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Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 27, 2014	Oct. 31, 2014
Document Information [Line Items]
Entity Registrant Name	LATTICE SEMICONDUCTOR CORP
Entity Central Index Key	0000855658
Document Type	10-Q
Document Period End Date	Sep. 27, 2014
Amendment Flag	false
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--01-03
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding (actual number)		118,228,881

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Income Statement [Abstract]
Revenue	$ 86,570	$ 87,154	$ 282,527	$ 243,006
Costs and expenses:
Cost of products sold	35,759	40,778	122,603	113,365
Research and development	22,053	20,254	65,594	58,635
Selling, general and administrative	17,645	16,385	55,226	49,955
Amortization of intangible assets	737	737	2,211	2,223
Restructuring charges	2	85	16	257
Costs and expenses	76,196	78,239	245,650	224,435
Income from operations	10,374	8,915	36,877	18,571
Other income, net	53	346	1,268	240
Income before income taxes	10,427	9,261	38,145	18,811
Provision for income taxes	1,021	417	4,984	3,037
Net income	$ 9,406	$ 8,844	$ 33,161	$ 15,774
Net income per share:
Basic (in dollars per share)	$ 0.08	$ 0.08	$ 0.28	$ 0.14
Diluted (in dollars per share)	$ 0.08	$ 0.08	$ 0.28	$ 0.13
Shares used in per share calculations:
Basic (in shares)	118,643	116,055	117,661	115,730
Diluted (in shares)	120,970	117,349	120,449	117,093

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 9,406	$ 8,844	$ 33,161	$ 15,774
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized (loss) gain related to marketable securities, net	(210)	221	(280)	(11)
Realized gain on sale of auction rate securities, previously unrealized, net of tax	0	0	(1,147)	0
Less: reclassification adjustment for (gains) losses included in other income, net	(1)	1	98	303
Translation adjustment	(159)	225	579	(205)
Comprehensive income	$ 9,036	$ 9,291	$ 32,411	$ 15,861

- Definition

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

+ References + Details

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 27, 2014	Dec. 28, 2013
Current assets:
Cash and cash equivalents	$ 123,007	$ 114,310
Short-term marketable securities	134,131	101,505
Accounts receivable, net	49,762	50,085
Inventories	65,074	46,222
Prepaid expenses and other current assets	16,634	13,679
Total current assets	388,608	325,801
Property and equipment, less accumulated depreciation	40,070	41,719
Long-term marketable securities	0	5,241
Other long-term assets	9,561	6,120
Intangible assets, net of amortization	10,274	12,484
Goodwill	44,808	44,808
Deferred income taxes	8,824	11,703
Total assets	502,145	447,876
Current liabilities:
Accounts payable and accrued expenses	36,929	37,454
Accrued payroll obligations	12,320	13,659
Deferred income and allowances on sales to sell-through distributors	11,294	7,495
Total current liabilities	60,543	58,608
Long-term liabilities	7,173	3,588
Total liabilities	67,716	62,196
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $.01 par value, 300,000,000 shares authorized; 118,893,494 issued, 118,666,983 outstanding as of September 27, 2014 and 115,671,000 shares issued and outstanding as of December 28, 2013	1,189	1,157
Paid-in capital	644,867	626,861
Treasury stock, at cost	(1,700)	0
Accumulated deficit	(209,032)	(242,193)
Accumulated other comprehensive loss	(895)	(145)
Total stockholders' equity	434,429	385,680
Total liabilities and stockholders' equity	$ 502,145	$ 447,876

Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 27, 2014	Dec. 28, 2013
Statement of Financial Position [Abstract]
Preferred stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	118,893,494	115,671,000
Common stock, shares outstanding	118,666,983	115,671,000

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
Cash flows from operating activities:
Net Income	$ 33,161	$ 15,774
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,884	15,173
Change in deferred income tax provision	3,827	1,886
Gain on sale of auction rate securities	(1,698)	0
Stock-based compensation	9,543	6,985
Changes in assets and liabilities:
Accounts receivable, net	323	(6,044)
Inventories	(18,852)	1,899
Prepaid expenses and other current assets	(3,289)	(2,177)
Accounts payable and accrued expenses	(3,045)	(1,354)
Accrued payroll obligations	(1,339)	4,957
Deferred income and allowances on sales to sell-through distributors	3,799	7,034
Net cash provided by operating activities	39,314	44,133
Cash flows from investing activities:
Proceeds from sales or maturities of short-term marketable securities	83,615	39,176
Proceeds from sales of auction rate securities	5,488	0
Purchase of marketable securities	(116,421)	(64,303)
Capital expenditures	(6,873)	(10,237)
Other investing activities, primarily time based software licenses	(3,800)	(5,939)
Net cash used in investing activities	(37,991)	(41,303)
Cash flows from financing activities:
Net share settlement upon issuance of RSUs	(2,682)	(581)
Purchase of treasury stock	(1,700)	(2,452)
Net proceeds from issuance of common stock	11,177	2,642
Net cash provided by (used in) financing activities	6,795	(391)
Effect of exchange rate change on cash	579	(205)
Net increase in cash and cash equivalents	8,697	2,234
Beginning cash and cash equivalents	114,310	118,536
Ending cash and cash equivalents	123,007	120,770
Supplemental cash flow information:
Unrealized (loss) gain related to marketable securities, net, included in Accumulated other comprehensive income	(182)	292
Income taxes paid, net of refunds	1,090	1,081
Increase in fixed assets related to asset retirement obligations	249	0
Accrued purchases of plant and equipment	$ (84)	$ (545)

Basis of Presentation and Significant Accounting Policies

9 Months Ended

Sep. 27, 2014

Accounting Policies [Abstract]

Basis of Presentation and Significant Accounting Policies

Basis of Presentation and Significant Accounting Policies:

The accompanying Consolidated Financial Statements are unaudited and have been prepared by Lattice Semiconductor Corporation (“Lattice,” the “Company,” “we,” “us,” or “our”) pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and in our opinion include all adjustments, consisting of normal recurring adjustments, necessary for the fair statement of results for the interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") have been condensed or omitted pursuant to such rules and regulations. These Consolidated Financial Statements should be read in conjunction with our audited financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended December 28, 2013.

We report based on a 52 or 53-week fiscal year ending on the Saturday closest to December 31. Our fiscal 2014 will be a 53-week year and will end on January 3, 2015. The fourth quarter of our fiscal 2014 will be 14 weeks. Our third quarter of fiscal 2014 and third quarter of fiscal 2013 ended on September 27, 2014 and September 28, 2013, respectively. All references to quarterly, three or nine months ended financial results are references to the results for the relevant fiscal period.

Principles of Consolidation

The accompanying Consolidated Financial Statements include the accounts of Lattice and its subsidiaries, all of which are wholly-owned, after the elimination of all intercompany balances and transactions. Certain balances in prior fiscal years have been reclassified to conform to the presentation adopted in the current year.

Cash Equivalents and Marketable Securities

We consider all investments that are readily convertible into cash and have original maturities of three months or less, to be cash equivalents. Cash equivalents consist primarily of highly liquid investments in time deposits or money market accounts and are carried at cost. We account for marketable securities as available for sale with unrealized gains or losses recorded to Accumulated other comprehensive loss, unless losses are considered other than temporary, in which case, losses are charged to the Consolidated Statements of Operations and Statements of Comprehensive Income.

