
Exercised (in dollars per share)	$ 8.65	$ 8.43	$ 7.55
Cancelled (in shares)	(305)	(424)	(380)
Cancelled (in dollars per share)	$ 16.07	$ 15.37	$ 16.37
Outstanding, end of year (in shares)	1,965	2,435	3,086
Outstanding, end of year (in dollars per share)	$ 11.25	$ 11.67	$ 11.93
Options exercisable at year end (in shares)	1,673	1,901	2,195
Options exercisable at year end (in dollars per share)	$ 11.47	$ 12.08	$ 12.46

Note 6 - Stock Options Outstanding and Exercisable (Details) shares in Thousands	12 Months Ended
	Dec. 26, 2015 $ / shares shares
Range 1 [Member]
Range of Exercise Prices, Lower (in dollars per share)	$ 7.32
Range of Exercise Prices, Upper (in dollars per share)	$ 10.58
Number Outstanding (in shares) \| shares	1,182
Options Outstanding, Weighted Average Remaining Life	5 years 73 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 8.82
Options Exercisable (in shares) \| shares	922
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 8.54
Range 2 [Member]
Range of Exercise Prices, Lower (in dollars per share)	10.59
Range of Exercise Prices, Upper (in dollars per share)	$ 15.50
Number Outstanding (in shares) \| shares	498
Options Outstanding, Weighted Average Remaining Life	4 years 73 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 14.06
Options Exercisable (in shares) \| shares	466
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 14.26
Range 3 [Member]
Range of Exercise Prices, Lower (in dollars per share)	15.51
Range of Exercise Prices, Upper (in dollars per share)	$ 20.73
Number Outstanding (in shares) \| shares	285
Options Outstanding, Weighted Average Remaining Life	1 year 255 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 16.44
Options Exercisable (in shares) \| shares	285
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 16.44
Number Outstanding (in shares) \| shares	1,965
Options Outstanding, Weighted Average Remaining Life	4 years 146 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 11.25
Options Exercisable (in shares) \| shares	1,673
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 11.47

Note 6 - Restricted Stock Unit Activity under Share-based Compensation Plans (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Outstanding, beginning of year, Units (in shares)	1,026	887	615
Outstanding, beginning of year, Wt. Avg. Fair Value (in dollars per share)	$ 9.54	$ 9.46	$ 10.54
Granted, Units (in shares)	482	497	531
Granted, Wt. Avg. Fair Value (in dollars per share)	$ 10.54	$ 10.07	$ 8.80
Released, Units (in shares)	(339)	(315)	(223)
Released, Wt. Avg. Fair Value (in dollars per share)	$ 9.63	$ 10.16	$ 10.86
Cancelled, Units (in shares)	(91)	(43)	(36)
Cancelled, Wt. Avg. Fair Value (in dollars per share)	$ 9.82	$ 9.41	$ 9.86
Outstanding, end of year, Units (in shares)	1,078	1,026	887
Outstanding, end of year, Wt. Avg. Fair Value (in dollars per share)	$ 9.93	$ 9.54	$ 9.46

Note 6 - Performance Based Stock Unit Activity Under Share-based Compensation Plans (Details) - Equity Based Performance Stock Units [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Outstanding, beginning of year, Units (in shares)	334	238	122
Outstanding, beginning of year, Wt. Avg. Fair Value (in dollars per share)	$ 10.49	$ 9.32	$ 9.89
Granted, Units (in shares)	156	208	158
Granted, Wt. Avg. Fair Value (in dollars per share)	$ 10.69	$ 11.34	$ 9.03
Released, Units (in shares)	(38)	(38)	(26)
Released, Wt. Avg. Fair Value (in dollars per share)	$ 9.52	$ 9.52	$ 9.89
Cancelled, Units (in shares)	(76)	(74)	(16)
Cancelled, Wt. Avg. Fair Value (in dollars per share)	$ 9.86	$ 9.59	$ 9.89
Outstanding, end of year, Units (in shares)	376	334	238
Outstanding, end of year, Wt. Avg. Fair Value (in dollars per share)	$ 10.80	$ 10.49	$ 9.32

