Tessera (TSRA) 10-K 22 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Jan. 28, 2016	Jun. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	TESSERA TECHNOLOGIES INC
Trading Symbol	TSRA
Entity Central Index Key	1,261,694
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		50,305,378
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,964,222,484

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 22,599	$ 50,908
Short-term investments	359,145	383,513
Accounts receivable, net	1,784	4,478
Short-term deferred tax assets	0	19,334
Other current assets	28,130	17,277
Total current assets	411,658	475,510
Property and equipment, net	3,748	4,322
Intangible assets, net	95,089	72,925
Long-term deferred tax assets	15,649	21,759
Other assets	13,208	2,607
Total assets	539,352	577,123
Current liabilities:
Accounts payable	1,090	3,509
Accrued legal fees	2,621	4,143
Accrued liabilities	10,262	13,284
Deferred revenue	6,805	10,217
Other current liabilities	0	2,873
Total current liabilities	20,778	34,026
Long-term deferred tax liabilities	255	187
Other long-term liabilities	$ 3,162	$ 1,551
Commitments and contingencies
Stockholders’ equity:
Preferred stock: $0.001 par value; 10,000 shares authorized and no shares issued and outstanding	$ 0	$ 0
Common stock: $0.001 par value; 150,000 shares authorized; 58,692 and 57,800 shares issued, respectively, and 50,294 and 52,840 shares outstanding, respectively	58	58
Additional paid-in capital	599,186	576,341
Treasury stock at cost; 8,398 and 4,960 shares of common stock at each period end, respectively	(229,513)	(106,231)
Accumulated other comprehensive loss	(1,437)	(333)
Retained earnings	146,863	71,524
Total stockholders’ equity	515,157	541,359
Total liabilities and stockholders’ equity	$ 539,352	$ 577,123

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
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 (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	58,692,000	57,800,000
Common stock, shares outstanding	50,294,000	52,840,000
Treasury stock, shares	8,398,000	4,960,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Royalty and license fees	$ 273,300	$ 278,807	$ 168,811
Total revenues	273,300	278,807	168,811
Operating expenses:
Cost of revenues	566	384	178
Research, development and other related costs	32,181	32,270	28,063
Selling, general and administrative	43,592	47,208	62,580
Amortization expense	20,624	18,471	19,269
Litigation expense	14,135	25,116	60,310
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents	0	(10,338)	4,668
Total operating expenses	111,098	113,111	175,068
Operating income (loss)	162,202	165,696	(6,257)
Other income and expense, net	3,432	1,550	1,208
Income (loss) before taxes from continuing operations	165,634	167,246	(5,049)
Provision for (benefit from) income taxes	48,517	(7,697)	35,860
Income (loss) from continuing operations	117,117	174,943	(40,909)
Loss from discontinued operations, net of tax	(101)	(4,489)	(144,646)
Net income (loss)	$ 117,016	$ 170,454	$ (185,555)
Income (loss) per share:
Income (loss) from continuing operations - Basic (in dollars per share)	$ 2.26	$ 3.31	$ (0.77)
Income (loss) from continuing operations - Diluted (in dollars per share)	2.23	3.27	(0.77)
Income (loss) from discontinued operations - Basic (in dollars per share)	0	(0.08)	(2.71)
Income (loss) from discontinued operations - Diluted (in dollars per share)	0	(0.08)	(2.71)
Net income (loss):
Net Income (Loss) - Basic (in dollars per share)	2.26	3.23	(3.48)
Net Income (Loss) - Diluted (in dollars per share)	2.23	3.18	(3.48)
Cash dividends declared per share (in dollars per share)	$ 0.80	$ 0.92	$ 0.70
Weighted average number of shares used in per share calculations-basic (in shares)	51,802	52,819	53,346
Weighted average number of shares used in per share calculations-diluted (in shares)	52,586	53,563	53,346

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 117,016	$ 170,454	$ (185,555)
Other comprehensive income (loss):
Net unrealized gains (losses) on available-for- sale securities, net of tax	(1,104)	(466)	14
Other comprehensive income (loss)	(1,104)	(466)	14
Comprehensive income (loss)	$ 115,912	$ 169,988	$ (185,541)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Deficit)
Beginning balance (in shares) at Dec. 31, 2012		52,293		654
Beginning balance at Dec. 31, 2012	$ 642,425	$ 53	$ 480,347	$ (10,642)	$ 119	$ 172,548
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(185,555)					(185,555)
Other comprehensive income (loss)	14				14	0
Cash dividends paid on company common stock	(37,588)					(37,588)
Issuance of common stock in connection with exercise of stock options (in shares)		2,031
Issuance of common stock in connection with exercise of stock options	$ 33,521	$ 1	33,520
Issuance of common stock in connection with employee common stock purchase plan (in shares)	288	288
Issuance of common stock in connection with employee common stock purchase plan	$ 3,417	$ 0	3,417
Issuance of restricted stock, net of shares cancelled (in shares)		351
Issuance of restricted stock, net of shares canceled	1	$ 1	0
Repurchases of common stock (in shares)		(1,521)		(1,521)
Repurchases of common stock	(29,301)		(25)	$ (29,276)
Stock-based compensation expense	13,503		13,503
Ending balance (in shares) at Dec. 31, 2013		53,442		2,175
Ending balance at Dec. 31, 2013	440,437	$ 55	530,762	$ (39,918)	133	(50,595)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	170,454					170,454
Other comprehensive income (loss)	(466)				(466)	0
Cash dividends paid on company common stock	(48,335)					(48,335)
Issuance of common stock in connection with exercise of stock options (in shares)		1,797
Issuance of common stock in connection with exercise of stock options	$ 32,580	$ 2	32,578
Issuance of common stock in connection with employee common stock purchase plan (in shares)	137	137
Issuance of common stock in connection with employee common stock purchase plan	$ 1,700	$ 0	1,700
Issuance of restricted stock, net of shares cancelled (in shares)		249
Issuance of restricted stock, net of shares canceled	1	$ 1	0
Repurchases of common stock, shares exchanged (in shares)				29
Repurchases of common stock, shares exchanged	$ (761)			$ (761)
Repurchases of common stock (in shares)	(4,901)	(2,785)		(2,756)
Repurchases of common stock	$ (65,552)	$ 0	0	$ (65,552)
Stock-based compensation expense	13,269		13,269
Tax effect from employee stock option plan	(1,968)		(1,968)
Ending balance (in shares) at Dec. 31, 2014		52,840		4,960
Ending balance at Dec. 31, 2014	541,359	$ 58	576,341	$ (106,231)	(333)	71,524
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	117,016					117,016
Other comprehensive income (loss)	(1,104)				(1,104)	0
Cash dividends paid on company common stock	(41,677)					(41,677)
Issuance of common stock in connection with exercise of stock options (in shares)		465
Issuance of common stock in connection with exercise of stock options	$ 8,995	$ 0	8,995
Issuance of common stock in connection with employee common stock purchase plan (in shares)	77	77
Issuance of common stock in connection with employee common stock purchase plan	$ 1,665	$ 0	1,665
Issuance of restricted stock, net of shares cancelled (in shares)		350
Issuance of restricted stock, net of shares canceled	0	$ 0	0
Repurchases of common stock, common stock shares exchanged		$ (105)
Repurchases of common stock, shares exchanged (in shares)				105
Repurchases of common stock, shares exchanged	(4,047)			$ (4,047)
Repurchases of common stock (in shares)		(3,333)		(3,333)
Repurchases of common stock	(119,235)			$ (119,235)
Stock-based compensation expense	11,517		11,517
Tax effect from employee stock option plan	(668)		(668)
Ending balance (in shares) at Dec. 31, 2015		50,294		8,398
Ending balance at Dec. 31, 2015	$ 515,157	$ 58	$ 599,186	$ (229,513)	$ (1,437)	$ 146,863