Fair Value of Financial Instruments

We invest in various financial instruments including corporate and government bonds, notes and commercial paper. In the past we have also invested in auction rate securities. The Company values these instruments at their fair value and monitors their portfolio for impairment on a periodic basis. In the event that the carrying value of an investment exceeds its fair value and the decline in value is determined to be other than temporary, the Company records an impairment charge and establishes a new carrying value. We assess other than temporary impairment of marketable securities in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 820, “Fair Value Measurements.” The framework under the provisions of ASC 820 establishes three levels of inputs that may be used to measure fair value. Each level of input has different levels of subjectivity and difficulty involved in determining fair value.

Foreign Exchange and Translation of Foreign Currencies

We have international subsidiary and branch operations. In addition, a portion of our silicon wafer and other purchases are denominated in Japanese yen, we bill certain Japanese customers in yen and collect a Japanese consumption tax refund in yen. Gains or losses from foreign exchange rate fluctuations on balances denominated in foreign currencies are reflected in Other income, net. Realized and unrealized gains or losses on foreign currency transactions were not significant for the periods presented. We translate accounts denominated in foreign currencies in accordance with ASC 830, “Foreign Currency Matters,” using the current rate method under which asset and liability accounts are translated at the current rate, while stockholders' equity accounts are translated at the appropriate historical rates, and revenue and expense accounts are translated at average monthly exchange rates. Translation adjustments related to the consolidation of foreign subsidiary financial statements are reflected in Accumulated other comprehensive loss in Stockholders' equity.

Derivative Financial Instruments

At September 27, 2014 and December 28, 2013, we had open foreign exchange contracts of 385,000,000 JPY and 240,000,000 JPY, respectively. One contract outstanding at September 27, 2014 settled in October, 2014; and four contracts will settle in June 2015. One contract outstanding at December 28, 2013 settled in January 2014 and a second contract settled in June 2014. Although such hedges mitigate our foreign currency exchange rate exposure from an economic perspective, they were not designated as "effective" hedges for accounting purposes and are adjusted to fair value through earnings, with an impact of less than $0.2 million for the periods reported. We do not hold or issue derivative financial instruments for trading or speculative purposes.

Concentration Risk

Potential exposure to concentration risk consists primarily of revenue, cash and cash equivalents, marketable securities, trade receivables and supply of wafers for our new products.

Our top five end customers constituted approximately 41% of our revenue for the third quarter of fiscal 2014, compared to approximately 48% for the third quarter of fiscal 2013. Our top five end customers constituted approximately 47% of our revenue for the first nine months of fiscal 2014, compared to approximately 45% for the first nine months of fiscal 2013.

Our two largest end customers accounted for approximately 18% and 10% of total revenue, respectively, in the third quarter of fiscal 2014 and 21% and 13% of total revenue, respectively, in the first nine months of fiscal 2014. No other customer accounted for more than 10%. Our two largest end customers accounted for approximately 27% and 9% of total revenue, respectively, in the third quarter of fiscal 2013 and 23% and 8% of total revenue, respectively, in the first nine months of fiscal 2013.

Concentration of credit risk with respect to trade receivables is mitigated by our credit and collection process including: active management of collections, credit limits, routine credit evaluations for essentially all customers and secure transactions with letters of credit or advance payments where appropriate. Accounts receivable do not bear interest, and are shown net of allowances for doubtful accounts of $0.9 million and $0.9 million at September 27, 2014 and December 28, 2013, respectively. We regularly review our allowance for doubtful accounts and the aging of our accounts receivable. Write-offs for uncollected trade receivables have not been significant to date.

We place our investments primarily through two financial institutions and mitigate the concentration of credit risk by limiting the maximum portion of the investment portfolio which may be invested in any one instrument. Our investment policy defines approved credit ratings for investment securities. Investments on-hand consisted primarily of money market instruments, “AA” or better corporate notes and bonds and commercial paper, and U.S. government agency obligations. See Note 5 for a discussion of the liquidity attributes of our marketable securities.

We rely on a limited number of foundries for our wafer purchases including: Fujitsu Limited, Seiko Epson Corporation, Taiwan Semiconductor Manufacturing Company, Ltd, United Microelectronics Corporation, and GLOBALFOUNDRIES.

Revenue Recognition and Deferred Income

We sell our products directly to end customers or through a network of independent manufacturers' representatives and indirectly through a network of independent sell-in and sell-through distributors. Distributors provide periodic data regarding the product, price, quantity, and end customer when products are resold, as well as the quantities of our products they still have in stock.

Revenue from sales to original equipment manufacturers ("OEMs") and sell-in distributors is generally recognized upon shipment. Revenue from sales by our sell-through distributors is recognized at the time of reported resale. Under both types of revenue recognition, persuasive evidence of an arrangement exists, the price is fixed or determinable, title has transferred, collection of resulting receivables is reasonably assured, and there are no remaining customer acceptance requirements and no remaining significant performance obligations.

Orders from our sell-through distributors are initially recorded at published list prices; however, for a majority of our sales, the final selling price is determined at the time of resale and in accordance with a distributor price agreement. In certain circumstances, we allow sell-through distributors to return unsold products. At times, we protect our sell-through distributors against reductions in published list prices. For these reasons, we do not recognize revenue until products are resold by sell-through distributors to an end customer.

For sell-through distributors, at the time of shipment to distributors, we (a) record Accounts receivable at published list price since there is a legally enforceable obligation from the distributor to pay us currently for product delivered, (b) relieve inventory for the carrying value of goods shipped since legal title has passed to the distributor, and (c) record deferred revenue and deferred cost of sales in Deferred income and allowances on sales to sell-through distributors in the liability section of our Consolidated Balance Sheets. The final price is set at the time of resale and is determined in accordance with a distributor price agreement. Revenue and cost of products sold to sell-through distributors are deferred until either the product is resold by the distributor or, in certain cases, return privileges terminate, at which time Revenue and Cost of products sold are reflected in Net income, and Accounts receivable are adjusted to reflect the final selling price.

The components of Deferred income and allowances on sales to sell-through distributors are presented in the following table (in thousands):



	September 27, 2014			December 28, 2013
Inventory valued at published list price and held by sell-through distributors with right of return	$	48,814		$	36,056
Allowance for distributor advances	(31,440		)	(24,090		)
Deferred cost of sales related to inventory held by sell-through distributors	(6,080		)	(4,471		)
Total Deferred income and allowances on sales to sell-through distributors	$	11,294		$	7,495

A significant portion of our year-to-date revenue in fiscal 2014 has been from sell-through distributors. Resale of products by sell-through distributors as a percentage of total revenue was 51% and 44% for the three and nine months ended September 27, 2014, respectively, and 41% and 44% for the three and nine months ended September 28, 2013, respectively.

We must use estimates and apply judgment to reconcile sell-through distributors' reported inventories to their activities. Errors in our estimates or judgments could result in inaccurate reporting of our Revenue, Cost of products sold, Deferred income and allowances on sales to sell-through distributors, and Net income.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts and classification of assets, such as marketable securities, accounts receivable, inventory, auction rate securities, goodwill (including the assessment of reporting unit), intangible assets, current and deferred income taxes, accrued liabilities (including restructuring charges and bonus arrangements), deferred income and allowances on sales to sell-through distributors, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the fiscal periods presented. Actual results could differ from those estimates.

