View Filing Data

Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 29, 2019	Jul. 30, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	LATTICE SEMICONDUCTOR CORP
Entity Central Index Key	0000855658
Document Type	10-Q
Document Period End Date	Jun. 29, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-28
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		132,668,729

CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Revenue:
Revenue	$ 102,296	$ 102,715	$ 200,387	$ 201,338
Cost of revenue:
Cost of revenue	42,258	52,467	82,697	94,569
Gross margin	60,038	50,248	117,690	106,769
Operating expenses:
Research and development	19,377	21,081	39,042	44,022
Selling, general, and administrative	19,759	21,068	40,540	48,111
Amortization of acquired intangible assets	3,390	4,523	6,779	10,159
Restructuring charges	3,126	4,376	4,467	5,405
Acquisition related charges	0	864	0	1,531
Impairment of acquired intangible assets	0	11,900	0	11,900
Total operating expenses	45,652	63,812	90,828	121,128
Income (loss) from operations	14,386	(13,564)	26,862	(14,359)
Interest expense	(3,538)	(4,968)	(8,525)	(10,082)
Other (expense) income, net	(2,109)	(348)	(1,956)	206
Income (loss) before income taxes	8,739	(18,880)	16,381	(24,235)
Income tax expense	180	1,343	414	1,940
Net income (loss)	$ 8,559	$ (20,223)	$ 15,967	$ (26,175)
Net income (loss) per share:
Basic (in usd per share)	$ 0.06	$ (0.16)	$ 0.12	$ (0.21)
Diluted (in usd per share)	$ 0.06	$ (0.16)	$ 0.12	$ (0.21)
Shares used in per share calculations:
Basic (in shares)	132,206	124,843	131,599	124,460
Diluted (in shares)	137,221	124,843	136,133	124,460
Product
Revenue:
Revenue	$ 98,096	$ 98,294	$ 189,708	$ 193,403
Cost of revenue:
Cost of revenue	42,258	52,208	82,697	94,310
Licensing and services
Revenue:
Revenue	4,200	4,421	10,679	7,935
Cost of revenue:
Cost of revenue	$ 0	$ 259	$ 0	$ 259

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 8,559	$ (20,223)	$ 15,967	$ (26,175)
Other comprehensive income (loss):
Unrealized gain related to marketable securities, net of tax	0	9	42	2
Reclassification adjustment for gains related to marketable securities included in Other (expense) income, net of tax	0	0	(53)	(1)
Translation adjustment, net of tax	39	(1,129)	86	(540)
Comprehensive income (loss)	$ 8,598	$ (21,343)	$ 16,042	$ (26,714)

- 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 (unaudited) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Current assets:
Cash and cash equivalents	$ 122,636	$ 119,051
Short-term marketable securities	0	9,624
Accounts receivable, net of allowance for doubtful accounts	37,893	60,890
Inventories	64,964	67,096
Prepaid expenses and other current assets	30,752	27,762
Total current assets	256,245	284,423
Property and equipment, less accumulated depreciation of $136,863 at June 29, 2019 and $141,367 at December 29, 2018	39,593	34,883
Operating lease right-of-use assets	26,092	0
Intangible assets, net	13,784	21,325
Goodwill	267,514	267,514
Deferred income taxes	227	215
Other long-term assets	13,204	15,327
Total assets	616,659	623,687
Current liabilities:
Accounts payable and accrued expenses (includes restructuring)	52,067	51,763
Accrued payroll obligations	9,056	9,365
Current portion of long-term debt	17,190	8,290
Current portion of operating lease liabilities	4,804
Total current liabilities	83,117	69,418
Long-term debt, net of current portion	172,287	251,357
Long-term operating lease liabilities, net of current portion	23,792
Other long-term liabilities	42,286	44,455
Total liabilities	321,482	365,230
Contingencies (Note 11)
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; 132,536,000 shares issued and outstanding as of June 29, 2019 and 129,728,000 shares issued and outstanding as of December 29, 2018	1,325	1,297
Additional paid-in capital	756,924	736,274
Accumulated deficit	(460,816)	(476,783)
Accumulated other comprehensive loss	(2,256)	(2,331)
Total stockholders' equity	295,177	258,457
Total liabilities and stockholders' equity	$ 616,659	$ 623,687

CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Statement of Financial Position [Abstract]
Accumulated depreciation	$ 136,863	$ 141,367
Preferred stock, par value per share (in dollars per share)	$ 0.01000	$ 0.01000
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)	$ 0.01000	$ 0.01000
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	132,536,000	129,728,000
Common stock, shares outstanding	132,536,000	129,728,000

CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ 15,967	$ (26,175)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	16,450	22,425
Impairment of acquired intangible assets	0	11,900
Amortization of operating lease right-of-use assets	2,907	0
Loss on re-financing of long-term debt	2,235	0
Amortization of debt issuance costs and discount	1,215	1,058
Stock-based compensation expense	7,655	7,200
Impairment of operating lease right-of-use asset (recorded in Restructuring charges)	977	0
Other non-cash adjustments	(39)	(130)
Changes in assets and liabilities:
Accounts receivable, net	22,997	(19,654)
Inventories	2,132	14,687
Prepaid expenses and other assets	(5,097)	(7,891)
Accounts payable and accrued expenses (includes restructuring)	3,974	7,095
Accrued payroll obligations	(309)	(1,716)
Operating lease liabilities, current and long-term portions	(3,975)	0
Income taxes payable	(593)	851
Deferred licensing and services revenue	0	(68)
Net cash provided by operating activities	66,496	9,582
Cash flows from investing activities:
Proceeds from sales of and maturities of short-term marketable securities	9,655	2,500
Purchases of marketable securities	0	(9,603)
Capital expenditures	(8,459)	(4,105)
Cash paid for software licenses	(3,597)	(3,981)
Net cash used in investing activities	(2,401)	(15,189)
Cash flows from financing activities:
Restricted stock unit tax withholdings	(1,014)	(1,369)
Proceeds from issuance of common stock	14,037	6,409
Proceeds from issuance of long-term debt	206,500	0
Original issue discount and debt issuance costs	(2,086)	0
Repayment of debt	(278,033)	(12,009)
Net cash used in financing activities	(60,596)	(6,969)
Effect of exchange rate change on cash	86	(540)
Net increase (decrease) in cash and cash equivalents	3,585	(13,116)
Beginning cash and cash equivalents	119,051	106,815
Ending cash and cash equivalents	122,636	93,699
Supplemental cash flow information:
Interest paid	8,103	9,177
Operating lease payments	4,613	0
Income taxes paid, net of refunds	1,500	2,057
Accrued purchases of plant and equipment	1,627	354
Operating lease right-of-use assets obtained in exchange for lease obligations	298	0
Change in unrealized gain related to marketable securities, net of tax, included in Accumulated other comprehensive loss	$ 42	$ 2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) - USD ($)
shares in Thousands, $ in Thousands

Total

Common stock

Additional Paid-in capital

Accumulated deficit

Accumulated other comprehensive loss

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accounting method transition adjustment

$ 27,401

^[1]

$ 27,401

Beginning balances (in shares) at Dec. 30, 2017

123,895

Beginning balances at Dec. 30, 2017

217,693

$ 1,239

$ 695,768

(477,862)

$ (1,452)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net income

(26,175)

Unrealized gain related to marketable securities, net of tax

Recognized gain on redemption of marketable securities, previously unrealized

(1)

Translation adjustments, net of tax

(540)

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs (in shares)

1,718

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax

5,040

$ 17

5,023

Stock-based compensation related to stock options, ESPP and RSUs

7,200

Ending balances (in shares) at Jun. 30, 2018

125,613

Ending balances at Jun. 30, 2018

230,620

$ 1,256

707,991

(476,636)

(1,991)

Beginning balances (in shares) at Mar. 31, 2018

124,311

Beginning balances at Mar. 31, 2018

245,672

$ 1,243

701,713

(456,413)

(871)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net income

(20,223)

Unrealized gain related to marketable securities, net of tax

Translation adjustments, net of tax

(1,129)

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs (in shares)

1,302

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax

3,891

$ 13

3,878

Stock-based compensation related to stock options, ESPP and RSUs

2,400

Ending balances (in shares) at Jun. 30, 2018

125,613

Ending balances at Jun. 30, 2018

$ 230,620

$ 1,256

707,991

(476,636)