Note 6 - Weighted-average Assumptions to Value Share-based Awards Granted (Details) - $ / shares	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Employee Stock Purchase Plan [Member]
Dividend yield	2.20%	2.40%	2.60%
Expected volatility	35.30%	35.30%	38.40%
Risk-free interest rate	0.10%	0.10%	0.10%
Expected term (years)	182 days	182 days	182 days
Weighted-average grant date fair value per share (in dollars per share)	$ 2.71	$ 2.52	$ 2.32
Employee Stock Option [Member]
Dividend yield	2.10%	2.00%	2.60%
Expected volatility	39.10%	42.50%	44.90%
Risk-free interest rate	1.60%	1.90%	1.10%
Expected term (years)	5 years 328 days	5 years 328 days	6 years 146 days
Weighted-average grant date fair value per share (in dollars per share)	$ 3.46	$ 4.39	$ 3.37
Restricted Stock Units (RSUs) [Member]
Dividend yield	2.10%	2.20%	2.50%
Performance Stock Units [Member]
Dividend yield	2.10%	2.20%	2.50%

Note 6 - Reported Share-based Compensation in Consolidated Financial Statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Cost of Sales [Member]
Share-based compensation of continuing operations	$ 566	$ 491	$ 390
Research and Development Expense [Member]
Share-based compensation of continuing operations	1,092	1,858	1,623
Selling, General and Administrative Expenses [Member]
Share-based compensation of continuing operations	5,097	4,039	3,098
Share-based compensation of continuing operations	6,755	6,388	5,111
Discontinued operations	138	388	357
Income tax benefit	(249)	(204)
Total share-based compensation, net of tax	$ 6,644	$ 6,572	$ 5,468

Note 7 - Income Taxes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Domestic Tax Authority [Member]
Operating Loss Carryforwards	$ 19,300
Tax Credit Carryforward, Amount	6,700
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	21,300
Tax Credit Carryforward, Amount	13,600
Foreign Tax Authority [Member]
Operating Loss Carryforwards	$ 1,600
Minimum [Member]
Collection Term Range	4 years
Maximum [Member]
Collection Term Range	10 years
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 1,400	$ 1,400
Cumulative Three Year Pre-tax Income (Loss)	(27,300)
Deferred Tax Assets, Valuation Allowance	42,289	37,023
Income Tax Credits and Adjustments	400	500	$ 700
Undistributed Earnings of Foreign Subsidiaries	41,000
Increase (Decrease) of Net Income Due to Impact of Tax Holidays	$ 800
Increase (Decrease) of Earning Per Share Due To Impact Of Tax Holidays	$ 0.03
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 5,600	$ 6,200
Decrease in Unrecognized Tax Benefits is Reasonably Possible	500
Unrecognized Tax Benefits, Interest Expense, Net of Accrued Interest Reversed	$ 100		$ (100)

Note 7 - Components of Provision (Benefit) for Income Taxes for Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
U.S. Federal	$ 5	$ (307)	$ (1,539)
U.S. State	28	40	42
Foreign	1,956	4,088	780
Total current	1,989	3,821	(717)
U.S. Federal	89	112	763
U.S. State	49	(17)	24
Foreign	84	737	(2,443)
Total deferred	222	832	(1,656)
	$ 2,211	$ 4,653	$ (2,373)

Note 7 - Income (Loss) Before Income Taxes from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
U.S.	$ (5,214)	$ 1,076	$ (23,193)
Foreign	13,217	18,357	(7,728)
Total	$ 8,003	$ 19,433	$ (30,921)

Note 7 - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Inventory, receivable and warranty reserves	$ 8,207	$ 9,585
Net operating loss carryforwards	7,605	8,266
Tax credit carryforwards	12,291	11,905
Accrued employee benefits	4,993	5,232
Deferred profit and gain on facility sale	6,084	1,091
Stock-based compensation	4,443	4,352
Acquisition basis differences	1,544	2,133
Other	265	608
Gross deferred tax assets	45,432	43,172
Less valuation allowance	(42,289)	(37,023)
Total deferred tax assets	3,143	6,149
Depreciation and fixed asset related	227	1,822
Acquisition basis differences	8,904	10,600
Other	563	643
Total deferred tax liabilities	9,694	13,065
Net deferred income tax assets (liabilities)	$ (6,551)	$ (6,916)

Note 7 - Reconciliation of Income Tax Computed at U.S. Federal Statutory Tax Rate to Provision (Benefit) for Income Taxes for Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Tax provision (credit) at U.S. 35% statutory rate	$ 2,801	$ 6,802	$ (10,822)
State income taxes, net of federal tax benefit	(152)	119	(1,089)
Settlements, adjustments and releases from statute expirations	(104)	(65)	(849)
Federal tax credits	(221)	(244)	(1,340)
Stock-based compensation on which no tax benefit provided	156	160	168
Change in valuation allowance	2,181	437	9,574
Foreign income taxed at different rates	(2,601)	(2,151)	1,513
Other, net	151	(405)	472
	$ 2,211	$ 4,653	$ (2,373)