New Accounting Pronouncements	9 Months Ended
New Accounting Pronouncements	Sep. 27, 2014
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements: On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance under U.S. GAAP when it becomes effective. The new standard will become effective for us on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. We are currently evaluating the impact of ASU 2014-09 on our consolidated financial statements and related disclosures and have not yet selected a transition method.

- Definition

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=28359718&loc=d3e22583-107794

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28359718&loc=d3e22580-107794

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=28359718&loc=d3e22499-107794

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 01
-Paragraph b
-Subparagraph 6
-Article 10

+ Details

Net Income Per Share

9 Months Ended

Sep. 27, 2014

Earnings Per Share [Abstract]

Net Income Per Share

Net Income Per Share:

We compute basic net income per share by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. To determine diluted share count, we apply the treasury stock method to determine the dilutive effect of outstanding stock option shares, restricted stock units ("RSUs"), Employee Stock Purchase Plan ("ESPP") shares and treasury stock. Our application of the treasury stock method includes, as assumed proceeds, the average unamortized stock-based compensation expense for the period and the impact of the pro forma deferred tax benefit or cost associated with stock-based compensation expense.

A reconciliation of basic and diluted Net income per share is presented below (in thousands, except per share data):



	Three Months Ended				Nine Months Ended
	September 27, 2014		September 28, 2013		September 27, 2014		September 28, 2013
Basic and diluted Net income	$	9,406	$	8,844	$	33,161	$	15,774
Shares used in basic Net income per share	118,643		116,055		117,661		115,730
Dilutive effect of stock options, RSUs and ESPP shares	2,327		1,294		2,788		1,363
Shares used in diluted Net income per share	120,970		117,349		120,449		117,093
Basic Net income per share	$	0.08	$	0.08	$	0.28	$	0.14
Diluted Net income per share	$	0.08	$	0.08	$	0.28	$	0.13

The computation of diluted Net income per share for the three months ended September 27, 2014 and September 28, 2013, respectively, includes the effects of stock options, RSUs, ESPP shares, and treasury stock, aggregating approximately 2.3 million and 1.3 million, respectively, which are dilutive, and excludes the effects of stock options, RSUs and ESPP shares aggregating approximately 2.7 million and 8.6 million, respectively, which are antidilutive. The computation of diluted Net income per share for the nine months ended September 27, 2014 and September 28, 2013, respectively, includes the effects of stock options, RSUs, ESPP shares, and treasury stock, aggregating approximately 2.8 million and 1.4 million, respectively, which are dilutive, and excludes the effects of stock options, RSUs and ESPP shares aggregating approximately 2.4 million and 8.5 million, respectively, which are antidilutive. Stock options, RSUs and ESPP shares are considered antidilutive when the aggregate of exercise price, unrecognized stock-based compensation expense and excess tax benefit are greater than the average market price for our common stock during the period or when the Company is in a net loss position, as the effects would reduce the loss per share. Stock options, RSUs and ESPP shares that are antidilutive at September 27, 2014 could become dilutive in the future.

Marketable Securities

9 Months Ended

Sep. 27, 2014

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Marketable Securities:

The following table summarizes the contractual maturities of our marketable securities (at fair value and in thousands):



	September 27, 2014		December 28, 2013
Short-term marketable securities:
Maturities of less than five years	$	134,131	$	101,505
Long-term marketable securities:
Maturities of more than ten years	—		5,241
Total marketable securities	$	134,131	$	106,746

The following table summarizes the composition of our marketable securities (at fair value and in thousands):



	September 27, 2014		December 28, 2013
Short-term marketable securities:
Corporate and government bonds and notes and commercial paper	$	134,131	$	101,505
Long-term marketable securities:
Federally-insured or FFELP guaranteed student loans	—		5,241
Total marketable securities	$	134,131	$	106,746

The following table summarizes the composition of our auction rate securities (in thousands):



	September 27, 2014					December 28, 2013
	Par Value		Fair Value		S&P Credit rating	Par Value		Fair Value		S&P Credit rating
Long-term marketable securities:
Federally-insured or FFELP guaranteed student loans	$	—	$	—		$	5,700	$	5,241	AA+
Total auction rate securities	$	—	$	—		$	5,700	$	5,241

On June 19, 2014, we sold our remaining auction rate securities, with a par value of $5.7 million and an estimated fair value of $5.2 million, for $5.5 million. As a result, we reported a gain of $1.7 million in the Consolidated Statement of Operations and relieved $1.1 million of previously unrealized gain, net of taxes, from Accumulated other comprehensive loss in the second quarter of fiscal 2014.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Fair Value of Financial Instruments

9 Months Ended

Sep. 27, 2014

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments (in thousands):



	Fair value measurements as of September 27, 2014								Fair value measurements as of December 28, 2013
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Short-term marketable securities	$	134,131	$	134,131	$	—	$	—	$	101,505	$	101,505	$	—	$	—
Long-term marketable securities	—		—		—		—		5,241		—		—		5,241
Foreign currency forward exchange contracts	150		—		150		—		48		—		48		—
Total fair value of financial instruments	$	134,281	$	134,131	$	150	$	—	$	106,794	$	101,505	$	48	$	5,241

We invest in various financial instruments including corporate and government bonds and notes, and commercial paper. In the past we have also invested in auction rate securities. In addition, we enter into foreign currency forward exchange contracts to mitigate our foreign currency exchange rate exposure. We carry these instruments at their fair value in accordance with ASC 820. The framework under the provisions of ASC 820 establishes three levels of inputs that may be used to measure fair value. Each level of input has different levels of subjectivity and difficulty involved in determining fair value.

Level 1 instruments generally represent quoted prices for identical assets or liabilities in active markets. Therefore, determining fair value for Level 1 instruments generally does not require significant management judgment, and the estimation is not difficult. Our Level 1 instruments consist of federal agency, corporate notes and bonds, and commercial paper that are traded in active markets and are classified as Short-term marketable securities on our Consolidated Balance Sheets.

Level 2 instruments include inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices for identical instruments in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 instruments include unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Our auction rate securities were classified as Level 3 instruments. Management used a combination of the market and income approach to derive the fair value of auction rate securities, which included third party valuation results, investment broker provided market information and available information on the credit quality of the underlying collateral. As a result, the determination of fair value for Level 3 instruments requires significant management judgment and subjectivity.

There were no transfers between any of the levels during the first nine months of fiscal 2014 or 2013. During the first nine months of fiscal 2014 we sold our Level 3 instruments, which consisted entirely of auction rate securities.