(1,991)

Beginning balances (in shares) at Dec. 29, 2018

129,728

Beginning balances at Dec. 29, 2018

$ 258,457

$ 1,297

736,274

(476,783)

(2,331)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net income

15,967

Unrealized gain related to marketable securities, net of tax

Recognized gain on redemption of marketable securities, previously unrealized

(53)

Translation adjustments, net of tax

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs (in shares)

2,808

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax

13,023

$ 28

12,995

Stock-based compensation related to stock options, ESPP and RSUs

$ 7,655

7,655

Ending balances (in shares) at Jun. 29, 2019

132,536

Ending balances at Jun. 29, 2019

$ 295,177

$ 1,325

756,924

(460,816)

(2,256)

Beginning balances (in shares) at Mar. 30, 2019

131,905

Beginning balances at Mar. 30, 2019

281,155

$ 1,319

751,506

(469,375)

(2,295)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net income

8,559

Translation adjustments, net of tax

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs (in shares)

631

Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax

1,455

$ 6

1,449

Stock-based compensation related to stock options, ESPP and RSUs

$ 3,969

3,969

Ending balances (in shares) at Jun. 29, 2019

132,536

Ending balances at Jun. 29, 2019

$ 295,177

$ 1,325

$ 756,924

$ (460,816)

$ (2,256)

[1]	As of the beginning of fiscal 2018, we adopted ASC 606, "Revenue from Contracts With Customers," using the modified retrospective transition method. As a result of this adoption, we recorded a cumulative-effect adjustment to Accumulated Deficit, as shown in the table above.

Basis of Presentation, and Updates to Accounting Policies	6 Months Ended
	Jun. 29, 2019
Accounting Policies [Abstract]
Basis of Presentation and Updates to Accounting Policies	Basis of Presentation, and Updates to Accounting Policies Lattice Semiconductor Corporation, a Delaware corporation, and its subsidiaries (“Lattice,” the “Company,” “we,” “us,” or “our”) develop semiconductor technologies that we monetize through products, solutions, services, and licenses. Lattice was founded in 1983 and is headquartered in Hillsboro, Oregon. Basis of Presentation and Use of Estimates The accompanying Consolidated Financial Statements are unaudited and have been prepared by us in accordance with U.S. Generally Accepted Accounting Principles ("U.S. GAAP") and pursuant to the rules and regulations of the SEC. In our opinion, they include all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of results for the interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by the SEC's rules and regulations for interim reporting. 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 year ended December 29, 2018 ("2018 10-K"). The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments affecting the amounts reported in our consolidated condensed financial statements and the accompanying notes. The actual results that we experience may differ materially from our estimates. We describe our accounting methods and practices in more detail in our 2018 10-K. Except for the impact of the adoption of Topic 842, there have been no other changes to the significant accounting policies, procedures, or general information described in our 2018 10-K that have had a material impact on our consolidated financial statements and related notes. Updates to Accounting Policies On December 30, 2018, the first day of our 2019 fiscal year, we adopted Accounting Standards Update (“ASU”) No. 2016-02, Leases (Topic 842). See "Note 7 - Leases" for further information on our leases and our application of Topic 842. Fiscal Reporting Period We report based on a 52 or 53 week fiscal year ending on the Saturday closest to December 31. Our second quarter of fiscal 2019 and second quarter of fiscal 2018 ended on June 29, 2019 and June 30, 2018, respectively. All references to quarterly or six months ended financial results are references to the results for the relevant 13-week or 26-week fiscal period. Concentrations of Risk Distributors have historically accounted for a significant portion of our total revenue. Revenue attributable to distributors as a percentage of total revenue was 85% and 86% for the three months ended June 29, 2019 and June 30, 2018, respectively, and 82% and 87% for the six months ended June 29, 2019 and June 30, 2018, respectively. In the periods covered by this report, no end customer accounted for more than 10% of total revenue. Distributors also account for a substantial portion of our net accounts receivable. At June 29, 2019 and December 29, 2018, our largest distributor accounted for 36% and 41%, respectively, and our second largest accounted for 35% and 23%, respectively, of net accounts receivable. A third distributor accounted for 11% of net accounts receivable at June 29, 2019, but accounted for less than 10% of net accounts receivable at December 29, 2018. No other distributor or end customer accounted for more than 10% of net accounts receivable at these dates. Recently Issued Accounting Standards In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), which clarifies the accounting for implementation costs in cloud computing arrangements. This guidance is effective for interim and annual reporting periods beginning after December 15, 2019, and early adoption is permitted. We are currently assessing the impact of ASU 2018-15 on our consolidated financial statements and related disclosures.

Net Income (Loss) per Share

6 Months Ended

Jun. 29, 2019

Earnings Per Share [Abstract]

Net Income (Loss) per Share

Our calculation of the diluted share count includes the number of shares from our equity awards with market conditions or performance conditions that would be issuable under the terms of such awards at the end of the reporting period. The maximum number of shares issuable under the equity awards with a market condition are included in the diluted share count as of June 29, 2019, as the market condition would have been achieved at the highest level of vesting if measured as of the end of the reporting period. No shares related to the performance conditions are included in the diluted share count as of June 29, 2019, as vesting of these awards is contingent upon evaluation of the performance condition over two consecutive trailing four-quarter periods, which have not yet elapsed. See "Note 9 - Stock-Based Compensation" to our consolidated financial statements for further discussion of our equity awards with market conditions or performance conditions.

A summary of basic and diluted Net income (loss) per share is presented in the following table:



	Three Months Ended					Six Months Ended
(in thousands, except per share data)	June 29, 2019		June 30, 2018			June 29, 2019		June 30, 2018
Net income (loss)	$	8,559	$	(20,223	)	$	15,967	$	(26,175	)

Shares used in basic Net income (loss) per share	132,206		124,843			131,599		124,460
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition	5,015		—			4,534		—
Shares used in diluted Net income (loss) per share	137,221		124,843			136,133		124,460

Basic Net income (loss) per share	$	0.06	$	(0.16	)	$	0.12	$	(0.21	)
Diluted Net income (loss) per share	$	0.06	$	(0.16	)	$	0.12	$	(0.21	)

The computation of diluted Net income (loss) per share excludes the effects of stock options, Restricted Stock Units ("RSUs"), Employee Stock Purchase Plan ("ESPP") shares, and equity awards with a market condition or performance condition that are antidilutive, aggregating approximately the following number of shares:



	Three Months Ended		Six Months Ended
(in thousands)	June 29, 2019	June 30, 2018	June 29, 2019	June 30, 2018
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive	73	9,169	210	9,376

Stock options, RSUs, and ESPP shares that are antidilutive at June 29, 2019 could become dilutive in the future.

Revenue from Contracts with Customers

6 Months Ended

Jun. 29, 2019

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

Disaggregation of revenue

The following tables provide information about revenue from contracts with customers disaggregated by major class of revenue and by geographical market, based on ship-to location of the end customer, where available, and ship-to location of distributor otherwise:



Major Class of Revenue	Three Months Ended		Six Months Ended
(In thousands)	June 29, 2019	June 30, 2018	June 29, 2019	June 30, 2018
Product revenue - Distributors	86,627	88,790	164,099	174,747
Product revenue - Direct	11,469	9,504	25,609	18,656
Licensing and services revenue	4,200	4,421	10,679	7,935
Total revenue	102,296	102,715	200,387	201,338

Revenue by Geographical Market	Three Months Ended		Six Months Ended
(In thousands)	June 29, 2019	June 30, 2018	June 29, 2019	June 30, 2018
Asia	76,845	77,899	145,856	149,820
Europe	12,585	12,162	24,795	24,304
Americas	12,866	12,654	29,736	27,214
Total revenue	102,296	102,715	200,387	201,338

Contract balances

Our contract assets are included in Prepaid expenses and other current assets on our Consolidated Balance Sheets, and the following table summarizes their activity during the first six months of fiscal 2019:



(In thousands)
Contract assets as of December 29, 2018	$	9,143
Revenues recorded during the period	5,171
Transferred to Accounts receivable or collected	(1,885		)
Contract assets as of June 29, 2019	$	12,429

Contract liabilities are included in Account payable and accrued expenses on our Consolidated Balance Sheets, and the following table summarizes their activity during the first six months of fiscal 2019:



(In thousands)
Contract liabilities as of December 29, 2018	$	1,614
Accruals for estimated future stock rotation and scrap returns	3,347
Less: Release of accruals for recognized stock rotation and scrap returns	(2,461		)
Prepayment for products to be manufactured and delivered to the customer within six months	751
Contract liabilities as of June 29, 2019	$	3,251

The impact to revenue from the release of accruals for recognized stock rotation and scrap returns was offset by the processing of return merchandise authorizations ("RMAs") totaling $2.8 million, yielding a net revenue reduction of $0.3 million for the first six months of 2019. We will recognize the revenue related to the prepayment contract liability when control of the product is transferred to the end customer and the performance obligation has been satisfied.