Note 7 - Reconciliation of Income Tax Computed at U.S. Federal Statutory Tax Rate to Provision (Benefit) for Income Taxes for Continuing Operations (Details) (Parentheticals)	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
U.S. Federal statutory tax rate	35.00%	35.00%	35.00%

Note 7 - Reconciliation of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Balance at beginning of year	$ 10,841	$ 10,483	$ 6,080
Gross additions for tax positions of current year	215	761	933
Gross additions for tax positions of prior years	248	365	3,700
Reductions due to lapse of the statute of limitations	(243)	(587)
Foreign exchange rate impact	(617)	(181)	(230)
Balance at end of year	$ 10,444	$ 10,841	$ 10,483

Note 8 - Segment and Geographic Information (Details Textual)	12 Months Ended
	Dec. 26, 2015
Number of Operating Segments	1

Note 8 - Customers Comprising 10% of Consolidated Sales (Details) - Semiconductor Equipment [Member] - Sales Revenue, Net [Member] - Customer Concentration Risk [Member]

12 Months Ended

Dec. 26, 2015

Dec. 27, 2014

Dec. 28, 2013

Intel [Member]

Net sales percentage

18.00%

15.70%

18.50%

NXP Semiconductors N.V. [Member]

Net sales percentage

^[1]

11.40%

13.50%

[1]	The merger of NXP Semiconductors N.V. and Freescale Semiconductor, Ltd. was completed on December 7, 2015. Sales to these customers have been combined for all periods presented.

Note 8 - Summary of Net Sales to Customers, Attributed to Countries (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Malaysia [Member]
Net sales	$ 60,776	$ 73,818	$ 51,491
CHINA
Net sales	52,589	51,662	39,202
UNITED STATES
Net sales	50,704	72,266	39,504
PHILIPPINES
Net sales	16,270	28,669	26,489
Rest of the World [Member]
Net sales	89,315	90,214	57,825
Net sales	$ 269,654	$ 316,629	$ 214,511

Note 8 - Summary of Property, Plant and Equipment and Other Long Lived Assets in Geographical Area (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
UNITED STATES
Net property, plant and equipment	$ 3,054	$ 18,986
Goodwill and other intangible assets, net	17,241	17,241
GERMANY
Net property, plant and equipment	6,882	7,484
Goodwill and other intangible assets, net	31,337	38,527
PHILIPPINES
Net property, plant and equipment	4,171	2,721
Malaysia [Member]
Net property, plant and equipment	4,165	1,838
Goodwill and other intangible assets, net	6,995	6,988
Rest of the World [Member]
Net property, plant and equipment	728	825
Goodwill and other intangible assets, net	986	984
SWITZERLAND
Goodwill and other intangible assets, net	22,444	25,921
SINGAPORE
Goodwill and other intangible assets, net	6,558	6,558
Net property, plant and equipment	19,000	31,854
Goodwill and other intangible assets, net	$ 85,561	$ 96,219

Note 9 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Operating Leases, Rent Expense	$ 1.8	$ 1.8	$ 1.7

Note 9 - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 26, 2015 USD ($)
2016	$ 3,639
2017	2,628
2018	2,389
2019	2,404
2020	2,453
Thereafter	11,901
Total	$ 25,414

Note 10 - Guarantees (Details Textual) SFr in Millions	Dec. 26, 2015 CHF (SFr)	Dec. 26, 2015 USD ($)	Dec. 27, 2014 USD ($)
Guarantor Obligations, Current Carrying Value		$ 0
Long-term Line of Credit		0	$ 0
Product Warranty Accrual, Noncurrent		1,100,000	$ 1,000,000
Guarantor Obligations, Maximum Exposure, Undiscounted		$ 200,000
Line of Credit Facility, Maximum Borrowing Capacity \| SFr	SFr 2.5

- 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.

+ References + Details

Note 10 - Changes in Accrued Warranty (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Beginning balance	$ 5,848	$ 4,673	$ 4,206
Warranty accruals	6,747	6,176	4,814
Warranty payments	(7,709)	(5,001)	(6,180)
Warranty liability assumed			1,833
Ending balance	$ 4,886	$ 5,848	$ 4,673

Note 11 - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Foreign currency translation adjustments	$ (11,000)	$ (14,107)	$ 3,270
Foreign currency translation adjustments
Foreign currency translation adjustments	(11,000)	(14,107)	3,270
Adjustments related to postretirement benefits	(24)	(3,809)	1,889
Adjustments related to postretirement benefits	(34)	551	(285)
Adjustments related to postretirement benefits	58	3,258	(1,604)
Change in unrealized gain/loss on investments			(14)
Change in unrealized gain/loss on investments			8
Change in unrealized gain/loss on investments			(6)
Other comprehensive income (loss)	(11,024)	(17,916)	5,145
Other comprehensive income (loss)	(34)	551	(277)
Other comprehensive income (loss)	$ (11,058)	$ (17,365)	$ 4,868

Note 11 - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Accumulated net currency translation adjustments	$ (19,327)	$ (8,327)
Accumulated net adjustments related to postretirement benefits	(2,445)	(2,387)
Total accumulated other comprehensive loss	$ (21,772)	$ (10,714)

- 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.