During the nine months ended September 27, 2014 and September 28, 2013, the following changes occurred in our Level 3 instruments (in thousands):



	Nine Months Ended
	September 27, 2014			September 28, 2013
Beginning fair value of Long-term marketable securities	$	5,241		$	4,717
Fair value of securities sold	(5,488		)	—
Realized gain from increase in fair value	247			—
Ending fair value of Long-term marketable securities	$	—		$	4,717

In accordance with ASC 320, “Investments-Debt and Equity Securities,” we recorded an unrealized loss of less than $0.2 million during each of the nine months ended September 27, 2014 and September 28, 2013 on certain Short-term marketable securities (Level 1 instruments), which has been recorded in Accumulated other comprehensive loss. Future fluctuations in fair value related to these instruments that the Company deems to be temporary, including any recoveries of previous write-downs, would be recorded to Accumulated other comprehensive loss. If we were to determine in the future that any further decline in fair value is other-than-temporary, we would record an impairment charge, which could have a materially detrimental impact on our operating results. If we were to liquidate our position in these securities, it is likely that the amount of any future realized gain or loss would be different from the unrealized gain or loss reported in Accumulated other comprehensive loss.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Inventories

9 Months Ended

Sep. 27, 2014

Inventory Disclosure [Abstract]

Inventories

Inventories (in thousands):



	September 27, 2014		December 28, 2013
Work in progress	$	48,377	$	32,111
Finished goods	16,697		14,111
Total inventories	$	65,074	$	46,222

Business Combinations and Goodwill	9 Months Ended
Business Combinations and Goodwill	Sep. 27, 2014
Business Combinations [Abstract]
Business Combinations and Goodwill	Business Combinations and Goodwill: In December 2011, we acquired SiliconBlue Technologies Ltd. ("SiliconBlue") for $63.2 million in cash. Of the total purchase price, $43.9 million was allocated to goodwill, $18.5 million was allocated to intangible assets, and the remaining to net tangible assets acquired. In July 2011, we acquired substantially all of the assets of Rise Technology Development Limited, for $1.0 million in cash. Of the purchase price, $0.9 million was allocated to goodwill and the remaining to net tangible assets acquired. No impairment charges relating to goodwill or intangible assets were recorded for the first nine months of 2014 or 2013.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ Details

Intangible Assets

9 Months Ended

Sep. 27, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets:

In connection with our acquisition of SiliconBlue in December 2011, we recorded identifiable intangible assets related to developed technology and customer relationships based on guidance for determining fair value under the provisions of ASC 820. The following table summarizes the details of our total purchased intangible assets (in thousands):



	Weighted Average Amortization Period (in years)	Gross		Accumulated Amortization			Intangible assets, net of amortization September 27, 2014
Developed technology	7	$	10,700	$	(4,267	)	$	6,433
Customer relationships	5.5	7,800		(3,959		)	3,841
Total	6.3	$	18,500	$	(8,226	)	$	10,274

Amortization expense associated with these intangible assets is reported as Amortization of intangible assets in the Consolidated Statements of Operations and amounted to $0.7 million in each of the third quarters of fiscal years 2014 and 2013 and $2.2 million in each of the first nine months of fiscal years 2014 and 2013. We expect amortization expense related to these intangible assets to approximate $2.9 million each year in fiscal years 2014 - 2016, $2.2 million in 2017, and $1.5 million in 2018.

Changes in Stockholders' Equity and Accumulated Other Comprehensive Loss

9 Months Ended

Sep. 27, 2014

Stockholders' Equity Note [Abstract]

Changes in Stockholders' Equity and Accumulated other Comprehensive Loss

Changes in Stockholders' Equity and Accumulated Other Comprehensive Loss (in thousands):



	Common stock		Paid-in capital		Treasury stock			Accumulated deficit			Accumulated other comprehensive loss			Total
Balances, December 28, 2013	$	1,157	$	626,861	$	—		$	(242,193	)	$	(145	)	$	385,680
Net income for the nine months ended September 27, 2014	—		—		—			33,161			—			33,161
Unrealized loss related to marketable securities, net	—		—		—			—			(280		)	(280		)
Realized gain on sale of auction rate securities, previously unrealized, net of tax	—		—		—			—			(1,147		)	(1,147		)
Recognized loss on redemption of marketable securities, previously unrealized	—		—		—			—			98			98
Translation adjustments	—		—		—			—			579			579
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax	32		8,463		—			—			—			8,495
Stock repurchase	—		—		(1,700		)	—			—			(1,700		)
Stock-based compensation expense related to stock options, ESPP and RSUs	—		9,543		—			—			—			9,543
Balances, September 27, 2014	$	1,189	$	644,867	$	(1,700	)	$	(209,032	)	$	(895	)	$	434,429

On February 27, 2013, our Board of Directors approved a stock repurchase program pursuant to which up to $20.0 million of outstanding common stock could be repurchased from time to time. The duration of the repurchase program was twelve months. During fiscal 2013, approximately 0.8 million shares were repurchased for $3.7 million. The 2013 program expired during the three months ended March 29, 2014. No shares were repurchased during those three months.

On March 3, 2014, our Board of Directors approved a stock repurchase program pursuant to which up to $20.0 million of outstanding common stock may be repurchased from time to time. The duration of the repurchase program is twelve months. During the three and nine months ended September 27, 2014, approximately 0.2 million shares were repurchased, in aggregate for $1.7 million under this program. We expect that all future repurchases will be open market transactions funded from available working capital.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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-Number 210
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-Article 4

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Income Taxes	9 Months Ended
Income Taxes	Sep. 27, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes: For the three months ended September 27, 2014 and September 28, 2013, we recorded an income tax provision of approximately $1.0 million and $0.4 million, respectively. For the nine months ended September 27, 2014 and September 28, 2013, we recorded an income tax provision of approximately $5.0 million and $3.0 million, respectively. The income tax provision for the three and nine months ended September 27, 2014 represents tax at the federal, state and foreign statutory tax rates adjusted for non-deductible stock compensation, withholding taxes, changes in uncertain tax positions as well as other non-deductible items in the United States and foreign jurisdictions. The difference between the U.S. federal statutory tax rate of 35% and our effective tax rate is primarily due to income earned in lower tax rate jurisdictions, for which no U.S. income tax has been provided, because we intend to permanently reinvest these earnings outside of the United States. We are subject to federal income tax as well as income tax of multiple state and foreign jurisdictions. We are no longer subject to federal, state and local, or foreign income tax examinations for years before 2011, 2010 and 2008, respectively. However, net operating loss ("NOL") and credit carryforwards from all years are subject to examination and adjustments for at least three years following the year in which we used the attributes. Our U.S. and French income tax returns are currently under examination for 2011 and 2012, as well as our Singapore income tax return for 2012. We are not under examination in any other jurisdictions. We believe that it is reasonably possible that $0.1 million of unrecognized tax benefits and less than $0.1 million of associated interest and penalties could be recognized during the next twelve months. The $0.1 million potential change would represent a decrease in unrecognized tax benefits, comprised of items related to filings for years that will no longer be subject to examination under expiring statutes of limitations. As a result of the ongoing examination of our 2011 and 2012 U.S. federal tax returns we have reduced our federal and state credit carryforwards. Correspondingly we have reduced our federal and state unrecognized tax benefits by $4.5 million and $0.2 million, respectively. Due to the valuation allowance against the federal and state credit deferred tax assets, both the reduction to the credit carryforwards and the related uncertain tax positions did not impact our provision for income taxes. We have U.S. federal NOL carryforwards that expire at various dates between 2023 and 2032. We have state net operating loss carryforwards that expire at various dates from 2014 through 2032. We also have federal and state credit carryforwards, some not expiring and others expiring at various dates from 2014 through 2033. We are not currently paying U.S. federal income taxes and do not expect to pay such taxes until we fully utilize our tax NOL and credit carryforwards. We expect to pay a nominal amount of state income tax. We are paying foreign income taxes, which are reflected in the Provision for income taxes in our Consolidated Statements of Operations and are primarily related to the cost of operating offshore subsidiaries. We accrue interest and penalties related to uncertain tax positions in the Provision for income taxes.