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 117,016	$ 170,454	$ (185,555)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation and amortization of property and equipment	1,590	1,834	15,937
Amortization of intangible assets	20,624	18,472	22,330
Stock-based compensation expense	11,517	13,269	13,503
Gain on disposal of property and equipment and other assets, net	0	(19,618)	(8,975)
Impairment of goodwill	0	0	6,664
Non-cash restructuring, impairment of long-lived assets and other charges	0	820	64,716
Deferred income tax and other, net	18,809	(44,042)	22,735
Amortization of premium or discount on investments and other	(2,601)	(144)	3,104
Tax effect from employee stock option plan	(3,107)	(1,968)	0
Employee Service Share-based Compensation, Non-Cash Effect of Tax Benefit from Compensation Expense	(668)	1,968	0
Excess Tax Benefit from Share-based Compensation, Operating Activities	(726)	0	0
Patents acquired through settlement agreements	0	(4,280)	0
Changes in operating assets and liabilities:
Accounts receivable, net	2,694	(1,217)	8,445
Inventories	0	0	1,123
Other assets	(10,051)	5,307	(2,568)
Accounts payable	(2,685)	566	(5,887)
Accrued legal fees	(1,819)	(5,749)	(1,537)
Accrued and other liabilities	(5,074)	(8,568)	1,608
Deferred revenue	(3,412)	9,068	(3,720)
Net cash from operating activities	146,550	134,204	(48,077)
Cash flows from investing activities:
Purchases of property and equipment	(1,002)	(1,769)	(20,111)
Proceeds from sale of property and equipment and other assets	0	31,173	19,708
Purchases of short-term available-for-sale investments	(298,848)	(301,629)	(233,888)
Proceeds from maturities and sales of short-term investments	324,713	203,659	285,598
Acquisition, net of cash acquired	(38,561)	(2,450)	0
Purchases of intangible assets	(7,588)	(5,635)	(3,360)
Net cash from investing activities	(21,286)	(76,651)	47,947
Cash flows from financing activities:
Dividend paid	(41,677)	(48,335)	(37,588)
Excess tax benefit from stock-based compensation	726	0	0
Proceeds from exercise of stock options	8,995	32,581	33,497
Proceeds from employee stock purchase program	1,665	1,700	3,417
Repurchase of common stock	(123,282)	(66,313)	(29,276)
Net cash from financing activities	(153,573)	(80,367)	(29,950)
Net increase (decrease) in cash and cash equivalents	(28,309)	(22,814)	(30,080)
Cash and cash equivalents at beginning of period	50,908	73,722	103,802
Cash and cash equivalents at end of period	22,599	50,908	73,722
Supplemental disclosure of cash flow information:
Income taxes paid, net	36,781	29,053	10,703
Supplemental disclosure of non-cash investing activities:
Property and equipment included in accounts payable and accrued liabilities	$ 0	$ 0	$ 372