Other matters

We share HDMI royalties with the other HDMI Founders based on an allocation formula, which is reviewed periodically, generally every three years. However, a new agreement covering the period beginning January 1, 2018 is yet to be signed. HDMI royalties are considered variable consideration under the current revenue standard and recognized as royalty revenue as usage occurs. While a new royalty sharing agreement is being negotiated with the other Founders of the HDMI consortium for fiscal years 2019 and 2018, we are estimating our share of royalty revenues under an anticipated new agreement. The amount of estimated revenue related to HDMI that we have recognized to date is reflected above in the balance of our contract assets.

Balance Sheet Components

6 Months Ended

Jun. 29, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Balance Sheet Components

Short-Term Marketable Securities

Our Short-term marketable securities consisted of U.S. government agency obligations with maturities up to two years, which we carried at their fair value as Level 1 instruments in accordance with ASC 820, "Fair Value Measurements." We liquidated these investments in the first quarter of fiscal 2019. The following table summarizes the maturities of our formerly-held Short-term marketable securities at fair value.



(In thousands)	June 29, 2019		December 29, 2018
Short-term marketable securities:
Maturing within one year	$	—	$	7,454
Maturing between one and two years	—		2,170
Total marketable securities	$	—	$	9,624

Accounts Receivable



(In thousands)	June 29, 2019			December 29, 2018
Accounts receivable	$	38,077		$	61,087
Less: Allowance for doubtful accounts	(184		)	(197		)
Accounts receivable, net of allowance for doubtful accounts	$	37,893		$	60,890

Inventories



(In thousands)	June 29, 2019		December 29, 2018
Work in progress	$	46,117	$	47,224
Finished goods	18,847		19,872
Total inventories	$	64,964	$	67,096

Property and Equipment – Geographic Information

Our Property and equipment, net by country at the end of each period was as follows:



(In thousands)	June 29, 2019		December 29, 2018
United States	$	33,370	$	27,353

China	1,871		2,360
Philippines	2,983		3,319
Taiwan	699		949
Japan	236		324
Other	434		578
Total foreign property and equipment, net	6,223		7,530
Total property and equipment, net	$	39,593	$	34,883

Accounts Payable and Accrued Expenses

Included in Accounts payable and accrued expenses in the Consolidated Balance Sheets are the following balances:



(In thousands)	June 29, 2019		December 29, 2018
Trade accounts payable	$	34,263	$	31,880
Liability for non-cancelable contracts	7,148		6,078
Restructuring	4,140		4,220
Other accrued expenses	6,516		9,585
Total accounts payable and accrued expenses	$	52,067	$	51,763

Long-Term Debt

6 Months Ended

Jun. 29, 2019

Debt Disclosure [Abstract]

Long-Term Debt

On May 17, 2019, we entered into a Credit Agreement (the “Credit Agreement”) with Wells Fargo Bank, National Association, as administrative agent, and other lenders. The Credit Agreement provides for a five-year secured term loan facility in an aggregate principal amount of $175.0 million and a five-year secured revolving loan facility in an aggregate principal amount of up to $75.0 million, along with other components and options, such as a letter of credit, swing line, or expansion of the revolver, currently not in use, which are more fully described in the Credit Agreement.

We used the $175.0 million of term loan proceeds and an initial $31.5 million revolving loan draw at closing to (i) repay the $204.4 million obligation outstanding under our existing Credit Agreement (the “Existing Credit Agreement”) with Jefferies Finance LLC, as administrative agent, and (ii) pay fees and expenses totaling $2.1 million incurred in connection with the new Credit Agreement. The revolving loan may be used for working capital and general corporate purposes. With the repayment of our obligations under the Existing Credit Agreement, we wrote off the remaining unamortized balance of the related original issue discount and debt costs, which we recorded as a $2.2 million loss on refinancing in Other (expense) income, net on our Consolidated Statements of Operations in the second quarter of fiscal 2019.

At our option, the term loan and the revolving loan (collectively, "long-term debt") accrue interest at a per annum rate based on either (i) the base rate plus a margin ranging from 0.25% to 1.00%, determined based on our total leverage ratio or (ii) the London Interbank Offered Rate ("LIBOR") for interest periods of 1, 2, 3 or 6 months plus a margin ranging from 1.25% to 2.00%, determined based on our total leverage ratio. The base rate is defined as the highest of (i) the federal funds rate, plus 0.50%, (ii) Wells Fargo Bank, National Association’s prime rate or (iii) the LIBOR rate for a 1-month interest period plus 1.00%. As of June 29, 2019, the effective interest rate on the term loan was 4.34%, and the effective interest rate on the revolving loan was 4.65%. Additionally, we pay a commitment fee of 0.25% on the unused portion of the revolving loan.

The term loan is payable through a combination of (i) required quarterly installments of approximately $4.4 million, and (ii) any payments due upon certain issuances of additional indebtedness and certain asset dispositions, with any remaining outstanding principal amount due and payable on the maturity date of the term loan. The revolving loan is payable at our discretion, with any remaining outstanding principal amount due and payable on the maturity date of the revolving loan.

In the first quarter of fiscal 2019, we made voluntary and mandatory principal payments totaling approximately $26.9 million under the Existing Credit Agreement. In the second quarter of fiscal 2019, prior to entering into the new Credit Agreement, we made principal payments totaling approximately $31.8 million under the Existing Credit Agreement, including a total of $25.0 million in voluntary payments and $6.8 million as a required excess cash flow payment. Following the closing of our new Credit Agreement, we made a total of $15.0 million in voluntary payments on our long-term debt. As of June 29, 2019, we had approximately $191.5 million outstanding under the Credit Agreement.

Subsequent to June 29, 2019, but before the filing date of this report, we committed to and made an additional $25.0 million voluntary payment.

The Credit Agreement contains customary affirmative and negative covenants, including covenants limiting the ability of the Company to, among other things, incur debt, grant liens, undergo certain fundamental changes, make investments, make certain restricted payments, dispose of assets, enter into transactions with affiliates, and enter into burdensome agreements, in each case, subject to limitations and exceptions set forth in the Credit Agreement. We are also required to maintain compliance with a total leverage ratio and an interest coverage ratio, in each case, determined in accordance with the terms of the Credit Agreement. We were in compliance with all such covenants in all respects at June 29, 2019.

We account for the original issue discount and the debt issuance costs as a reduction to the carrying value of our long-term debt on our Consolidated Balance Sheets, and we amortize the discount and costs to Interest expense in our Consolidated Statements of Operations over the contractual term, using the effective interest method. We determine the Current portion of long-term debt as the sum of the required quarterly installments to be made over the next twelve months, reduced by the original issue discount and the debt issuance costs to be amortized over the next twelve months.

The fair value of our long-term debt approximates the carrying value, which is reflected in our Consolidated Balance Sheets as follows:



(In thousands)	June 29, 2019			December 29, 2018
Principal amount	$	191,500		$	263,033
Unamortized original issue discount and debt costs	(2,023		)	(3,386		)
Less: Current portion of long-term debt	(17,190		)	(8,290		)
Long-term debt, net of current portion	$	172,287		$	251,357

Interest expense related to our long-term debt was included in Interest expense on our Consolidated Statements of Operations as follows:



	Three Months Ended				Six Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Contractual interest	$	2,989	$	4,762	$	7,305	$	9,290
Amortization of debt issuance costs and discount	528		551		1,215		1,058
Total interest expense related to long-term debt	$	3,517	$	5,313	$	8,520	$	10,348

Expected future principal payments are based on the schedule of required quarterly installments, adjusted for known voluntary payments. As of June 29, 2019, expected future principal payments on our long-term debt was as follows:



Fiscal year	(in thousands)

2019 (remaining 6 months)	33,750
2020	17,500
2021	17,500
2022	17,500
2023	17,500
2024	87,750
	$	191,500

Restructuring

6 Months Ended

Jun. 29, 2019

Restructuring and Related Activities [Abstract]

Restructuring

In April 2019, our management approved and executed an internal restructuring plan (the “Q2 2019 Sales Plan”) which focused on a restructuring of the global sales organization through cancellation of certain contracts and a workforce reduction. Under this plan, we incurred approximately $2.4 million of restructuring expense during the second quarter of fiscal 2019. We believe this amount approximates the total costs under the plan, subject to adjustments that may occur as the plan is fully implemented. We believe that the Q2 2019 Sales Plan will be substantially completed by the end of fiscal 2019.