Restructuring

9 Months Ended

Sep. 27, 2014

Restructuring and Related Activities [Abstract]

Restructuring

Restructuring:

In October 2012, our Board of Directors adopted the "2012 restructuring plan." In connection with this restructuring plan, we reduced our headcount by approximately 110 employees and eliminated certain sites, including sites in Pennsylvania and Illinois. In connection with this action, we recorded restructuring charges of less than $0.1 million in the first quarter of fiscal 2013. The 2012 restructuring plan was substantially completed during the first quarter of fiscal 2013.

The following table displays the activity related to the 2012 restructuring plan (in thousands):



	Severance and related			Lease termination			Other			Total
Balance at December 29, 2012	$	2,373		$	793		$	258		$	3,424
Restructuring Charges	105			224			245			574
Cash Payments	(2,312		)	(571		)	(220		)	(3,103		)
Adjustments to prior restructuring costs	(150		)	(99		)	(68		)	(317		)
Balance at September 28, 2013	$	16		$	347		$	215		$	578

Balance at December 28, 2013	$	17		$	368		$	147		$	532
Restructuring Charges	—			1			9			10
Cash Payments	(8		)	(325		)	(18		)	(351		)
Adjustments to prior restructuring costs	(9		)	15			—			6
Balance at September 27, 2014	$	—		$	59		$	138		$	197

Stock-Based Compensation

9 Months Ended

Sep. 27, 2014

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

Stock-Based Compensation

Stock-Based Compensation:

Total stock-based compensation expense included in our Consolidated Statements of Operations was as follows (in thousands):



	Three Months Ended				Nine Months Ended
	September 27, 2014		September 28, 2013		September 27, 2014		September 28, 2013
Line item:
Cost of products sold	$	215	$	171	$	592	$	460
Research and development	1,356		1,058		3,744		2,871
Selling, general and administrative	1,562		1,333		5,207		3,654
Total stock-based compensation	$	3,133	$	2,562	$	9,543	$	6,985

During the nine months ended September 27, 2014, we granted 98,592 market-based, restricted stock units in two equal tranches, each of which vest upon achievement of certain market-based conditions. The fair values of the market-based restricted stock units were determined and fixed on the date of grant using a lattice-based option-pricing valuation model, which incorporates a Monte-Carlo simulation, and considered the likelihood that we would achieve the market-based conditions. During the first quarter of fiscal 2014, the first tranche of 49,296 restricted stock units vested and we incurred stock compensation expense related to performance based awards of $0.5 million. During the second quarter of fiscal 2014, the second tranche of 49,296 restricted stock units vested and we incurred stock compensation expense related to performance based awards of $0.2 million, amounting to a total stock compensation expense related to performance based awards of $0.7 million for the nine months ended September 27, 2014.

Legal Matters	9 Months Ended
Legal Matters	Sep. 27, 2014
Legal Matters Disclosure [Abstract]
Legal Matters	Legal Matters: On June 11, 2007, a patent infringement lawsuit was filed by Lizy K. John (“John”) against us in the U.S. District Court for the Eastern District of Texas, Marshall Division. In the complaint, John sought an injunction, unspecified damages, and attorneys’ fees and expenses. On August 19, 2014, the parties entered into a settlement agreement. Under that agreement, we received a non-exclusive, irrevocable, fully paid-up, worldwide license for use of the asserted patent. The license fully exhausts and includes all claims of the asserted patent and includes the right for our direct and indirect customers (including end users) and distributors to practice all claims of the asserted patent in connection with that customer’s purchase or use of our products. The settlement did not have a material adverse effect on our financial position. On August 27, 2014, the court dismissed the case with prejudice. We are exposed to certain other asserted and unasserted potential claims. There can be no assurance that, with respect to potential claims made against us, we could resolve such claims under terms and conditions that would not have a material adverse effect on our business, our liquidity or our financial results. Periodically, we review the status of each significant matter and assess its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and a range of possible losses can be estimated, we then accrue a liability for the estimated loss based on the provisions of FASB ASC 450, “Contingencies" (“ASC 450”). Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based only on the best information available at the time. As additional information becomes available, we reassess the potential liability related to pending claims and litigation and may revise estimates. Presently, no accrual has been estimated under ASC 450 for potential losses that may or may not arise from the current lawsuits in which we are involved.

Segment and Geographic Information

9 Months Ended

Sep. 27, 2014

Segment Reporting [Abstract]

Segment and Geographic Information

Segment and Geographic Information:

We operate in one industry segment comprising the design, development, manufacture and marketing of programmable logic products. Our revenue by major geographic area based on ship-to location was as follows (dollars in thousands):



	Three Months Ended								Nine Months Ended
	September 27, 2014				September 28, 2013				September 27, 2014				September 28, 2013
Asia	$	63,364	73	%	$	66,191	76	%	$	209,567	74	%	$	177,848	73	%
Europe	14,909		17		11,857		14		45,337		16		36,665		15
Americas	8,297		10		9,106		10		27,623		10		28,493		12
Total revenue	$	86,570	100	%	$	87,154	100	%	$	282,527	100	%	$	243,006	100	%

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 280
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 280
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
-Paragraph 42
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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+ Details

Basis of Presentation and Significant Accounting Policies (Policies)

9 Months Ended

Sep. 27, 2014

Accounting Policies [Abstract]

Fiscal Period

Principles of Consolidation

Cash Equivalents

Marketable Securities

We account for marketable securities as available for sale with unrealized gains or losses recorded to Accumulated other comprehensive loss, unless losses are considered other than temporary, in which case, losses are charged to the Consolidated Statements of Operations and Statements of Comprehensive Income.

Fair Value of Financial Instruments

Foreign Exchange and Translation of Foreign Currencies

Derivative Financial Instruments

Concentration Risk

Potential exposure to concentration risk consists primarily of revenue, cash and cash equivalents, marketable securities, trade receivables and supply of wafers for our new products.

Revenue Recognition and Deferred Income

The components of Deferred income and allowances on sales to sell-through distributors are presented in the following table (in thousands):



	September 27, 2014			December 28, 2013
Inventory valued at published list price and held by sell-through distributors with right of return	$	48,814		$	36,056
Allowance for distributor advances	(31,440		)	(24,090		)
Deferred cost of sales related to inventory held by sell-through distributors	(6,080		)	(4,471		)
Total Deferred income and allowances on sales to sell-through distributors	$	11,294		$	7,495

Use of Estimates

New Accounting Pronouncements

New Accounting Pronouncements:

On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance under U.S. GAAP when it becomes effective. The new standard will become effective for us on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. We are currently evaluating the impact of ASU 2014-09 on our consolidated financial statements and related disclosures and have not yet selected a transition method.