The Company And Basis Of Presen

The Company And Basis Of Presentation	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company And Basis Of Presentation	THE COMPANY AND BASIS OF PRESENTATION Tessera Technologies, Inc., including its Invensas, FotoNation and Ziptronix subsidiaries (the "Company"), licenses its technologies and intellectual property to customers for use in areas such as mobile computing and communications, memory and data storage, and 3-D Integrated Circuit (“3D-IC”) technologies, among others. Our technologies include semiconductor packaging and interconnect solutions, including xFD ® , BVA ® , ZiBond ® , and DBI ® , and products and solutions for mobile and computational imaging, including our FaceTools ® , FacePower ® , FotoSavvy ® , DigitalAperture TM , IrisCam ™ , LifeFocus ™ , face beautification, red-eye removal, High Dynamic Range, autofocus, panorama, and image stabilization intellectual property. The consolidated financial statements include the accounts of Tessera Technologies, Inc. and each of its wholly owned subsidiaries. The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States (“U.S.”). All significant intercompany balances and transactions are eliminated in consolidation. The Company’s fiscal year ends on December 31. The Company employs a calendar month-end reporting period for its quarterly reporting. Reclassification Certain reclassifications have been made to prior period balances in order to conform to the current period’s presentation. The most significant of these reclassifications are as follows: • Amortization expense is now shown separately on the Consolidated Statements of Operations. • Certain balance sheet items from 2014 have been grouped together to conform with current periods presented.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The accounting estimates and assumptions that require management’s most significant, difficult, and subjective judgment include the recognition and measurement of current and deferred income tax assets and liabilities, the fair value measurements of investments, the assessment of the recoverability of goodwill, the assessment of useful lives and recoverability of long-lived assets, the assessment of unrecognized tax benefits and the valuation and recognition of stock-based compensation expense, among others. Actual results experienced by the Company may differ from management’s estimates. Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents. Cash and cash equivalents are maintained with various financial institutions. Financial Instruments Investments consist primarily of municipal bonds and notes, corporate bonds and notes, treasury and agency notes and bills, commercial paper, certificates of deposit, and money market funds. Investments with remaining maturities from original purchase date of three months or less are considered to be cash equivalents. Investments with remaining maturities from original purchase date greater than three months are generally classified as available-for-sale, if required, in current operations, and are classified as short-term investments. Investments determined to lack an active market for a period greater than 12 months are classified as available-for-sale and classified as long-term investments. The Company’s cash equivalents and short-term investments are classified as available-for-sale. Unrealized gains and losses on securities, net of tax, are recorded in accumulated other comprehensive income and reported as a separate component of stockholders’ equity. The Company evaluates the investments periodically for possible other-than-temporary impairment and reviews factors such as the length of time and extent to which fair value has been below cost basis, the financial condition of the issuer, the Company’s ability and intent to hold the security until maturity on a more-likely-than-not basis. If the declines in the fair value of the investments are determined to be other-than-temporary, the Company reports the credit loss portion of such decline in other income and expense, net, and the remaining noncredit loss portion in accumulated other comprehensive income. The cost of securities sold is based on the specific identification method. Interest and dividend income and realized gains or losses are included in other income and expense, net. Concentration of credit and other risks Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash equivalents, short-term investments and accounts receivable. The Company follows a corporate investment policy which sets credit, maturity and concentration limits and regularly monitors the composition, market risk and maturities of these investments. The Company believes that any concentration of credit risk in its accounts receivable is substantially mitigated by the Company’s evaluation process, relatively short collection terms and the high level of credit worthiness of its customers. The Company performs ongoing credit evaluations of its customers’ financial condition and limits the amount of credit extended when deemed necessary but generally requires no collateral. At December 31, 2015, the Company had four customers representing 26% , 21% , 13% and 12% of aggregate gross trade receivables. At December 31, 2014, the Company had two customers representing 60% and 11% of aggregate gross trade receivables. The following table sets forth revenues generated from customers which comprise 10% or more of total revenues for the periods indicated: Years Ended December 31, 2015 2014 2013 Samsung Electronics, Co. Ltd. 19 % 24 % 11 % Micron Technology, Inc. 15 % *% *% Amkor Technologies, Inc. 14 % *% *% SK hynix Inc. 13 % 11 % 26 % Powertech Technology Inc. *% 34 % * % Sony Corporation *% *% 18 % * denotes less than 10% of total revenues. Goodwill and identified intangible assets Goodwill . Goodwill is recorded as the difference, if any, between the aggregate consideration paid for an acquisition and the fair value of the net tangible and identified intangible assets acquired under a business combination. The Company reviews impairment of goodwill annually in the fourth quarter. The Company first assesses qualitative factors to determine whether it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. If the Company concludes it is more-likely-than-not that the fair value of a reporting unit exceeds its carrying amount, it need not perform the two-step impairment test. If based on the qualitative assessment, the Company believes it is more-likely-than-not that the fair value of its reporting units is less than its carrying value, a two-step goodwill impairment test is required to be performed. The first step requires the Company to compare the fair value of each reporting unit to its carrying value including allocated goodwill. The Company determines the fair value of its reporting units using an equal weighting of the results derived from an income approach and a market approach. The income approach is estimated through the discounted cash flow method based on assumptions about future conditions such as future revenue growth rates, new product and technology introductions, gross margins, operating expenses, discount rates, future economic and market conditions, and other assumptions. The market approach estimates the fair value of the Company’s equity by utilizing the market comparable method which is based on revenue multiples from comparable companies in similar lines of business. If the carrying value of a reporting unit exceeds the reporting unit’s fair value, the Company performs the second step of the goodwill impairment test to determine the amount of impairment loss. The second step of the goodwill impairment test involves comparing the implied fair value of the reporting unit with the carrying value of the reporting unit. An impairment charge is recognized for the excess of the carrying value of the reporting unit over its implied fair value. Determining the fair value of a reporting unit is subjective in nature and requires the use of significant estimates and assumptions, including revenue growth rates and operating margins, discount rates and future market conditions, among others. Identified intangible assets . Identified intangible assets consist of acquired patents, existing technology, trade names, assembled workforce and non-compete agreements resulting from business combinations, and acquired patents under asset purchase agreements. The Company’s identified intangible assets are amortized on a straight-line basis over their estimated useful lives, ranging from 2 to 15 years . The Company makes judgments about the recoverability of purchased finite-lived intangible assets whenever facts and circumstances indicate that the useful life is shorter than originally estimated or that the carrying amount of assets may not be recoverable. If such facts and circumstances exist, the Company assesses recoverability by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Impairments, if any, are based on the excess of the carrying amount over the fair value of those assets. If the useful life is shorter than originally estimated, the Company would accelerate the rate of amortization and amortize the remaining carrying value over the new shorter useful life. For further discussion of goodwill and identified intangible assets, see “Note 9 – Goodwill and Identified Intangible Assets.” Treasury stock The Company accounts for stock repurchases using the cost method. For reissuance of treasury stock, to the extent that the reissuance price is more than the cost, the excess is recorded as an increase to capital in excess of par value. If the reissuance price is less than the cost, the difference is recorded in capital in excess of par value to the extent there is a cumulative treasury stock paid-in capital balance. Once the cumulative balance is reduced to zero , any remaining difference resulting from the sale of treasury stock below cost is recorded as a reduction of retained earnings. Revenue recognition The Company derives its revenue from royalty and license fees. Revenues are recognized when there is persuasive evidence of an arrangement, delivery has occurred, the fee is fixed or determinable, and collectability of the resulting receivable is reasonably assured. Determining whether and when these criteria have been satisfied requires the Company to make assumptions and judgments which could have a significant impact on the timing and amount of revenues it reports. Royalty revenues are generated from a licensee's production or shipment of licensed products incorporating the Company’s intellectual property, technologies or software. Running royalties are primarily based on unit volumes shipped. Licensees generally report shipment information within 30 to 60 days following the end of the quarter. From time to time the Company also enters into license agreements that provide for fixed license fees or royalty payments. When there is no reliable basis on which the Company can estimate its royalty revenues prior to obtaining these reports from the licensees, the Company recognizes royalty revenues on a one-quarter lag. Royalty revenue also includes payments resulting from periodic compliance audits of licensees, as part of a settlement of a patent infringement dispute, or judgments of license dispute. License revenues are generated from license agreements for certain rights to the Company’s intellectual property technologies. The Company also derives revenue from software licenses for digital and video photography image enhancement technology. In some instances, the Company may enter into license agreements that involve multiple element arrangements to also include technology transfer, design, technical service and unspecified support. For technology and software licenses, revenue is recognized upon delivery or on a straight-line basis over the period in which the unspecified support or service is performed. The Company recognizes revenue from litigation settlements when payments are received which is deemed to be when collectability is reasonably assured. The Company provides payment terms to licensees based upon their financial strength, credit worthiness and the Company’s collection experience with the licensee. If the Company provides extended payment terms, revenue is deferred until payment is due. Indemnification The Company provides indemnification of varying scope to certain customers against claims of intellectual property infringement made by third parties arising from the use of the Company’s technologies. In accordance with authoritative guidance for accounting for guarantees, the Company evaluates estimated losses for such indemnification. The Company considers such factors as the degree of probability of an unfavorable outcome and the ability to make a reasonable estimate of the amount of loss. To date, no such claims have been filed against the Company and, as a result, no liability has been recorded in the Company’s financial statements. As permitted under Delaware law, the Company has agreements whereby it indemnifies its officers and directors for certain events or occurrences while the officer or director is, or was, serving at the Company’s request in such capacity. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has Directors’ and Officers’ Liability insurance coverage that is intended to reduce its financial exposure and may enable the Company to recover a portion of any such payments. The Company believes the estimated fair value of these indemnification agreements in excess of applicable insurance coverage is minimal. Research, development and other related costs Research, development and other related costs consist primarily of compensation and related costs for personnel, as well as costs related to patent applications and examinations, product "tear downs" and reverse engineering, materials, supplies and equipment depreciation. Research and development is conducted primarily in-house and targets development of chip-scale and multi-chip packaging, circuitry design, 3D-IC architectures, wafer-level packaging technology, advanced substrates, and image enhancement technology. All research, development and other related costs are expensed as incurred. Stock-based compensation expense The Company accounts for stock-based compensation expense in accordance with the authoritative guidance on share-based payment. Under the provisions of the guidance, stock-based compensation expense is measured at the grant date based on the fair value of the option using a Black-Scholes option pricing model and is recognized as expense on a straight-line basis over the requisite service period, which is generally the vesting period. The fair value of the Company’s stock awards for non-employees was estimated based on the fair market value on each vesting date, accounted for under the variable-accounting method. The authoritative guidance also requires that the Company measure and recognize stock-based compensation expense upon modification of the term of stock award. The stock-based compensation expense for such modification is the sum of any unamortized expense of the award before modification and the modification expense. The modification expense is the incremental amount of the fair value of the award before the modification and the fair value of the award after the modification, measured on the date of modification. In the case when the modification results in a longer requisite period than in the original award, the Company has elected to apply the pool method where the aggregate of the unamortized expense and the modification expense is amortized over the new requisite period on a straight-line basis. In addition, any forfeiture will be based on the original requisite period prior to the modification. Calculating stock-based compensation expense requires the input of highly subjective assumptions, including the expected term of the stock-based awards, stock price volatility, and the pre-vesting option forfeiture rate. The Company estimates the expected life of options granted based on historical exercise patterns, which are believed to be representative of future behavior. The Company estimates the volatility of the Company’s common stock on the date of grant based on historical volatility. The assumptions used in calculating the fair value of stock-based awards represent the Company’s best estimates, but these estimates involve inherent uncertainties and the application of management judgment. As a result, if factors change and the Company uses different assumptions, its stock-based compensation expense could be materially different in the future. In addition, the Company is required to estimate the expected forfeiture rate and only recognize expense for those shares expected to vest. The Company estimates the forfeiture rate based on historical experience of its stock-based awards that are granted, exercised and cancelled. If the actual forfeiture rate is materially different from the estimate, stock-based compensation expense could be significantly different from what was recorded in the current period. See Note 12 – “Stock-based Compensation Expense” for additional detail. Income taxes The Company must make certain estimates and judgments in determining income tax expense for financial statement purposes. These estimates and judgments occur in the calculation of tax credits, tax benefits, tax deductions, and in the calculation of certain deferred taxes and tax liabilities. Significant changes to these estimates may result in an increase or decrease to the Company’s tax provision in a subsequent period. The provision for income taxes was comprised of the Company’s current tax liability and changes in deferred income tax assets and liabilities. The calculation of the current tax liability involves dealing with uncertainties in the application of complex tax laws and regulations and in determining the liability for tax positions, if any, taken on the Company’s tax returns in accordance with authoritative guidance on accounting for uncertainty in income taxes. Deferred income taxes are determined based on the differences between the financial reporting and tax basis of assets and liabilities. The Company must assess the likelihood that it will be able to recover the Company’s deferred tax assets. If recovery is not likely on a more-likely-than-not basis, the Company must increase its provision for income taxes by recording a valuation allowance against the deferred tax assets that it estimates will not ultimately be recoverable. However, should there be a change in the Company’s ability to recover its deferred tax assets, the provision for income taxes would fluctuate in the period of such change. See Note 13 – “Income Taxes” for additional detail. Contingencies From time to time, the Company may be involved in legal and administrative proceedings and claims of various types. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. Management reviews these estimates in each accounting period as additional information becomes known and adjusts the loss provision when appropriate. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in the consolidated financial statements. If a loss is probable but the amount of loss cannot be reasonably estimated, the Company discloses the loss contingency and an estimate of possible loss or range of loss (unless such an estimate cannot be made). The Company does not recognize gain contingencies until they are realized. Legal costs incurred in connection with loss contingencies are expensed as incurred. See Note 14 – " Commitments and Contingencies ,” for further information regarding the Company’s pending litigation. Property and equipment Property and equipment are recorded at cost and depreciated using the straight-line method over their estimated useful lives. The depreciable lives range from one to five years.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Recently Adopted Accounting Pronouncements In September 2015, the FASB issued ASU No. 2015-16, “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments” (“ASU 2015-16”). The standard requires that adjustments made to provisional amounts recognized in a business combination be recorded in the period such adjustments are determined, rather than retrospectively adjusting previously reported amounts. ASU 2015-16 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, and early adoption is permitted. The adoption of ASU 2015-16 did not have a material effect on the Company’s consolidated financial statements or disclosures. In November 2015, the FASB issued ASU No. 2015-17, “Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”). The FASB issued this ASU as part of its ongoing simplification initiative, with the objective of reducing complexity in accounting standards. The amendments in ASU 2015-17 require entities that present a classified balance sheet to classify all deferred tax liabilities and assets as a noncurrent amount. This guidance does not change the offsetting requirements for deferred tax liabilities and assets, which results in the presentation of one amount on the balance sheet. Additionally, the amendments in this ASU align the deferred income tax presentation with the requirements in International Accounting Standards (IAS) 1, Presentation of Financial Statements. The amendments in ASU 2015-17 are effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted. The Company adopted this guidance prospectively as of December 31, 2015. The adoption of ASU 2015-17 required short-term deferred tax assets be reclassified to long-term deferred tax assets. The adoption did not have any other material effect on the Company’s consolidated financial statements or disclosures. Recent Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers" (“ASU 2014-09”), which provides guidance for revenue recognition. ASU 2014-09 affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” and most industry-specific guidance. This ASU also supersedes some cost guidance included in Subtopic 605-35, “Revenue Recognition-Construction-Type and Production-Type Contracts.” ASU 2014-09’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under today’s guidance, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 is effective for the Company beginning January 1, 2018 and, at that time, the Company may adopt the new standard under the full retrospective approach or the modified retrospective approach. At this time, some of the current guidance impacting the intellectual property licensing industry has not been finalized. Therefore, the Company is still considering how the guidance might affect its financial reporting once finalized. In June 2014, the Financial Accounting Standards Board ("FASB") issued ASU No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (“ASU 2014-12”). The amendments in ASU 2014-12 require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Accounting Standards Codification Topic No. 718, “Compensation - Stock Compensation” (“ASC 718”), as it relates to awards with performance conditions that affect vesting to account for such awards. The amendments in ASU 2014-12 are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Entities may apply the amendments in ASU 2014-12 either: (a) prospectively to all awards granted or modified after the effective date; or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The implementation of this guidance will not have a material impact to the disclosures in the Company’s consolidated financial statements.