In June 2018, our Board of Directors approved an internal restructuring plan (the "June 2018 Plan"), which included the discontinuation of our millimeter wave business and the use of certain assets related to our Wireless products, and a workforce reduction. Under this plan, we incurred approximately $4.1 million of restructuring expense during the second quarter and first six months of fiscal 2018. We believe this amount approximates the total costs under the plan and that this plan is substantially complete.

In June 2017, our Board of Directors approved an internal restructuring plan (the "June 2017 Plan"), which included the sale of 100% of the equity of our Hyderabad, India subsidiary and the transfer of certain assets related to our Simplay Labs testing and certification business, a worldwide workforce reduction, and an initiative to reduce our infrastructure costs, including reconfiguring our use of certain leased properties. Under this initiative approved by the Board in 2017, we vacated 100% of our facility in Portland, Oregon in the first quarter of fiscal 2019. In the second quarter of fiscal 2019, we entered into a sublease agreement for this facility under terms that differed from those used originally in estimating the Restructuring charges for ceasing use of this space. Under the terms of the sublease agreement, we have recorded an additional $0.7 million of Restructuring charges from ceasing use of this space, which includes approximately $0.2 million of impairment of the operating lease right-of-use asset for this property. Under the June 2017 Plan, we incurred approximately $0.7 million and $0.3 million of expense during the second quarter of fiscal 2019 and fiscal 2018, respectively, and approximately $2.0 million and $1.3 million of expense during the six months ended June 29, 2019 and June 30, 2018, respectively. We have incurred approximately $18.4 million of total expense incurred through June 29, 2019 under the June 2017 Plan. We expect the total cost of the June 2017 Plan to be approximately $21.5 million to $23.0 million and that it will be substantially completed by the end of fiscal 2019.

These expenses were recorded to Restructuring charges on our Consolidated Statements of Operations. The restructuring accrual balance is presented in Accounts payable and accrued expenses (includes restructuring) and in Other long-term liabilities on our Consolidated Balance Sheets. The following table displays the activity related to our restructuring plans:



(In thousands)	Severance & Related (1)			Lease Termination & Fixed Assets			Software Contracts & Engineering Tools (2)			Other (3)			Total
Accrued Restructuring at December 30, 2017	$	1,192		$	870		$	360		$	25		$	2,447
Restructuring charges	3,964			440			913			88			5,405
Costs paid or otherwise settled	(1,443		)	(593		)	(968		)	(70		)	(3,074		)
Accrued Restructuring at June 30, 2018	$	3,713		$	717		$	305		$	43		$	4,778

Accrued Restructuring at December 29, 2018	$	1,814		$	8,630		$	218		$	18		$	10,680
Restructuring charges	615			2,140			—			1,712			4,467
Costs paid or otherwise settled	(2,178		)	(3,042		)	(218		)	(56		)	(5,494		)
Accrued Restructuring at June 29, 2019	$	251		$	7,728		$	—		$	1,674		$	9,653



(1)	Includes employee relocation costs and accelerated stock compensation
(2)	Includes cancellation of contracts, asset impairments, and accelerated depreciation on certain enterprise resource planning and customer relationship management systems
(3)	Beginning in the second quarter of fiscal 2019, "Other" activity includes termination fees on the cancellation of certain contracts under the Q2 2019 Sales Plan

Leases

6 Months Ended

Jun. 29, 2019

Leases [Abstract]

Leases

We adopted ASC 842, "Leases," effective on December 30, 2018, the first day of our 2019 fiscal year, using the modified retrospective transition method. The new standard requires lessees to record assets and liabilities on the balance sheet for all leases with terms longer than 12 months. We elected the "package of practical expedients" that would allow us to carryforward our historical lease classifications, not reassess historical contracts to determine if they contain leases, and not reassess the initial direct costs for any existing leases. We also elected the practical expedient to not separate lease and non-lease components. Concurrent with our adoption of Topic 842, we have early adopted ASU 2019-01, Leases (Topic 842): Codification Improvements, which grants disclosure relief for interim periods during the year in which a company adopts Topic 842.

Right-of-use ("ROU") assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized on the commencement date of the lease based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available on the commencement date in determining the present value of lease payments. At inception, we determine if an arrangement is a lease, if it includes options to extend or terminate the lease, and if it is reasonably certain that we will exercise the options. Lease cost, representing lease payments over the term of the lease and any capitalizable direct costs less any incentives received, is recognized on a straight-line basis over the lease term as lease expense. We have operating leases for corporate offices, sales offices, research and development facilities, storage facilities, and a data center.

Our leases have remaining lease terms of 1 to 8 years, some of which include options to extend the leases for up to 5 years, and some of which include options to terminate the leases within 1 year. The exercise of lease renewal options is at our sole discretion. When deemed reasonably certain of exercise, the renewal options are included in the determination of the lease term and lease payment obligation, respectively. For our leases that contain variable lease payments, residual value guarantees, or restrictive covenants, we have concluded that these inputs are not significant to the determination of the ROU asset and lease liability. For our operating leases, the weighted-average remaining lease term is 6.5 years and the weighted-average discount rate is 7.0% as of June 29, 2019.

Our adoption of Topic 842 resulted in the non-cash recognition of additional net ROU assets and lease liabilities of approximately $29.9 million and $32.3 million, respectively, as of December 30, 2018. The difference between these amounts resulted from an adjustment to the deferred rent balance existing under the prior guidance. Adoption of this standard did not materially affect our consolidated net earnings.

All of our facilities are leased under operating leases, which expire at various times through 2027. We recorded fixed operating lease expenses of $1.9 million and $3.9 million for the second quarter and first six months of fiscal 2019, respectively.

The following table presents the lease balance classifications within the Consolidated Balance Sheets and summarizes their activity during the first six months of fiscal 2019:



Operating lease right-of-use assets	(in thousands)
Balance as of December 29, 2018	—
Right-of-use assets recorded from adoption of ASC 842	29,893
Right-of-use assets obtained in exchange for new lease obligations during the period	298
Amortization of right-of-use asset during the period	(2,907	)
Impairment of right-of-use asset on Portland, Oregon office (recorded in Restructuring charges)	(977	)
Adjustments for present value and foreign currency effects	(215	)
Balance as of June 29, 2019	26,092

Operating lease liabilities	(in thousands)
Balance as of December 29, 2018	—
Lease liabilities recorded from adoption of ASC 842	32,273
Lease liabilities incurred for new lease obligations during the period	298
Accretion of lease liabilities	999
Operating cash used by payments on lease liabilities	(4,613	)
Adjustments for present value, foreign currency, and restructuring liability effects	(361	)
Balance as of June 29, 2019	28,596
Less: Current portion of operating lease liabilities	(4,804	)
Long-term operating lease liabilities, net of current portion	23,792

Maturities of operating lease liabilities as of June 29, 2019 are as follows:



Fiscal year	(in thousands)

2019 (remaining 6 months)	$	2,963
2020	7,082
2021	5,300
2022	4,461
2023	4,589
Thereafter	11,408
Total lease payments	35,803
Less: amount representing interest	(7,048		)
Less: amount representing restructuring liability adjustments	$	(159	)
Total lease liabilities	$	28,596

Prior to 2019, the reporting of future minimum lease commitments included the lease obligations associated with previously restructured facilities. After adoption of Topic 842 for the first quarter of 2019, the lease obligations for previously restructured facilities were $7.7 million and continued to be recorded in Other long-term liabilities on our Consolidated Balance Sheets.