Basis of Presentation and Significant Accounting Policies (Tables)

9 Months Ended

Sep. 27, 2014

Accounting Policies [Abstract]

Deferred Income and Allowances on Sales to Sell-through Distributors

The components of Deferred income and allowances on sales to sell-through distributors are presented in the following table (in thousands):



	September 27, 2014			December 28, 2013
Inventory valued at published list price and held by sell-through distributors with right of return	$	48,814		$	36,056
Allowance for distributor advances	(31,440		)	(24,090		)
Deferred cost of sales related to inventory held by sell-through distributors	(6,080		)	(4,471		)
Total Deferred income and allowances on sales to sell-through distributors	$	11,294		$	7,495

Net Income Per Share (Tables)

9 Months Ended

Sep. 27, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Reconciliation

A reconciliation of basic and diluted Net income per share is presented below (in thousands, except per share data):



	Three Months Ended				Nine Months Ended
	September 27, 2014		September 28, 2013		September 27, 2014		September 28, 2013
Basic and diluted Net income	$	9,406	$	8,844	$	33,161	$	15,774
Shares used in basic Net income per share	118,643		116,055		117,661		115,730
Dilutive effect of stock options, RSUs and ESPP shares	2,327		1,294		2,788		1,363
Shares used in diluted Net income per share	120,970		117,349		120,449		117,093
Basic Net income per share	$	0.08	$	0.08	$	0.28	$	0.14
Diluted Net income per share	$	0.08	$	0.08	$	0.28	$	0.13

Marketable Securities (Tables)

9 Months Ended

Sep. 27, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Contractual Maturities of Marketable Securities

The following table summarizes the contractual maturities of our marketable securities (at fair value and in thousands):



	September 27, 2014		December 28, 2013
Short-term marketable securities:
Maturities of less than five years	$	134,131	$	101,505
Long-term marketable securities:
Maturities of more than ten years	—		5,241
Total marketable securities	$	134,131	$	106,746

Schedule of Composition of Marketable Securities

The following table summarizes the composition of our marketable securities (at fair value and in thousands):



	September 27, 2014		December 28, 2013
Short-term marketable securities:
Corporate and government bonds and notes and commercial paper	$	134,131	$	101,505
Long-term marketable securities:
Federally-insured or FFELP guaranteed student loans	—		5,241
Total marketable securities	$	134,131	$	106,746

Schedule of Composition of Auction Rate Securities

The following table summarizes the composition of our auction rate securities (in thousands):



	September 27, 2014					December 28, 2013
	Par Value		Fair Value		S&P Credit rating	Par Value		Fair Value		S&P Credit rating
Long-term marketable securities:
Federally-insured or FFELP guaranteed student loans	$	—	$	—		$	5,700	$	5,241	AA+
Total auction rate securities	$	—	$	—		$	5,700	$	5,241

Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 27, 2014

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Financial Instruments



	Fair value measurements as of September 27, 2014								Fair value measurements as of December 28, 2013
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Short-term marketable securities	$	134,131	$	134,131	$	—	$	—	$	101,505	$	101,505	$	—	$	—
Long-term marketable securities	—		—		—		—		5,241		—		—		5,241
Foreign currency forward exchange contracts	150		—		150		—		48		—		48		—
Total fair value of financial instruments	$	134,281	$	134,131	$	150	$	—	$	106,794	$	101,505	$	48	$	5,241

Schedule of Changes In Level 3 Instruments

During the nine months ended September 27, 2014 and September 28, 2013, the following changes occurred in our Level 3 instruments (in thousands):



	Nine Months Ended
	September 27, 2014			September 28, 2013
Beginning fair value of Long-term marketable securities	$	5,241		$	4,717
Fair value of securities sold	(5,488		)	—
Realized gain from increase in fair value	247			—
Ending fair value of Long-term marketable securities	$	—		$	4,717

Inventories (Tables)

9 Months Ended

Sep. 27, 2014

Inventory Disclosure [Abstract]

Schedule of Inventories



	September 27, 2014		December 28, 2013
Work in progress	$	48,377	$	32,111
Finished goods	16,697		14,111
Total inventories	$	65,074	$	46,222

Intangible Assets (Tables)

9 Months Ended

Sep. 27, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The following table summarizes the details of our total purchased intangible assets (in thousands):



	Weighted Average Amortization Period (in years)	Gross		Accumulated Amortization			Intangible assets, net of amortization September 27, 2014
Developed technology	7	$	10,700	$	(4,267	)	$	6,433
Customer relationships	5.5	7,800		(3,959		)	3,841
Total	6.3	$	18,500	$	(8,226	)	$	10,274

Changes in Stockholders' Equity and Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 27, 2014

Stockholders' Equity Note [Abstract]

Schedule of Changes in Stockholders' Equity and Accumulated other Comprehensive Loss

Changes in Stockholders' Equity and Accumulated Other Comprehensive Loss (in thousands):



	Common stock		Paid-in capital		Treasury stock			Accumulated deficit			Accumulated other comprehensive loss			Total
Balances, December 28, 2013	$	1,157	$	626,861	$	—		$	(242,193	)	$	(145	)	$	385,680
Net income for the nine months ended September 27, 2014	—		—		—			33,161			—			33,161
Unrealized loss related to marketable securities, net	—		—		—			—			(280		)	(280		)
Realized gain on sale of auction rate securities, previously unrealized, net of tax	—		—		—			—			(1,147		)	(1,147		)
Recognized loss on redemption of marketable securities, previously unrealized	—		—		—			—			98			98
Translation adjustments	—		—		—			—			579			579
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax	32		8,463		—			—			—			8,495
Stock repurchase	—		—		(1,700		)	—			—			(1,700		)
Stock-based compensation expense related to stock options, ESPP and RSUs	—		9,543		—			—			—			9,543
Balances, September 27, 2014	$	1,189	$	644,867	$	(1,700	)	$	(209,032	)	$	(895	)	$	434,429

Restructuring (Tables)

9 Months Ended

Sep. 27, 2014

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The following table displays the activity related to the 2012 restructuring plan (in thousands):



	Severance and related			Lease termination			Other			Total
Balance at December 29, 2012	$	2,373		$	793		$	258		$	3,424
Restructuring Charges	105			224			245			574
Cash Payments	(2,312		)	(571		)	(220		)	(3,103		)
Adjustments to prior restructuring costs	(150		)	(99		)	(68		)	(317		)
Balance at September 28, 2013	$	16		$	347		$	215		$	578

Balance at December 28, 2013	$	17		$	368		$	147		$	532
Restructuring Charges	—			1			9			10
Cash Payments	(8		)	(325		)	(18		)	(351		)
Adjustments to prior restructuring costs	(9		)	15			—			6
Balance at September 27, 2014	$	—		$	59		$	138		$	197

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 27, 2014

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

Schedule of Stock-Based Compensation Expense

Total stock-based compensation expense included in our Consolidated Statements of Operations was as follows (in thousands):



	Three Months Ended				Nine Months Ended
	September 27, 2014		September 28, 2013		September 27, 2014		September 28, 2013
Line item:
Cost of products sold	$	215	$	171	$	592	$	460
Research and development	1,356		1,058		3,744		2,871
Selling, general and administrative	1,562		1,333		5,207		3,654
Total stock-based compensation	$	3,133	$	2,562	$	9,543	$	6,985

Segment and Geographic Information (Tables)

9 Months Ended

Sep. 27, 2014

Segment Reporting [Abstract]

Schedule of Revenue by Major Geographic Area

Our revenue by major geographic area based on ship-to location was as follows (dollars in thousands):



	Three Months Ended								Nine Months Ended
	September 27, 2014				September 28, 2013				September 27, 2014				September 28, 2013
Asia	$	63,364	73	%	$	66,191	76	%	$	209,567	74	%	$	177,848	73	%
Europe	14,909		17		11,857		14		45,337		16		36,665		15
Americas	8,297		10		9,106		10		27,623		10		28,493		12
Total revenue	$	86,570	100	%	$	87,154	100	%	$	282,527	100	%	$	243,006	100	%