Composition Of Certain Financia

Composition Of Certain Financial Statement Captions	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Composition Of Certain Financial Statement Captions	COMPOSITION OF CERTAIN FINANCIAL STATEMENT CAPTIONS Other current assets consisted of the following (in thousands): December 31, 2015 December 31, 2014 Prepaid income taxes $ 22,890 $ 12,841 Interest receivable 2,427 2,138 Other 2,813 2,298 $ 28,130 $ 17,277 Accrued liabilities consisted of the following (in thousands): December 31, 2015 December 31, 2014 Employee compensation and benefits $ 6,848 $ 10,734 Other 3,414 2,550 $ 10,262 $ 13,284 Accumulated other comprehensive loss consisted of the following (in thousands): December 31, 2015 December 31, 2014 Unrealized loss on available-for-sale securities, net of tax $ (1,437 ) $ (333 ) $ (1,437 ) $ (333 )

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Financial Instruments	FINANCIAL INSTRUMENTS The following is a summary of marketable securities at December 31, 2015 and December 31, 2014 (in thousands): December 31, 2015 Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Values Available-for-sale securities Corporate bonds and notes $ 257,461 $ 7 $ (1,286 ) $ 256,182 Municipal bonds and notes 70,772 12 (81 ) 70,703 Commercial paper 5,377 3 — 5,380 Treasury and agency notes and bills 26,973 — (93 ) 26,880 Money market funds 715 — — 715 Total available-for-sale securities $ 361,298 $ 22 $ (1,460 ) $ 359,860 Reported in: Cash and cash equivalents $ 715 Short-term investments 359,145 Total marketable securities $ 359,860 December 31, 2014 Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Values Available-for-sale securities Corporate bonds and notes $ 282,279 $ 13 $ (538 ) $ 281,754 Municipal bonds and notes 37,201 15 (1 ) 37,215 Treasury and agency notes and bills 41,271 10 (13 ) 41,268 Commercial paper 33,774 2 (1 ) 33,775 Money market funds 20,883 — — 20,883 Total available-for-sale securities $ 415,408 $ 40 $ (553 ) $ 414,895 Reported in: Cash and cash equivalents $ 31,382 Short-term investments 383,513 Total marketable securities $ 414,895 At December 31, 2015 and December 31, 2014, the Company had $381.7 million and $434.4 million , respectively, in cash, cash equivalents and short-term investments. The majority of these amounts were held in marketable securities, as shown above. The remaining balance of $21.9 million and $19.5 million at December 31, 2015 and December 31, 2014, respectively, was cash held in operating accounts not included in the tables above. The gross realized gains and losses on sales of marketable securities were not significant during the years ended December 31, 2015, 2014 and 2013. Unrealized losses (net of unrealized gains) of $0.9 million , net of tax, as of December 31, 2015, were related to a temporary decrease in value of the remaining available-for-sale securities and were due primarily to changes in interest rates and market and credit conditions of the underlying securities. Certain investments with a temporary decline in value are not considered to be other-than-temporarily impaired as of December 31, 2015 because the Company has the ability to hold these investments to allow for recovery, and does not anticipate having to sell these securities with unrealized losses and continues to receive interest at the maximum contractual rate. For the years ended December 31, 2015, 2014 and 2013, respectively, the Company did not record any impairment charges related to its marketable securities. The following table summarizes the fair value and gross unrealized losses related to individual available-for-sale securities at December 31, 2015 and 2014, which have been in a continuous unrealized loss position, aggregated by investment category and length of time (in thousands): December 31, 2015 Less Than 12 Months 12 Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate bonds and notes $ 183,491 $ (1,162 ) $ 70,447 $ (124 ) $ 253,938 $ (1,286 ) Municipal bonds and notes 60,976 (81 ) — — 60,976 (81 ) Treasury and agency notes 26,880 (93 ) — — 26,880 (93 ) Total $ 271,347 $ (1,336 ) $ 70,447 $ (124 ) $ 341,794 $ (1,460 ) December 31, 2014 Less Than 12 Months 12 Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate bonds and notes $ 240,165 $ (535 ) $ 5,453 $ (3 ) $ 245,618 $ (538 ) Municipal bonds and notes 1,061 (1 ) — — 1,061 (1 ) Commercial paper 9,482 (1 ) — — 9,482 (1 ) Treasury and agency notes and bills 16,245 (13 ) — — 16,245 (13 ) Total $ 266,953 $ (550 ) $ 5,453 $ (3 ) $ 272,406 $ (553 ) The estimated fair value of marketable securities by contractual maturity at December 31, 2015 is shown below (in thousands). Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations without call or prepayment penalties. Estimated Fair Value Due in one year or less $ 153,396 Due in one to two years 119,693 Due in two to three years 86,771 Total $ 359,860

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	BUSINESS COMBINATIONS Ziptronix On August 27, 2015, the Company completed its acquisition of Ziptronix, Inc. (“Ziptronix”) for approximately $39 million in cash, net of $1.5 million in working capital (which includes $1.9 million in cash) acquired. Approximately $0.7 million of the consideration was withheld until certain employees complete the term of their employment obligations. The acquisition expands the Company's existing advanced packaging capabilities by adding a low-temperature wafer bonding technology platform that will accelerate delivery of 2.5D and 3D-IC solutions to semiconductor industry customers. Ziptronix’s patented ZiBond® direct bonding and DBI® hybrid bonding technologies deliver scalable, low total cost-of-ownership manufacturing solutions for 3D stacking. Ziptronix’s intellectual property has been licensed to Sony Corporation for volume production of CMOS image sensors. Ziptronix’s technology is also relevant to next-generation stacked memory, 2.5D FPGAs, RF Front-End and MEMS devices, among other semiconductor applications. The significant future market opportunity for the Company to own Ziptronix contributed to a purchase price in excess of the fair value of the underlying net assets and identified intangible assets acquired from Ziptronix and, as a result, the Company has recorded goodwill in connection with this transaction. The business combination transaction was accounted for using the acquisition method of accounting. Purchase price allocation In accordance with the accounting guidance on business combinations, the total purchase price is allocated to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. Based upon the fair values acquired, the purchase price allocation is as follows (unaudited, in thousands): Amount Estimated Useful Life (Years) Net tangible assets and liabilities: Unbilled contract asset $ 3,380 Deferred tax assets and liabilities, net (7,671 ) (1 ) Other accrued liabilities (385 ) $ (4,676 ) Identified intangible assets: Patents/existing technology $ 32,300 5-8 Trade name 1,300 8 Customer relationships 1,600 2 Goodwill 8,037 (2) N/A $ 43,237 Total purchase price $ 38,561 (1) The $7.7 million of deferred tax assets and liabilities, net is the anticipated tax effect from the amortization of identified intangible assets acquired, net of tax benefits from operating losses the Company expects to utilize. (2) The Company does not anticipate that any of this goodwill will be deductible for tax purposes. The amounts of revenue and earnings that would have been included in the Company’s condensed consolidated statement of operations for the year ended December 31, 2015 for the combined entity had the acquisition date been January 1, 2014, are as follows (unaudited, in thousands): Revenue Earnings Actual for the year ended December 31, 2014 $ 278,807 $ 170,454 Actual for the year ended December 31, 2015 $ 273,300 $ 117,016 Supplemental pro forma for the year ended December 31, 2014 (unaudited) $ 282,637 $ 167,165 (1) Supplemental pro forma for the year ended December 31, 2015 (unaudited) $ 304,615 (3) $ 137,595 (1) (2) (3) (1) Includes $5.6 million in pre-tax amortization costs related to the intangible assets acquired. (2) Excludes $3.1 million in acquisition related costs, primarily financial advisor fees and contract settlement costs incurred by Ziptronix in connection with the acquisition. (3) Almost all of the revenue and earnings related to Ziptronix in this period is the result of one -time license fee payments during the three months ended March 31, 2015 (unaudited).