Intangible Assets

6 Months Ended

Jun. 29, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

On our Consolidated Balance Sheets at June 29, 2019 and December 29, 2018, Intangible assets, net are shown net of accumulated amortization of $120.6 million and $114.5 million, respectively.

We recorded amortization expense related to intangible assets on the Consolidated Statements of Operations as presented in the following table:



	Three Months Ended				Six Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Research and development	$	13	$	123	$	27	$	250
Amortization of acquired intangible assets	3,390		4,523		6,779		10,159
	$	3,403	$	4,646	$	6,806	$	10,409

During the second quarter of fiscal 2018, in addition to recurring amortization expense, we recorded an impairment charge relating to intangible assets of $11.9 million in the Consolidated Statements of Operations as a result of the strategic decision to discontinue our millimeter wave business.

Stock-Based Compensation

6 Months Ended

Jun. 29, 2019

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation

Total stock-based compensation expense included in our Consolidated Statements of Operations is presented in the following table:



	Three Months Ended				Six Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Cost of products sold	$	327	$	196	$	529	$	433
Research and development	1,246		837		2,371		2,044
Selling, general, and administrative	2,396		1,367		4,755		4,723
Total stock-based compensation	$	3,969	$	2,400	$	7,655	$	7,200

Market-Based and Performance-Based Stock Compensation

In fiscal years 2019 and 2018, we granted various awards of RSUs with either a market condition or a performance condition to certain executives. We have not modified the conditions for the vesting of these awards, or our policy for valuing them, from that disclosed in "Note 17 - Stock-Based Compensation Plans" in our 2018 10-K. For these awards, we incurred stock compensation expense of approximately $1.1 million and $0.2 million in the second quarter of fiscal 2019 and fiscal 2018, respectively, and of approximately $2.0 million and $0.5 million in the first six months of fiscal 2019 and fiscal 2018, respectively, which is recorded as a component of total stock-based compensation expense.

The following table summarizes the activity for our awards with a market or performance condition during the first six months of fiscal 2019:



(Shares in thousands)	Unvested		Vested	Total
Balance, December 29, 2018	909		—	909
Granted	265		—	265
Canceled	(106	)	—	(106	)
Balance, June 29, 2019	1,068		—	1,068

Income Taxes	6 Months Ended
Income Taxes	Jun. 29, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are subject to federal and state income tax as well as income tax in the foreign jurisdictions in which we operate. For the second quarter of fiscal 2019 and fiscal 2018, we recorded an income tax expense of approximately $0.2 million and $1.3 million, respectively, and for the first six months of fiscal 2019 and fiscal 2018, we recorded an income tax expense of approximately $0.4 million and $1.9 million, respectively. Income taxes for the three and six month periods ended June 29, 2019 and June 30, 2018 represent tax at the federal, state, and foreign statutory tax rates adjusted for withholding taxes, changes in uncertain tax positions, changes in the U.S. valuation allowance, 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 21% and our effective tax rate for the three and six months ended June 29, 2019 resulted from foreign income and withholding taxes offset with release of uncertain tax positions due to lapsing of the statute of limitations. For the three and six months ended June 30, 2018, the difference resulted from an increase in the valuation allowance that offset expected tax benefit in the United States, foreign rate differential and withholding taxes, zero tax rate in Bermuda which resulted in no tax benefit for the pretax loss in Bermuda, and discrete benefit from the release of uncertain tax positions. Through June 29, 2019, we continued to evaluate the valuation allowance position in the United States and concluded that we should maintain a full valuation allowance against the net federal and state deferred tax assets. In making this evaluation, we exercised significant judgment and considered estimates about our ability to generate revenue and taxable profits sufficient to offset expenditures in future periods within the U.S. It is reasonably possible that during the next twelve months, we will establish a sustained level of profitability in the U.S. As a result, we may reverse a significant portion of the valuation allowance recorded against our U.S. deferred tax assets. The reversal would result in an income tax benefit for the quarterly and annual fiscal period in which we release the valuation allowance. We will continue to evaluate both positive and negative evidence in future periods to determine if we should recognize more deferred tax assets. We do not have a valuation allowance in any foreign jurisdictions as we have concluded it is more likely than not we will realize the net deferred tax assets in future periods. At June 29, 2019, it is reasonably possible that $1.5 million of unrecognized tax benefits and $0.1 million of associated interest and penalties could be recognized during the next twelve months. The $1.6 million potential change would represent a decrease in unrecognized tax benefits, comprised of items related to tax filings for years that will no longer be subject to examination under expiring statutes of limitations. Our liability for uncertain tax positions (including penalties and interest) was $25.9 million and $26.3 million at June 29, 2019 and December 29, 2018, respectively, and is recorded as a component of Other long-term liabilities on our Consolidated Balance Sheets. The remainder of our uncertain tax position exposure of $24.8 million is netted against deferred tax assets. We are not currently paying U.S. federal income taxes and do not expect to pay such taxes until we fully utilize our tax net operating loss ("NOL") and credit carryforwards. We expect to pay a nominal amount of state income tax. We are paying foreign income and withholding taxes, which are reflected in Income tax expense in our Consolidated Statements of Operations and are primarily related to the cost of operating offshore activities and subsidiaries. We accrue interest and penalties related to uncertain tax positions in Income tax expense.

Contingencies	6 Months Ended
Contingencies	Jun. 29, 2019
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Matters On or about December 19, 2018, Steven A.W. De Jaray, Perienne De Jaray and Darrell R. Oswald (collectively, the “Plaintiffs”) commenced an action against the Company and several unnamed defendants in the Multnomah County Circuit Court of the State of Oregon, in connection with the sale of certain products by the Company to the Plaintiffs in or around 2008. The Plaintiffs allege that we violated The Lanham Act, engaged in negligence and fraud by failing to disclose to the Plaintiffs the export-controlled status of the subject parts. The Plaintiffs seek damages of $138 million, treble damages, and other remedies. In January 2019, we removed the action to the United States District Court for the District of Oregon. At this stage of the proceedings, we do not have an estimate of the likelihood or the amount of any potential exposure to the Company; however, we believe that these claims are without merit and intend to vigorously defend the action. From time to time, we are exposed to certain asserted and unasserted potential claims. 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. 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.

Basis of Presentation, and Updates to Accounting Policies (Policies)	6 Months Ended
	Jun. 29, 2019
Accounting Policies [Abstract]
Basis of Presentation	The accompanying Consolidated Financial Statements are unaudited and have been prepared by us in accordance with U.S. Generally Accepted Accounting Principles ("U.S. GAAP") and pursuant to the rules and regulations of the SEC. In our opinion, they include all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of results for the interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by the SEC's rules and regulations for interim reporting. 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 year ended December 29, 2018 ("2018 10-K").
Use of Estimates	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments affecting the amounts reported in our consolidated condensed financial statements and the accompanying notes. The actual results that we experience may differ materially from our estimates.
Fiscal Reporting Period	Fiscal Reporting Period We report based on a 52 or 53 week fiscal year ending on the Saturday closest to December 31. Our second quarter of fiscal 2019 and second quarter of fiscal 2018 ended on June 29, 2019 and June 30, 2018, respectively. All references to quarterly or six months ended financial results are references to the results for the relevant 13-week or 26-week fiscal period.
Concentration Risk	Concentrations of Risk Distributors have historically accounted for a significant portion of our total revenue.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), which clarifies the accounting for implementation costs in cloud computing arrangements. This guidance is effective for interim and annual reporting periods beginning after December 15, 2019, and early adoption is permitted. We are currently assessing the impact of ASU 2018-15 on our consolidated financial statements and related disclosures.
Leases	We adopted ASC 842, "Leases," effective on December 30, 2018, the first day of our 2019 fiscal year, using the modified retrospective transition method. The new standard requires lessees to record assets and liabilities on the balance sheet for all leases with terms longer than 12 months. We elected the "package of practical expedients" that would allow us to carryforward our historical lease classifications, not reassess historical contracts to determine if they contain leases, and not reassess the initial direct costs for any existing leases. We also elected the practical expedient to not separate lease and non-lease components. Concurrent with our adoption of Topic 842, we have early adopted ASU 2019-01, Leases (Topic 842): Codification Improvements, which grants disclosure relief for interim periods during the year in which a company adopts Topic 842. Right-of-use ("ROU") assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized on the commencement date of the lease based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available on the commencement date in determining the present value of lease payments. At inception, we determine if an arrangement is a lease, if it includes options to extend or terminate the lease, and if it is reasonably certain that we will exercise the options. Lease cost, representing lease payments over the term of the lease and any capitalizable direct costs less any incentives received, is recognized on a straight-line basis over the lease term as lease expense. We have operating leases for corporate offices, sales offices, research and development facilities, storage facilities, and a data center.