Basis of Presentation and Significant Accounting Policies (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2014 USD ($)	Sep. 28, 2013	Sep. 27, 2014 USD ($)	Sep. 28, 2013	Sep. 27, 2014 JPY (¥)	Sep. 27, 2014 USD ($)	Dec. 28, 2013 JPY (¥)	Dec. 28, 2013 USD ($)
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Gain on foreign exchange contracts adjusted to fair value through earnings - less than	$ 200		$ 200
Risks and Uncertainties [Abstract]
Allowance for doubtful accounts						$ 900		$ 900
Deferred Revenue and Credits [Abstract]
Inventory valued at published list price and held by sell-through distributors with right of return						48,814		36,056
Allowance for distributor advances						(31,440)		(24,090)
Deferred cost of sales related to inventory held by sell-through distributors						(6,080)		(4,471)
Total Deferred income and allowances on sales to sell-through distributors						$ 11,294		$ 7,495
Revenue \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk	41.00%	48.00%	47.00%	45.00%
Sales Revenue \| Sell-Through Distributors
Risks and Uncertainties [Abstract]
Concentration Risk	51.00%		44.00%
Not designated as effective hedges for accounting purposes \| Foreign exchange contracts
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Open foreign exchange contracts - notional amounts \| ¥					¥ 385,000,000		¥ 240,000,000
Minimum
Basis of Presentation and Significant Accounting Policies [Line Items]
Fiscal year duration (52 weeks or 53 weeks)			364 days
Maximum
Basis of Presentation and Significant Accounting Policies [Line Items]
Fiscal year duration (52 weeks or 53 weeks)			371 days
Term of maturities of investments considered cash and cash equivalents			3 months
Customer A \| Revenue \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk	18.00%	27.00%	21.00%	23.00%
Customer B \| Revenue \| Customer Concentration Risk
Risks and Uncertainties [Abstract]
Concentration Risk	10.00%	9.00%	13.00%	8.00%

Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Earnings Per Share [Abstract]
Basic and diluted Net income	$ 9,406	$ 8,844	$ 33,161	$ 15,774
Shares used in basic Net income per share (in shares)	118,643	116,055	117,661	115,730
Dilutive effect of stock options, RSUs and ESPP shares (in shares)	2,327	1,294	2,788	1,363
Shares used in diluted Net income per share (in shares)	120,970	117,349	120,449	117,093
Basic Net income per share (in dollars per share)	$ 0.08	$ 0.08	$ 0.28	$ 0.14
Diluted Net income per share (in dollars per share)	$ 0.08	$ 0.08	$ 0.28	$ 0.13
Stock options, RSU's and ESPP shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of EPS (in shares)	2,700	8,600	2,400	8,500

Marketable Securities Composition (Details) - USD ($) $ in Thousands	Sep. 27, 2014	Jun. 19, 2014	Dec. 28, 2013
Schedule of Available-for-sale Securities [Line Items]
Maturities of less than five years	$ 134,131		$ 101,505
Maturities of more than ten years	0		5,241
Total marketable securities	134,131		106,746
Federally-insured or FFELP guaranteed student loan auction rate securities
Schedule of Available-for-sale Securities [Line Items]
Total marketable securities	0	$ 5,200	5,241
Short-term marketable securities \| Corporate and government bonds and notes and commercial paper
Schedule of Available-for-sale Securities [Line Items]
Total marketable securities	134,131		101,505
Long-term marketable securities \| Federally-insured or FFELP guaranteed student loan auction rate securities
Schedule of Available-for-sale Securities [Line Items]
Total marketable securities	$ 0		$ 5,241

Marketable Securities Auction Rate (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Jun. 19, 2014	Sep. 27, 2014	Sep. 27, 2014	Sep. 28, 2013	Dec. 28, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities		$ 134,131	$ 134,131		$ 106,746
Proceeds from sales of auction rate securities			5,488	$ 0
Total Auction Rate Securities
Schedule of Available-for-sale Securities [Line Items]
Par value		0	0		5,700
Available-for-sale securities		0	0		5,241
Federally-insured or FFELP guaranteed student loan auction rate securities
Schedule of Available-for-sale Securities [Line Items]
Par value	$ 5,700	0	0		5,700
Available-for-sale securities	5,200	0	$ 0		$ 5,241
Proceeds from sales of auction rate securities	$ 5,500
Available-for-sale securities, gross realized gain		1,700
Realized gain on sale of auction rate securities, previously unrealized, net of tax		$ 1,100

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 27, 2014	Dec. 28, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of marketable securities	$ 134,131	$ 106,746
Total
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Foreign currency forward exchange contracts	150	48
Total fair value of financial instruments	134,281	106,794
Short-term marketable securities \| Total
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of marketable securities	134,131	101,505
Long-term marketable securities \| Total
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of marketable securities	0	5,241
Level 1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total fair value of financial instruments	134,131	101,505
Level 1 \| Short-term marketable securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of marketable securities	134,131	101,505
Level 2
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Foreign currency forward exchange contracts	150	48
Total fair value of financial instruments	150	48
Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total fair value of financial instruments	0	5,241
Level 3 \| Long-term marketable securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of marketable securities	$ 0	$ 5,241

Fair Value of Financial Instruments Unobservable Inputs (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
Short-term marketable securities \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain - less than	$ 200	$ 200
Fair Value, Inputs, Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning fair value of Long-term marketable securities	5,241	4,717
Fair value of securities sold	(5,488)	0
Realized gain from increase in fair value	247	0
Ending fair value of Long-term marketable securities	$ 0	$ 4,717

Inventories (Details) - USD ($) $ in Thousands	Sep. 27, 2014	Dec. 28, 2013
Inventory Disclosure [Abstract]
Work in progress	$ 48,377	$ 32,111
Finished goods	16,697	14,111
Total inventories	$ 65,074	$ 46,222

Business Combinations and Goodwill (Details) - USD ($)	1 Months Ended		9 Months Ended
Business Combinations and Goodwill (Details) - USD ($)	Dec. 31, 2011	Jul. 31, 2011	Sep. 27, 2014	Sep. 28, 2013	Dec. 28, 2013
Business Acquisition [Line Items]
Goodwill			$ 44,808,000		$ 44,808,000
Impairment charges related to goodwill and intangible assets			$ 0	$ 0
SiliconBlue Technologies Ltd.
Business Acquisition [Line Items]
Cash purchase price	$ 63,200,000
Goodwill	43,900,000
Acquired intangible assets	$ 18,500,000
Rise Technology Development Limited
Business Acquisition [Line Items]
Cash purchase price		$ 1,000,000
Goodwill		$ 900,000

Intangible Assets (Details) - SiliconBlue Technologies Ltd. - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)			6 years 3 months 18 days
Gross	$ 18,500		$ 18,500
Accumulated Amortization	(8,226)		(8,226)
Intangible assets, net of amortization	10,274		10,274
Amortization of acquired intangible assets	700	$ 700	2,200	$ 1,500
Expected acquired intangible assets amortization expense, 2014	2,900		2,900
Expected acquired intangible assets amortization expense, 2015	2,900		2,900
Expected acquired intangible assets amortization expense, 2016	2,900		2,900
Expected acquired intangible assets amortization expense, 2017	2,200		2,200
Expected acquired intangible assets amortization expense, 2018	1,500		$ 1,500
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)			7 years
Gross	10,700		$ 10,700
Accumulated Amortization	(4,267)		(4,267)
Intangible assets, net of amortization	6,433		$ 6,433
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)			5 years 6 months
Gross	7,800		$ 7,800
Accumulated Amortization	(3,959)		(3,959)
Intangible assets, net of amortization	$ 3,841		$ 3,841