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE The Company follows the authoritative guidance fair value measurement and the fair value option for financial assets and financial liabilities. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability, or an exit price, in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The established fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value: Level 1 Quoted prices in active markets for identical assets. Level 2 Observable market-based inputs or unobservable inputs that are corroborated by market data. Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. When applying fair value principles in the valuation of assets, we are required to maximize the use of quoted market prices and minimize the use of unobservable inputs. We calculate the fair value of our Level 1 and Level 2 instruments based on the exchange traded price of similar or identical instruments, where available, or based on other observable inputs. There were no significant transfers into or out of Level 1 or Level 2 that occurred between December 31, 2014 and December 31, 2015. The following is a list of the Company’s assets required to be measured at fair value on a recurring basis and where they were classified within the hierarchy as of December 31, 2015 (in thousands): Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Marketable securities Money market funds (1) $ 715 $ 715 $ — $ — Corporate bonds and notes (2) 256,182 — 256,182 — Municipal bonds and notes (2) 70,703 — 70,703 — Treasury and agency notes and bills (2) 26,880 — 26,880 — Commercial paper (2) 5,380 — 5,380 — Total Assets $ 359,860 $ 715 $ 359,145 $ — The following footnotes indicate where the noted items were recorded in the Consolidated Balance Sheet at December 31, 2015: (1) Reported as cash and cash equivalents. (2) Reported as short-term investments. The following is a list of the Company’s assets required to be measured at fair value on a recurring basis and where they were classified within the hierarchy as of December 31, 2014 (in thousands): Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Marketable securities Money market funds (1) $ 20,883 $ 20,883 $ — $ — Corporate bonds and notes (2) 281,754 — 281,754 — Municipal bonds and notes (2) 37,215 — 37,215 — Treasury and agency notes and bills (2) 41,268 — 41,268 — Commercial paper (3) 33,775 — 33,775 — Total Assets $ 414,895 $ 20,883 $ 394,012 $ — The following footnotes indicate where the noted items were recorded in the Consolidated Balance Sheet at December 31, 2014: (1) Reported as cash and cash equivalents. (2) Reported as short-term investments. (3) Reported as either cash and cash equivalents or short-term investments. Non-Recurring Fair Value Measurements The following table represents the activity in level 3 assets (in thousands): Assets held for sale Assets included in discontinued operations and held for sale Other Balance at December 31, 2013 $ — $ 9,720 (1 ) $ — Assets transferred — 1,398 — Assets sold — (11,118 ) (2 ) — Assets received — — 4,280 Balance at December 31, 2014 $ — $ — $ 4,280 Assets transferred — — — Assets sold — — — Assets received — — — Balance at December 31, 2015 $ — $ — $ 4,280 (3 ) (1) Comprised of assets remaining after the sale of the Micro-Optics business located in Charlotte, North Carolina, which was completed in August 2013 and assets remaining as a result of the cessation of the Company's mems|cam manufacturing activities. See Note 6 - " Discontinued Operations " for more information. These assets are carried at market value as determined by specific third party quotes. (2) The assets in footnote 1 above were sold in 2014. These assets sold for $17.1 million in the aggregate and resulted in a gain of $5.8 million . (3) This amount represents the value of the patents that were received as part of licensing settlements with customers. These assets were valued using a methodology based on an arms-length purchase price of bulk patent assets, with adjustments based on limited pick rights, the total available market, and remaining average patent life. The value above is gross and the accumulated amortization to date is $1.0 million .

Business Combinations Business

Business Combinations Business Combinations	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure	DISCONTINUED OPERATIONS The following are included in the Company's discontinued operations: • In 2013, the Company continued to restructure its DigitalOptics business through the sale of its Micro-Optics business based in Charlotte, North Carolina. Originally purchased in 2006, this business focused on diffractive optical elements, refractive optical elements, and integrated micro-optic sub-assemblies. The Company determined these offerings were no longer part of its long-term strategy for the DigitalOptics business. As a result, on August 9, 2013, the Company sold all of the related assets of the Micro-Optics business, except the land and building, to a buyer in exchange for $14.9 million in cash which resulted in a disposal gain of $8.7 million , and is included in the net loss from discontinued operations. The land and building assets were classified as assets held for sale until they were sold in August 2014. • In 2014, the Company announced a restructuring of its DigitalOptics segment to cease all remaining manufacturing operations resulting in the impairment charges related to the Company's long-lived assets. For the year ended December 31, 2013, the Company incurred cumulative charges, which include continuing and discontinued operations in total, of $5.9 million in severance and $70.9 million in impairment of long-lived assets and other charges. • In 2014, the Company announced the cessation of all mems|cam manufacturing operations. As part of these efforts, the Company is no longer operating facilities in Arcadia, California, Rochester, New York, Hsinchu, Taiwan and Japan. As a result of these actions, certain assets were impaired or were written off entirely and restructuring and other charges were taken in 2013. All material assets of these operations were sold or licensed to a third party in December 2014 generating a gain of $7.6 million which is included in discontinued operations. For more information regarding these actions, see Note 9 - " Goodwill and Identified Intangible Assets" and Note 16 - "Restructuring, Impairment of Long-Lived Assets and Other Charges and Gain on Sale of Patents." The businesses discussed above are considered discontinued operations, and accordingly, the Company has reported the results of operations and financial position of these businesses in discontinued operations within all statements of operations presented and the current balance sheet. The results from discontinued operations were as follows (in thousands): Years Ended December 31, 2015 2014 2013 Revenues: Product and service revenues $ — $ 32 $ 6,524 Total revenues — 32 6,524 Operating expenses: Cost of revenues — 21 12,276 Research, development and other related costs — 6,190 60,117 Selling, general and administrative 389 6,254 11,833 Restructuring, impairment of long-lived assets and other charges and gain on sale of patents (371 ) (3,178 ) (1 ) 72,280 (2 ) Impairment of goodwill — — 6,548 (3 ) Total operating expenses 18 9,287 163,054 Other income and (expense), net — 629 572 Operating loss before taxes (18 ) (8,626 ) (155,958 ) Expense (benefit) from income taxes 83 (4,137 ) (11,312 ) Net loss from discontinued operations $ (101 ) $ (4,489 ) $ (144,646 ) (1) As noted above, the Company has undergone significant restructuring activities in 2014. The majority of restructuring, impairment and other charges occurred during 2013. In 2014, the company sold assets and the proceeds are netted against expenses. (2) As noted above, the Company has undergone restructuring activities in 2013. The majority of restructuring, impairment and other charges occurred during 2013. In 2013, the Company incurred $45.0 million in the impairment of fixed assets which primarily consisted of manufacturing equipment used in both the Zhuhai and Taiwan facilities, $16.6 million in the impairment of intangible assets which included the Eyesquad and Siimpel portfolios and $4.7 million of severance costs due to the related reductions in force. (3) See Note 9 – "Goodwill and Identified Intangible Assets." The current assets and current liabilities of discontinued operations were as follows (in thousands): December 31, December 31, Accounts receivable and other assets, net $ — $ 390 Property and equipment, net — — Total assets of discontinued operations $ — $ 390 Accrued liabilities (1) $ — $ 2,873 Total liabilities of discontinued operations $ — $ 2,873 (1) The December 31, 2014 balances relate to the cessation of all mems|cam manufacturing operations. This amount included lease obligations and employee severance which were settled in cash in the first half of 2015. This amount is included in "Other current liabilities" on the condensed consolidated balance sheet.