Net Income (Loss) per Share (Tables)

6 Months Ended

Jun. 29, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Reconciliation

A summary of basic and diluted Net income (loss) per share is presented in the following table:



	Three Months Ended					Six Months Ended
(in thousands, except per share data)	June 29, 2019		June 30, 2018			June 29, 2019		June 30, 2018
Net income (loss)	$	8,559	$	(20,223	)	$	15,967	$	(26,175	)

Shares used in basic Net income (loss) per share	132,206		124,843			131,599		124,460
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition	5,015		—			4,534		—
Shares used in diluted Net income (loss) per share	137,221		124,843			136,133		124,460

Basic Net income (loss) per share	$	0.06	$	(0.16	)	$	0.12	$	(0.21	)
Diluted Net income (loss) per share	$	0.06	$	(0.16	)	$	0.12	$	(0.21	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share



	Three Months Ended		Six Months Ended
(in thousands)	June 29, 2019	June 30, 2018	June 29, 2019	June 30, 2018
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive	73	9,169	210	9,376

Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 29, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue



Major Class of Revenue	Three Months Ended		Six Months Ended
(In thousands)	June 29, 2019	June 30, 2018	June 29, 2019	June 30, 2018
Product revenue - Distributors	86,627	88,790	164,099	174,747
Product revenue - Direct	11,469	9,504	25,609	18,656
Licensing and services revenue	4,200	4,421	10,679	7,935
Total revenue	102,296	102,715	200,387	201,338

Revenue by Geographical Market	Three Months Ended		Six Months Ended
(In thousands)	June 29, 2019	June 30, 2018	June 29, 2019	June 30, 2018
Asia	76,845	77,899	145,856	149,820
Europe	12,585	12,162	24,795	24,304
Americas	12,866	12,654	29,736	27,214
Total revenue	102,296	102,715	200,387	201,338

Contracts with Customers



(In thousands)
Contract assets as of December 29, 2018	$	9,143
Revenues recorded during the period	5,171
Transferred to Accounts receivable or collected	(1,885		)
Contract assets as of June 29, 2019	$	12,429



(In thousands)
Contract liabilities as of December 29, 2018	$	1,614
Accruals for estimated future stock rotation and scrap returns	3,347
Less: Release of accruals for recognized stock rotation and scrap returns	(2,461		)
Prepayment for products to be manufactured and delivered to the customer within six months	751
Contract liabilities as of June 29, 2019	$	3,251

Balance Sheet Components (Tables)

6 Months Ended

Jun. 29, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Short-Term Marketable Securities

The following table summarizes the maturities of our formerly-held Short-term marketable securities at fair value.



(In thousands)	June 29, 2019		December 29, 2018
Short-term marketable securities:
Maturing within one year	$	—	$	7,454
Maturing between one and two years	—		2,170
Total marketable securities	$	—	$	9,624

Schedule of Accounts Receivable



(In thousands)	June 29, 2019			December 29, 2018
Accounts receivable	$	38,077		$	61,087
Less: Allowance for doubtful accounts	(184		)	(197		)
Accounts receivable, net of allowance for doubtful accounts	$	37,893		$	60,890

Schedule of Inventories



(In thousands)	June 29, 2019		December 29, 2018
Work in progress	$	46,117	$	47,224
Finished goods	18,847		19,872
Total inventories	$	64,964	$	67,096

Schedule of Property, Plant and Equipment

Our Property and equipment, net by country at the end of each period was as follows:



(In thousands)	June 29, 2019		December 29, 2018
United States	$	33,370	$	27,353

China	1,871		2,360
Philippines	2,983		3,319
Taiwan	699		949
Japan	236		324
Other	434		578
Total foreign property and equipment, net	6,223		7,530
Total property and equipment, net	$	39,593	$	34,883

Schedule of Accounts Payable and Accrued Expenses

Included in Accounts payable and accrued expenses in the Consolidated Balance Sheets are the following balances:



(In thousands)	June 29, 2019		December 29, 2018
Trade accounts payable	$	34,263	$	31,880
Liability for non-cancelable contracts	7,148		6,078
Restructuring	4,140		4,220
Other accrued expenses	6,516		9,585
Total accounts payable and accrued expenses	$	52,067	$	51,763

Long-Term Debt (Tables)

6 Months Ended

Jun. 29, 2019

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The fair value of our long-term debt approximates the carrying value, which is reflected in our Consolidated Balance Sheets as follows:



(In thousands)	June 29, 2019			December 29, 2018
Principal amount	$	191,500		$	263,033
Unamortized original issue discount and debt costs	(2,023		)	(3,386		)
Less: Current portion of long-term debt	(17,190		)	(8,290		)
Long-term debt, net of current portion	$	172,287		$	251,357

Interest Income and Interest Expense Disclosure

Interest expense related to our long-term debt was included in Interest expense on our Consolidated Statements of Operations as follows:



	Three Months Ended				Six Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Contractual interest	$	2,989	$	4,762	$	7,305	$	9,290
Amortization of debt issuance costs and discount	528		551		1,215		1,058
Total interest expense related to long-term debt	$	3,517	$	5,313	$	8,520	$	10,348

Schedule of Debt

As of June 29, 2019, expected future principal payments on our long-term debt was as follows:



Fiscal year	(in thousands)

2019 (remaining 6 months)	33,750
2020	17,500
2021	17,500
2022	17,500
2023	17,500
2024	87,750
	$	191,500

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Restructuring (Tables)

6 Months Ended

Jun. 29, 2019

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The following table displays the activity related to our restructuring plans:



(In thousands)	Severance & Related (1)			Lease Termination & Fixed Assets			Software Contracts & Engineering Tools (2)			Other (3)			Total
Accrued Restructuring at December 30, 2017	$	1,192		$	870		$	360		$	25		$	2,447
Restructuring charges	3,964			440			913			88			5,405
Costs paid or otherwise settled	(1,443		)	(593		)	(968		)	(70		)	(3,074		)
Accrued Restructuring at June 30, 2018	$	3,713		$	717		$	305		$	43		$	4,778

Accrued Restructuring at December 29, 2018	$	1,814		$	8,630		$	218		$	18		$	10,680
Restructuring charges	615			2,140			—			1,712			4,467
Costs paid or otherwise settled	(2,178		)	(3,042		)	(218		)	(56		)	(5,494		)
Accrued Restructuring at June 29, 2019	$	251		$	7,728		$	—		$	1,674		$	9,653



(1)	Includes employee relocation costs and accelerated stock compensation
(2)	Includes cancellation of contracts, asset impairments, and accelerated depreciation on certain enterprise resource planning and customer relationship management systems
(3)	Beginning in the second quarter of fiscal 2019, "Other" activity includes termination fees on the cancellation of certain contracts under the Q2 2019 Sales Plan

Leases (Tables)

6 Months Ended

Jun. 29, 2019

Leases [Abstract]

Schedule of Lease Balance Classifications Within Consolidated Balance Sheets and Lease Activities

The following table presents the lease balance classifications within the Consolidated Balance Sheets and summarizes their activity during the first six months of fiscal 2019:



Operating lease right-of-use assets	(in thousands)
Balance as of December 29, 2018	—
Right-of-use assets recorded from adoption of ASC 842	29,893
Right-of-use assets obtained in exchange for new lease obligations during the period	298
Amortization of right-of-use asset during the period	(2,907	)
Impairment of right-of-use asset on Portland, Oregon office (recorded in Restructuring charges)	(977	)
Adjustments for present value and foreign currency effects	(215	)
Balance as of June 29, 2019	26,092

Operating lease liabilities	(in thousands)
Balance as of December 29, 2018	—
Lease liabilities recorded from adoption of ASC 842	32,273
Lease liabilities incurred for new lease obligations during the period	298
Accretion of lease liabilities	999
Operating cash used by payments on lease liabilities	(4,613	)
Adjustments for present value, foreign currency, and restructuring liability effects	(361	)
Balance as of June 29, 2019	28,596
Less: Current portion of operating lease liabilities	(4,804	)
Long-term operating lease liabilities, net of current portion	23,792

Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities as of June 29, 2019 are as follows:



Fiscal year	(in thousands)

2019 (remaining 6 months)	$	2,963
2020	7,082
2021	5,300
2022	4,461
2023	4,589
Thereafter	11,408
Total lease payments	35,803
Less: amount representing interest	(7,048		)
Less: amount representing restructuring liability adjustments	$	(159	)
Total lease liabilities	$	28,596

Intangible Assets (Tables)

6 Months Ended

Jun. 29, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Finite-lived Intangible Assets Amortization Expense

We recorded amortization expense related to intangible assets on the Consolidated Statements of Operations as presented in the following table:



	Three Months Ended				Six Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Research and development	$	13	$	123	$	27	$	250
Amortization of acquired intangible assets	3,390		4,523		6,779		10,159
	$	3,403	$	4,646	$	6,806	$	10,409

Stock-Based Compensation (Tables)

6 Months Ended

Jun. 29, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Stock-Based Compensation Expense

Total stock-based compensation expense included in our Consolidated Statements of Operations is presented in the following table:



	Three Months Ended				Six Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Cost of products sold	$	327	$	196	$	529	$	433
Research and development	1,246		837		2,371		2,044
Selling, general, and administrative	2,396		1,367		4,755		4,723
Total stock-based compensation	$	3,969	$	2,400	$	7,655	$	7,200

Share-based Compensation, Stock Options, Activity

The following table summarizes the activity for our awards with a market or performance condition during the first six months of fiscal 2019:



(Shares in thousands)	Unvested		Vested	Total
Balance, December 29, 2018	909		—	909
Granted	265		—	265
Canceled	(106	)	—	(106	)
Balance, June 29, 2019	1,068		—	1,068

Basis of Presentation, and Updates to Accounting Policies (Concentrations Risk) (Details) - Sell-Through Distributors Concentration Risk	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 29, 2018
Revenue
Concentration Risk [Line Items]
Concentration risk percentage	85.00%	86.00%	82.00%	87.00%
Arrow Electronics Inc. \| Trade receivables
Concentration Risk [Line Items]
Concentration risk percentage			36.00%		41.00%
Weikeng Group \| Trade receivables
Concentration Risk [Line Items]
Concentration risk percentage			35.00%		23.00%
Third Largest Distributor \| Trade receivables
Concentration Risk [Line Items]
Concentration risk percentage			11.00%

Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income (loss)	$ 8,559	$ (20,223)	$ 15,967	$ (26,175)
Shares used in basic Net income (loss) per share (in shares)	132,206	124,843	131,599	124,460
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition (in shares)	5,015	0	4,534	0
Shares used in diluted Net income (loss) per share (in shares)	137,221	124,843	136,133	124,460
Basic Net income (loss) per share (in usd per share)	$ 0.06	$ (0.16)	$ 0.12	$ (0.21)
Diluted Net income (loss) per share (in usd per share)	$ 0.06	$ (0.16)	$ 0.12	$ (0.21)
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive	73	9,169	210	9,376

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=117327953&loc=d3e4984-109258

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(21))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1252-109256

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=117327953&loc=d3e4984-109258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1252-109256

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(21))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

+ Details

- Definition

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

+ References + Details

Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 102,296	$ 102,715	$ 200,387	$ 201,338
Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	76,845	77,899	145,856	149,820
Europe
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	12,585	12,162	24,795	24,304
Americas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	12,866	12,654	29,736	27,214
Product revenue - Distributors
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	86,627	88,790	164,099	174,747
Product revenue - Direct
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	11,469	9,504	25,609	18,656
Licensing and services revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 4,200	$ 4,421	$ 10,679	$ 7,935

Revenue from Contracts with Customers (Contract Assets) (Details) $ in Thousands	6 Months Ended
	Jun. 29, 2019 USD ($)
Movement In Contract With Customer, Asset, Net [Roll Forward]
Beginning balance	$ 9,143
Revenues recorded during the period	5,171
Transferred to accounts receivable or collected	(1,885)
Ending balance	$ 12,429

Revenue from Contracts with Customers (Contract Liability) (Details) $ in Thousands	6 Months Ended
	Jun. 29, 2019 USD ($)
Movement In Contract With Customer, Liability, Net [Roll Forward]
Beginning balance	$ 1,614
Accruals for estimated future stock rotation and scrap returns	3,347
Less: Release of accruals for recognized stock rotation and scrap returns	(2,461)
Prepayment for products to be manufactured and delivered to the customer within six months	751
Ending balance	3,251
Processing of RMAs	2,800
Net revenue reduction	$ (300)

Revenue from Contracts with Customers (Other Matters) (Details)	6 Months Ended
	Jun. 29, 2019
Revenue from Contract with Customer [Abstract]
Royalties review period	3 years

Balance Sheet Components (Short-Term Marketable Securities) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Dec. 29, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Short-term marketable securities term	2 years
Short-term marketable securities, maturing within one year	$ 0	$ 7,454
Short-term marketable securities, maturing between one and two years	0	2,170
Total marketable securities	$ 0	$ 9,624

Balance Sheet Components (Accounts Receivable) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable	$ 38,077	$ 61,087
Less: Allowance for doubtful accounts	(184)	(197)
Accounts receivable, net of allowance for doubtful accounts	$ 37,893	$ 60,890

Balance Sheet Components (Inventories) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Work in progress	$ 46,117	$ 47,224
Finished goods	18,847	19,872
Total inventories	$ 64,964	$ 67,096

Balance Sheet Components (Property and Equipment) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Property, Plant and Equipment [Line Items]
Total property and equipment, net	$ 39,593	$ 34,883
United States
Property, Plant and Equipment [Line Items]
Total property and equipment, net	33,370	27,353
Foreign countries
Property, Plant and Equipment [Line Items]
Total property and equipment, net	6,223	7,530
China
Property, Plant and Equipment [Line Items]
Total property and equipment, net	1,871	2,360
Philippines
Property, Plant and Equipment [Line Items]
Total property and equipment, net	2,983	3,319
Taiwan
Property, Plant and Equipment [Line Items]
Total property and equipment, net	699	949
Japan
Property, Plant and Equipment [Line Items]
Total property and equipment, net	236	324
Other
Property, Plant and Equipment [Line Items]
Total property and equipment, net	$ 434	$ 578

Balance Sheet Components (Accounts Payable and Accrued Expenses) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Trade accounts payable	$ 34,263	$ 31,880
Liability for non-cancelable contracts	7,148	6,078
Restructuring	4,140	4,220
Other accrued expenses	6,516	9,585
Accounts Payable and Accrued Liabilities, Current	$ 52,067	$ 51,763

Long-Term Debt (Narrative) (Details) - USD ($)		1 Months Ended		3 Months Ended		6 Months Ended
Long-Term Debt (Narrative) (Details) - USD ($)	May 17, 2019	Aug. 01, 2019	Jun. 29, 2019	Jun. 29, 2019	Mar. 30, 2019	Jun. 29, 2019	Jun. 30, 2018	Dec. 29, 2018
Debt Instrument [Line Items]
Debt principal amount			$ 191,500,000	$ 191,500,000		$ 191,500,000
Payment of debt issuance cost						2,086,000	$ 0
Loss on re-financing of long-term debt				2,200,000		2,235,000	$ 0
Long-term debt			191,500,000	191,500,000		191,500,000		$ 263,033,000
Existing Credit Agreement
Debt Instrument [Line Items]
Repayments of debt	$ 204,400,000				$ 26,900,000
Debt principal payment				31,800,000
Debt voluntary payments				25,000,000
Payments of excess cash flow payment				6,800,000
Secured Debt \| Credit Agreement, May 17, 2019
Debt Instrument [Line Items]
Payment of debt issuance cost	2,100,000
Debt voluntary payments			15,000,000
Long-term debt			$ 191,500,000	$ 191,500,000		$ 191,500,000
Secured Debt \| Credit Agreement, May 17, 2019 \| Subsequent Event
Debt Instrument [Line Items]
Debt voluntary payments		$ 25,000,000
Secured Debt \| Term Loan
Debt Instrument [Line Items]
Debt principal amount	$ 175,000,000
Debt instrument, term	5 years
Amount drawn	$ 175,000,000
Debt instrument, interest rate, effective percentage			4.34%	4.34%		4.34%
Debt instrument, periodic payment						$ 4,400,000
Revolving Credit Facility \| Secured Debt
Debt Instrument [Line Items]
Debt principal amount	$ 75,000,000
Debt instrument, term	5 years
Amount drawn	$ 31,500,000
Debt instrument, interest rate, effective percentage			4.65%	4.65%		4.65%
Commitment fee percentage						0.25%
Option One \| Minimum \| Secured Debt \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						0.25%
Option One \| Maximum \| Secured Debt \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.00%
Option Two \| Secured Debt \| Credit Agreement, May 17, 2019 \| Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						0.50%
Option Two \| Minimum \| Secured Debt \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.25%
Option Two \| Maximum \| Secured Debt \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						2.00%
Option Three \| Secured Debt \| Credit Agreement, May 17, 2019 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.00%