Changes in Stockholders' Equity and Accumulated Other Comprehensive Loss (Details) - USD ($) shares in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013	Dec. 28, 2013	Mar. 03, 2014	Feb. 27, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 385,680,000
Net Income	$ 9,406,000	$ 8,844,000	33,161,000	$ 15,774,000
Unrealized (loss) gain related to marketable securities, net	(210,000)	221,000	(280,000)	(11,000)
Realized gain on sale of auction rate securities, previously unrealized, net of tax	0	0	(1,147,000)	0
Recognized loss on redemption of marketable securities, previously unrealized	(1,000)	1,000	98,000	303,000
Translation adjustments	(159,000)	$ 225,000	579,000	$ (205,000)
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax			8,495,000
Stock repurchase			1,700,000
Stock-based compensation expense related to stock options, ESPP and RSUs			9,543,000
Ending balance	434,429,000		$ 434,429,000		$ 385,680,000
Shares repurchased (in shares)			0.2
Share Repurchase Program approved on Feb 27, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchase program, authorized amount							$ 20,000,000.0
Shares repurchased (in shares)					0.8
Shares repurchased	1,700,000				$ 3,700,000
Share Repurchase Program approved on Feb 27, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchase program, authorized amount						$ 20,000,000.0
Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 1,157,000
Net Income
Unrealized (loss) gain related to marketable securities, net
Realized gain on sale of auction rate securities, previously unrealized, net of tax
Recognized loss on redemption of marketable securities, previously unrealized
Translation adjustments
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax			32,000
Stock repurchase
Stock-based compensation expense related to stock options, ESPP and RSUs
Ending balance	1,189,000		1,189,000		1,157,000
Paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			626,861,000
Net Income			0
Unrealized (loss) gain related to marketable securities, net			0
Realized gain on sale of auction rate securities, previously unrealized, net of tax			0
Recognized loss on redemption of marketable securities, previously unrealized			0
Translation adjustments			0
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax			8,463,000
Stock repurchase			0
Stock-based compensation expense related to stock options, ESPP and RSUs			9,543,000
Ending balance	644,867,000		644,867,000		626,861,000
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			0
Unrealized (loss) gain related to marketable securities, net			0
Realized gain on sale of auction rate securities, previously unrealized, net of tax			0
Recognized loss on redemption of marketable securities, previously unrealized			0
Stock repurchase			1,700,000
Ending balance	(1,700,000)		(1,700,000)		0
Accumulated deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(242,193,000)
Net Income			33,161,000
Unrealized (loss) gain related to marketable securities, net
Realized gain on sale of auction rate securities, previously unrealized, net of tax
Recognized loss on redemption of marketable securities, previously unrealized
Translation adjustments
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax
Stock repurchase
Stock-based compensation expense related to stock options, ESPP and RSUs
Ending balance	(209,032,000)		(209,032,000)		(242,193,000)
Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(145,000)
Net Income
Unrealized (loss) gain related to marketable securities, net			(280,000)
Realized gain on sale of auction rate securities, previously unrealized, net of tax			(1,147,000)
Recognized loss on redemption of marketable securities, previously unrealized			98,000
Translation adjustments			579,000
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax
Stock repurchase
Stock-based compensation expense related to stock options, ESPP and RSUs
Ending balance	$ (895,000)		$ (895,000)		$ (145,000)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Provision for income taxes	$ 1,021	$ 417	$ 4,984	$ 3,037
Lapse of the statute of limitations on foreign tax filings
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits that could significantly change during the next twelve months	100		100
Total potential decrease in UTB	100		100
Maximum \| Lapse of the statute of limitations on foreign tax filings
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits, associated interest and penalties that could significantly change within the next twelve months	100		$ 100
U.S. Federal
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Statutory income tax rate			35.00%
Unrecognized tax benefits, Period decrease	4,500
State and Local Jurisdiction
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits, Period decrease	$ 200

Restructuring (Details) $ in Thousands	3 Months Ended		9 Months Ended
Restructuring (Details) $ in Thousands	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Oct. 31, 2012 employee
Restructuring Cost and Reserve [Line Items]
Recorded restructuring charges - less than	$ 2	$ 85	$ 16	$ 257
Restructuring Reserve [Roll Forward]
Balance at beginning of the period			532	3,424
Restructuring Charges			10	574
Cash Payments			(351)	(3,103)
Adjustments to prior restructuring costs			6	(317)
Balance at the end of the period	197	578	197	578
Severance and related
Restructuring Reserve [Roll Forward]
Balance at beginning of the period			17	2,373
Restructuring Charges			0	105
Cash Payments			(8)	(2,312)
Adjustments to prior restructuring costs			(9)	(150)
Balance at the end of the period	0	16	0	16
Lease termination
Restructuring Reserve [Roll Forward]
Balance at beginning of the period			368	793
Restructuring Charges			1	224
Cash Payments			(325)	(571)
Adjustments to prior restructuring costs			15	(99)
Balance at the end of the period	59	347	59	347
Other
Restructuring Reserve [Roll Forward]
Balance at beginning of the period			147	258
Restructuring Charges			9	245
Cash Payments			(18)	(220)
Adjustments to prior restructuring costs			0	(68)
Balance at the end of the period	$ 138	215	$ 138	$ 215
2012 restructuring plan
Restructuring Cost and Reserve [Line Items]
Approximate reduction in headcount \| employee					110
Recorded restructuring charges - less than		$ 100

Stock-Based Compensation (Details) $ in Thousands	3 Months Ended				9 Months Ended
Stock-Based Compensation (Details) $ in Thousands	Sep. 27, 2014 USD ($)	Jun. 28, 2014 USD ($) shares	Mar. 29, 2014 USD ($) shares	Sep. 28, 2013 USD ($)	Sep. 27, 2014 USD ($) tranch shares	Sep. 28, 2013 USD ($)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 3,133			$ 2,562	$ 9,543	$ 6,985
Cost of products sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	215			171	592	460
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	1,356			1,058	3,744	2,871
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 1,562			$ 1,333	$ 5,207	$ 3,654
Restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
RSU's granted during the period \| shares		49,296			98,592
Number of tranches for the options \| tranch					2
RSU's vested during the period \| shares			49,296
Q1 2014 Grant \| Restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation			$ 500
Q2 2014 Grant \| Restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation		$ 200			$ 700

Segment and Geographic Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
Segment and Geographic Information (Details) $ in Thousands	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Sep. 27, 2014 USD ($) segment	Sep. 28, 2013 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments \| segment			1
Total revenue	$ 86,570	$ 87,154	$ 282,527	$ 243,006
Total revenue as percentage	100.00%	100.00%	100.00%	100.00%
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 63,364	$ 66,191	$ 209,567	$ 177,848
Total revenue as percentage	73.00%	76.00%	74.00%	73.00%
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 14,909	$ 11,857	$ 45,337	$ 36,665
Total revenue as percentage	17.00%	14.00%	16.00%	15.00%
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 8,297	$ 9,106	$ 27,623	$ 28,493
Total revenue as percentage	10.00%	10.00%	10.00%	12.00%