Goodwill And Identified Intangi

Goodwill And Identified Intangible Assets	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill And Identified Intangible Assets	GOODWILL AND IDENTIFIED INTANGIBLE ASSETS In March 2013, the Company revised its business strategy for the DigitalOptics business to concentrate its manufacturing efforts on the lens barrel, rather than the whole camera module. This revised strategy made the Zhuhai Facility unnecessary. The Company announced the closure of the Zhuhai Facility in March 2013. This decision triggered an impairment review of the related goodwill and purchased intangible assets. As a result of the Company's impairment assessment, completed in the first quarter of 2013, the Company recorded an impairment charge to goodwill of $6.7 million . In 2015, the Company assessed goodwill impairment for its reporting unit. As of September 30, 2015, the Company assessed goodwill impairment for its reporting unit by performing a qualitative assessment and no impairment of goodwill was indicated as the Company concluded that it was more likely than not that the fair value of its reporting unit exceeded its carrying amount. In addition, there have been no significant events or circumstances affecting the valuation of goodwill subsequent to the qualitative assessment performed in the fourth quarter of the year ended December 31, 2015. The changes to the carrying value of goodwill from January 1, 2014 through December 31, 2015 are reflected below (in thousands): December 31, 2013 $ — Goodwill acquired 2,099 December 31, 2014 $ 2,099 Goodwill acquired through the acquisition of Ziptronix, Inc. (1) 8,037 December 31, 2015 $ 10,136 (2) (1) For more information regarding this transaction, see Note 8 - "Business Combinations." (2) This amount is included in "Other assets" on the consolidated balance sheet. Identified intangible assets consisted of the following (in thousands): December 31, 2015 December 31, 2014 Average Life (Years) Gross Assets Accumulated Amortization Net Gross Assets Accumulated Amortization Net Acquired patents / core technology (1) 3-15 $ 140,345 $ (79,128 ) $ 61,217 $ 132,157 $ (62,053 ) $ 70,104 Existing technology (2) 5-10 50,620 (20,182 ) 30,438 18,700 (17,932 ) 768 Customer contracts 3-9 10,200 (7,792 ) 2,408 8,600 (6,569 ) 2,031 Trade name 4-10 1,600 (574 ) 1,026 520 (498 ) 22 $ 202,765 $ (107,676 ) $ 95,089 $ 159,977 $ (87,052 ) $ 72,925 (1) In 2014, $5.9 million in patents were purchased and $4.3 million in patents were received through litigation settlements. (2) In 2015, $31.7 million of existing technology was acquired through our acquisition of Ziptronix. For more information regarding this existing technology, see Note 8 - " Business Combinations ." Amortization expense for the years ended December 31, 2015, 2014, and 2013 amounted to $20.6 million , $18.5 million and $19.3 million , respectively. As of December 31, 2015, the estimated future amortization expense of intangible assets is as follows (in thousands): 2016 $ 23,570 2017 21,029 2018 18,713 2019 10,279 2020 6,133 Thereafter 15,365 $ 95,089

Net Income (Loss) Per Share

Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	NET INCOME (LOSS) PER SHARE The Company has a share-based compensation plan under which employees may be granted share-based awards including shares of restricted stock and restricted stock units ("RSUs"). Non-forfeitable dividends are paid on unvested shares of restricted stock. No dividends are accrued or paid on unvested RSUs. As such, shares of restricted stock are considered participating securities under the two-class method of calculating earnings per share. The two-class method of calculating earnings per share did not have a material impact on the Company’s earnings per share calculation as of December 31, 2015, 2014 and 2013. The following table sets forth the computation of basic and diluted shares (in thousands): Years Ended December 31, 2015 2014 2013 Weighted average common shares outstanding 51,841 52,898 53,431 Unvested common shares subject to repurchase (39 ) (79 ) (85 ) Total common shares-basic 51,802 52,819 53,346 Effect of dilutive securities: Stock awards 343 346 — Restricted stock awards and units 441 398 — Total common shares-diluted 52,586 53,563 53,346 Basic net income (loss) per share is computed using the weighted average number of common shares outstanding during the period, excluding any unvested restricted stock awards that are subject to repurchase. Diluted net income (loss) per share is computed using the treasury stock method to calculate the weighted average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential dilutive common shares include unvested restricted stock awards and units and incremental common shares issuable upon the exercise of stock options, less shares from assumed proceeds. The assumed proceeds calculation includes actual proceeds to be received from the employee upon exercise, the average unrecognized stock compensation cost during the period and any tax benefits that will be credited upon exercise to additional paid-in capital. For the years ended December 31, 2015, 2014 and 2013 in the calculation of net income (loss) per share, 0.1 million , 1.5 million and 2.8 million shares, respectively, subject to stock options and restricted stock awards and units were excluded from the computation of diluted net income (loss) per share as they were anti-dilutive.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stockholders' Equity	STOCKHOLDERS’ EQUITY Stock Repurchase Programs In August 2007, the Company’s Board of Directors (“the Board”) authorized a plan to repurchase the Company’s outstanding shares of common stock dependent on market conditions, share price and other factors. As of December 31, 2015, the total amount authorized for repurchases is $250.0 million . As of December 31, 2015, the Company had repurchased a total of approximately 8,234,000 shares of common stock, since inception of the plan, at an average price of $27.22 per share for a total cost of $224.1 million . As of December 31, 2014, the Company had repurchased a total of approximately 4,901,000 shares of common stock, since inception of the plan, at an average price of $21.39 per share for a total cost of $104.9 million . The shares repurchased are recorded as treasury stock and are accounted for under the cost method. No expiration date has been specified for this plan. As of December 31, 2015, the total amount available for repurchase was $25.9 million . The Company plans to continue to execute authorized repurchases from time to time under the plan. Stock Option Plans The 2003 Plan In February 2003, the Board adopted and the Company’s stockholders approved the 2003 Equity Incentive Plan (“2003 Plan”). Under the 2003 Plan, incentive stock options may be granted to the Company’s employees at an exercise price of no less than 100% of the fair value on the date of grant, and non-statutory stock options may be granted to the Company’s employees, non-employee directors and consultants at an exercise price of no less than 85% of the fair value. In both cases, when the optionees own stock representing more than 10% of the voting power of all classes of stock of the Company, the exercise price shall be no less than 110% of the fair value on the date of grant. Options, restricted stock awards, and restricted stock units granted under this plan generally have a term of ten years from the date of grant and vest over a four -year period. Restricted stock, performance awards, dividend equivalents, deferred stock, stock payments and stock appreciation rights may also be granted under the 2003 Plan either alone, in addition to, or in tandem with any options granted thereunder. Restricted stock awards and units are full-value awards that reduce the number of shares reserved for grant under this plan by one and one-half shares for each share granted. The vesting criteria for restricted stock awards and units is generally the passage of time or meeting certain performance-based objectives, and continued employment through the vesting period generally over four years. As of December 31, 2015, there were approximately 3.9 million shares reserved for future grant under this plan. A summary of the stock option activity is presented below (in thousands, except per share amounts): Options Outstanding Number of Shares Subject to Options Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (in years) Aggregate Intrinsic Value Balance at December 31, 2012 7,099 $17.80 Options granted 1,204 $19.00 Options exercised (2,031 ) $16.51 Options canceled / forfeited / expired (2,355 ) $18.59 Balance at December 31, 2013 3,917 $18.37 Options granted 220 $22.29 Options exercised (1,797 ) $18.13 Options canceled / forfeited / expired (724 ) $18.00 Balance at December 31, 2014 1,616 $19.34 Options granted 84 $36.60 Options exercised (465 ) $19.35 Options canceled / forfeited / expired (93 ) $19.04 Balance at December 31, 2015 1,142 $20.63 7.39 $ 11,369 Vested and expected to vest at December 31, 2015 1,040 7.30 $ 10,559 Exercisable at December 31, 2015 502 6.52 $ 5,603 The following table summarizes information about stock options outstanding and exercisable under all of the Company’s plans at December 31, 2015: Options Outstanding Options Exercisable Range of Exercise Prices per Share Number Outstanding (in thousands) Weighted Average Remaining Contractual Life (in years) Weighted Average Exercise Price per Share Number Exercisable (in thousands) Weighted Average Exercise Price per Share $12.52 - $14.91 137 6.07 $ 14.10 100 $ 13.92 $15.35 - $18.74 73 6.31 $ 16.90 43 $ 17.03 $18.84 - $18.84 367 7.94 $ 18.84 148 $ 18.84 $18.89 - $19.08 118 7.71 $ 19.02 73 $ 19.04 $19.33 - $20.01 68 6.94 $ 19.68 29 $ 19.61 $20.43 - $20.43 134 7.47 $ 20.43 47 $ 20.43 $20.63 - $26.34 128 7.19 $ 23.50 40 $ 24.44 $28.20 - $44.27 117 7.93 $ 35.27 24 $ 33.03 $12.52 - $44.27 1,142 7.39 $ 20.63 502 $ 19.04 Restricted Stock Awards and Units Information with respect to outstanding restricted stock awards and units as of December 31, 2015 is as follows (in thousands, except per share amounts): Restricted Stock and Restricted Stock Units Number of Shares Subject to Time- based Vesting Number of Shares Subject to Performance- based Vesting Total Number of Shares Weighted Average Grant Date Fair Value Per Share Balance at December 31, 2012 715 116 831 $ 16.36 Awards and units granted 596 358 954 $ 19.26 Awards and units vested / earned (262 ) (27 ) (289 ) $ 17.45 Awards and units canceled / forfeited (312 ) (99 ) (411 ) $ 16.77 Balance at December 31, 2013 737 348 1,085 $ 18.46 Awards and units granted 222 309 531 $ 22.41 Awards and units vested / earned (289 ) — (289 ) $ 18.85 Awards and units canceled / forfeited (168 ) (24 ) (192 ) $ 17.91 Balance at December 31, 2014 502 633 1,135 $ 20.30 Awards and units granted 472 90 562 $ 39.77 Awards and units vested / earned (240 ) (144 ) (384 ) $ 20.17 Awards and units canceled / forfeited (44 ) (60 ) (104 ) $ 21.54 Balance at December 31, 2015 690 519 1,209 $ 29.28 Performance Awards and Units Performance awards and units may be granted to employees or consultants based upon, among other things, the contributions, responsibilities and other compensation of the particular employee or consultant. The value and the vesting of such performance awards and units are generally linked to one or more performance goals or other specific performance goals determined by the Company, in each case on a specified date or dates or over any period or periods determined by the Company, and range from zero to 100 percent of the grant. Employee Stock Purchase Plans In August 2003, the Board adopted the 2003 Employee Stock Purchase Plan (the "ESPP"), which was approved by the Company’s stockholders in September 2003 and became effective February 1, 2004. Subsequently, the Board adopted the International Employee Stock Purchase Plan (the “International ESPP”) in June 2008. The ESPP has a series of consecutive, overlapping 24-month offering periods. The first offering period commenced February 1, 2004, the effective date of the ESPP, as determined by the Board of Directors. Individuals who own less than 5% of the Company’s voting stock, are scheduled to work more than 20 hours per week and whose customary employment is for more than five months in any calendar year may join an offering period on the first day of the offering period or the beginning of any semi-annual purchase period within that period. Individuals who become eligible employees after the start date of an offering period may join the ESPP at the beginning of any subsequent semi-annual purchase period. Participants may contribute up to 20% of their cash earnings through payroll deductions, and the accumulated deductions will apply to the purchase of shares on each semi-annual purchase date. The purchase price per share will equal 85% of the fair market value per share on the participant’s entry date into the offering period or, if lower, 85% of the fair market value per share on the semi-annual purchase date. An eligible employee’s right to buy the Company’s common stock under the ESPP may not accrue at a rate in excess of $25,000 of the fair market value of such shares per calendar year for each calendar year of an offering period. If the fair market value per share of the Company’s common stock on any purchase date is less than the fair market value per share on the start date of the 24 -month offering period, then that offering period will automatically terminate and a new 24 -month offering period will begin on the next business day. All participants in the terminated offering will be transferred to the new offering period. As of December 31, 2015, there were approximately 496,440 shares reserved for grant under the ESPP and the International ESPP, collectively. Dividends Stockholders of the Company’s common stock are entitled to receive dividends when declared by the Company’s Board of Directors. The Company began paying a $0.10 quarterly dividend in the second quarter of 2012 and also paid special dividends in 2013 and 2014. In February 2015, the Company updated its capital allocation strategy. Given the change in business approach that moves us away from backward looking “episodic” payments, the Company discontinued the once-a-year payment of special dividends on episodic proceeds and instead doubled the quarterly dividend to $0.20 per share effective in March 2015. Dividends declared were $0.80 , $0.92 and $0.70 per common share in 2015, 2014 and 2013, respectively.