Long-Term Debt (Debt Schedule) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Debt Disclosure [Abstract]
Principal amount	$ 191,500	$ 263,033
Unamortized original issue discount and debt costs	(2,023)	(3,386)
Less: Current portion of long-term debt	(17,190)	(8,290)
Long-term debt, net of current portion	$ 172,287	$ 251,357

Long-Term Debt (Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Debt Disclosure [Abstract]
Contractual interest	$ 2,989	$ 4,762	$ 7,305	$ 9,290
Amortization of debt issuance costs and discount	528	551	1,215	1,058
Total interest expense related to long-term debt	$ 3,517	$ 5,313	$ 8,520	$ 10,348

Long-Term Debt (Future Principal Payments) (Details) $ in Thousands	Jun. 29, 2019 USD ($)
Debt Disclosure [Abstract]
2019 (remaining 6 months)	$ 33,750
2020	17,500
2021	17,500
2022	17,500
2023	17,500
2024	87,750
Total	$ 191,500

Restructuring (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,126	$ 4,376	$ 4,467	$ 5,405
Impairment of operating lease right-of-use asset (recorded in Restructuring charges)			977	0
Q2 2019 Sales Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,400
June 2018 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4,100		4,100
June 2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	700	$ 300	2,000	$ 1,300
Restructuring and related cost, cost incurred to date	18,400		18,400
Minimum \| June 2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	21,500		21,500
Maximum \| June 2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 23,000		23,000
Lease Termination & Fixed Assets \| June 2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 700
Percentage of facility vacated			100.00%
Impairment of operating lease right-of-use asset (recorded in Restructuring charges)			$ 200
Hyderabad
Restructuring Cost and Reserve [Line Items]
Ownership percentage					100.00%

Restructuring (Schedule of Restructuring Activities) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Accrued Restructuring at beginning of the period	$ 10,680	$ 2,447
Restructuring charges	4,467	5,405
Costs paid or otherwise settled	(5,494)	(3,074)
Accrued Restructuring at the end of the period	9,653	4,778
Severance & related
Restructuring Reserve [Roll Forward]
Accrued Restructuring at beginning of the period	1,814	1,192
Restructuring charges	615	3,964
Costs paid or otherwise settled	(2,178)	(1,443)
Accrued Restructuring at the end of the period	251	3,713
Lease Termination & Fixed Assets
Restructuring Reserve [Roll Forward]
Accrued Restructuring at beginning of the period	8,630	870
Restructuring charges	2,140	440
Costs paid or otherwise settled	(3,042)	(593)
Accrued Restructuring at the end of the period	7,728	717
Software Contracts & Engineering Tools
Restructuring Reserve [Roll Forward]
Accrued Restructuring at beginning of the period	218	360
Restructuring charges	0	913
Costs paid or otherwise settled	(218)	(968)
Accrued Restructuring at the end of the period	0	305
Other
Restructuring Reserve [Roll Forward]
Accrued Restructuring at beginning of the period	18	25
Restructuring charges	1,712	88
Costs paid or otherwise settled	(56)	(70)
Accrued Restructuring at the end of the period	$ 1,674	$ 43

Leases (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Leases (Narrative) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Jun. 29, 2019	Dec. 30, 2018	Dec. 29, 2018
Lessee, Lease, Description [Line Items]
Leases renewal term (up to)	5 years	5 years
Leases termination period (within)		1 year
Operating leases, the weighted-average remaining lease term	6 years 6 months	6 years 6 months
Operating leases, weighted-average discount rate	7.00%	7.00%
Operating lease right-of-use assets	$ 26,092	$ 26,092		$ 0
Total lease liabilities	28,596	28,596		$ 0
Fixed operating lease expenses	1,900	3,900
Operating leases obligation for previously restructured facilities	$ 7,700	$ 7,700
Minimum
Lessee, Lease, Description [Line Items]
Leases remaining term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Leases remaining term		8 years
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets			$ 29,900
Total lease liabilities			$ 32,300

Leases (Schedule of Lease Balance Classifications Within Consolidated Balance Sheets and Lease Activities) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Operating lease right-of-use assets
Balance as of December 29, 2018	$ 0
Right-of-use assets recorded from adoption of ASC 842	29,893
Right-of-use assets obtained in exchange for new lease obligations during the period	298	$ 0
Amortization of right-of-use asset during the period	(2,907)
Impairment of right-of-use asset on Portland, Oregon office (recorded in Restructuring charges)	(977)	0
Adjustments for present value and foreign currency effects	(215)
Balance as of June 29, 2019	26,092
Operating lease liabilities
Balance as of December 29, 2018	0
Lease liabilities recorded from adoption of ASC 842	32,273
Lease liabilities incurred for new lease obligations during the period	298
Accretion of lease liabilities	999
Operating cash used by payments on lease liabilities	(4,613)	$ 0
Adjustments for present value, foreign currency, and restructuring liability effects	(361)
Balance as of June 29, 2019	28,596
Less: Current portion of operating lease liabilities	4,804
Long-term operating lease liabilities, net of current portion	$ 23,792

Leases (Maturities of Operating Lease Liabilities) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Leases [Abstract]
2019 (remaining 6 months)	$ 2,963
2020	7,082
2021	5,300
2022	4,461
2023	4,589
Thereafter	11,408
Total lease payments	35,803
Less: amount representing interest	(7,048)
Less: amount representing restructuring liability adjustments	(159)
Total lease liabilities	$ 28,596	$ 0

Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 29, 2018
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization, intangible assets	$ 120,600		$ 120,600		$ 114,500
Amortization of acquired intangible assets	3,403	$ 4,646	6,806	$ 10,409
Amortization of impairment charge relating to intangible assets	0	11,900	0	11,900
Research and development
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets	13	123	27	250
Amortization of acquired intangible assets
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets	$ 3,390	$ 4,523	$ 6,779	$ 10,159

Stock-Based Compensation (Stock-based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 3,969	$ 2,400	$ 7,655	$ 7,200
Cost of products sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	327	196	529	433
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	1,246	837	2,371	2,044
Selling, general, and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 2,396	$ 1,367	$ 4,755	$ 4,723

Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 3,969	$ 2,400	$ 7,655	$ 7,200
Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 1,100	$ 200	$ 2,000	$ 500

Stock-Based Compensation (Schedule of Activity for Stock Options with Market Condition) (Details) - Performance Shares shares in Thousands	6 Months Ended
	Jun. 29, 2019 shares
Unvested
Beginning balance, shares	909
Granted, shares	265
Canceled, shares	(106)
Ending balance, shares	1,068
Total
Beginning balance, shares	909
Granted, shares	265
Canceled, shares	(106)
Ending balance, shares	1,068

Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
Income Taxes (Details) - USD ($)	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 29, 2018
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Income tax expense	$ 180,000	$ 1,343,000	$ 414,000	$ 1,940,000
Unrecognized tax benefits that could significantly change during the next twelve months	1,500,000		1,500,000
Unrecognized tax benefits, associated interest and penalties that could significantly change within the next twelve months	100,000		100,000
Total potential decrease in UTB	1,600,000		1,600,000
Uncertain tax position exposure netted against deferred tax assets	24,800,000		24,800,000
Other Long-term Liabilities
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Uncertain tax positions	$ 25,900,000		25,900,000		$ 26,300,000
Bermuda
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Income tax expense			$ 0
Statutory tax rate			0.00%

Contingencies (Details) $ in Millions	Dec. 19, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Damages sought, value	$ 138