+ References + Details

Note 12 - Summary of Quarterly Financial Data (Details) - USD ($)
$ in Thousands

3 Months Ended

12 Months Ended

Dec. 26, 2015

^[1]

Sep. 26, 2015

^[1]

Jun. 27, 2015

^[1]

Mar. 28, 2015

^[1]

Dec. 27, 2014

^[1]

Sep. 27, 2014

^[1]

Jun. 28, 2014

^[1]

Mar. 29, 2014

^[1]

Dec. 26, 2015

Dec. 27, 2014

Net sales

$ 63,484

$ 67,512

$ 75,211

$ 63,447

$ 90,587

$ 91,573

$ 74,299

$ 60,170

$ 269,654

$ 316,629

Gross profit

20,397

22,794

25,702

20,145

28,727

32,952

24,263

20,030

89,038

105,972

Income (loss) from continuing operations

2,290

1,335

3,887

(1,720)

5,275

10,012

2,200

(2,707)

5,792

14,780

Net loss

$ 1,949

$ 1,113

$ (72)

$ (2,740)

$ 374

$ 7,519

$ 4,163

$ (3,348)

$ 250

$ 8,708

Income (loss) from continuing operations (in dollars per share)

$ 0.09

^[2]

$ 0.05

^[2]

$ 0.15

^[2]

$ (0.07)

^[2]

$ 0.21

^[2]

$ 0.39

^[2]

$ 0.09

^[2]

$ (0.11)

^[2]

$ 0.22

$ 0.58

Net income (loss) (in dollars per share)

0.07

^[2]

0.04

^[2]

(0.11)

^[2]

0.01

^[2]

0.30

^[2]

0.16

^[2]

(0.13)

^[2]

0.01

0.34

Income (loss) from continuing operations (in dollars per share)

0.08

^[2]

0.05

^[2]

0.15

^[2]

(0.07)

^[2]

0.20

^[2]

0.38

^[2]

0.09

^[2]

(0.11)

^[2]

0.22

0.57

Net income (loss) (in dollars per share)

$ 0.07

^[2]

$ 0.04

^[2]

$ 0

^[2]

$ (0.11)

^[2]

$ 0.01

^[2]

$ 0.29

^[2]

$ 0.16

^[2]

$ (0.13)

^[2]

$ 0.01

$ 0.33

[1]	All quarters presented above were comprised of 13 weeks.
[2]	The sum of the four quarters may not agree to the year total due to rounding within a quarter and the inclusion or exclusion of common stock equivalents.

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Schedule II - Valuation and Qualifying Accounts (Details Textual) $ in Millions	12 Months Ended
	Dec. 28, 2013 USD ($)
Allowance for Doubtful Accounts [Member]
Amount Includes from Acquisition and Foreign Currency Impact	$ 0.4
Inventory Valuation Reserve [Member]
Amount Includes from Acquisition and Foreign Currency Impact	$ 6.8

Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 26, 2015

Dec. 27, 2014

Dec. 28, 2013

Allowance for Doubtful Accounts [Member]

Balance

$ 179

$ 330

$ 12

Additions (Reductions) Not Charged to Expense

^[1]

(1)

^[1]

353

^[2]

Additions (Reductions) Charged (Credited) to Expense

(126)

172

Deductions/ Write-offs

128

207

Balance

179

330

Inventory Valuation Reserve [Member]

Balance

27,851

35,221

25,261

Additions (Reductions) Not Charged to Expense

(648)

^[1]

(762)

^[1]

7,398

^[3]

Additions (Reductions) Charged (Credited) to Expense

2,409

2,624

7,068

Deductions/ Write-offs

2,959

9,232

4,506

Balance

$ 26,653

$ 27,851

$ 35,221

[1]	Changes in reserve balances resulting from foreign currency impact.
[2]	Includes $0.4 million resulting from Ismeca Acquisition on December 31, 2012 and foreign currency impact.
[3]	Includes $6.8 million resulting from Ismeca Acquisition on December 31, 2012, foreign currency impact and reclass from other reserves.