Stock-Based Compensation Expens

Stock-Based Compensation Expense	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation Expense	STOCK-BASED COMPENSATION EXPENSE The effect of recording stock-based compensation expense for the years ended December 31, 2015, 2014 and 2013 is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Cost of revenues $ — $ 18 $ 50 Research, development and other related costs 4,005 2,823 3,591 Selling, general and administrative 7,512 10,428 9,862 Total stock-based compensation expense 11,517 13,269 13,503 Tax effect on stock-based compensation expense (3,107 ) (1,968 ) — Net effect on net income (loss) $ 8,410 $ 11,301 $ 13,503 Stock-based compensation expense categorized by various equity components for the years ended December 31, 2015, 2014 and 2013 is summarized in the table below (in thousands): Years Ended December 31, 2015 2014 2013 Employee stock options $ 2,676 $ 3,336 $ 7,815 Restricted stock awards and units 8,232 9,322 4,317 Employee stock purchase plan 609 611 1,371 Total stock-based compensation expense $ 11,517 $ 13,269 $ 13,503 During the years ended December 31, 2015, 2014 and 2013, the Company granted stock options covering 84,000 , 220,000 and 1,204,000 shares, respectively. The 2015, 2014 and 2013 estimated per share fair value of those grants was $8.57 , $5.71 and $6.82 , respectively, before estimated forfeitures. The total fair value of restricted stock awards vested during the years ended December 31, 2015, 2014 and 2013 was $7.7 million , $5.5 million and $5.0 million , respectively. The total intrinsic value of options exercised during the years ended December 31, 2015, 2014 and 2013 was $9.3 million , $13.3 million and $6.8 million , respectively. The intrinsic value is calculated as the difference between the market value on the date of exercise and the exercise price of the shares. As of December 31, 2015, the unrecognized stock-based compensation balance after estimated forfeitures related to unvested stock options was $3.0 million to be recognized over an estimated weighted average amortization period of 2.0 years and $11.1 million related to restricted stock awards and units, including performance-based awards and units, to be recognized over an estimated weighted average amortization period of 2.2 years . As of December 31, 2014, the unrecognized stock-based compensation balance after estimated forfeitures related to unvested stock options was $5.0 million to be recognized over an estimated weighted average amortization period of 2.6 years and $5.4 million related to restricted stock awards and units, including performance-based awards and units, to be recognized over an estimated weighted average amortization period of 2.0 years . The Company uses the Black-Scholes option pricing model to determine the estimated fair value of options. The fair value of each option grant is determined on the date of grant and the expense is recorded on a straight-line basis. The assumptions used in the model include expected life, volatility, risk-free interest rate, and dividend yield. The Company’s determinations of these assumptions are outlined below. Expected life – The expected life assumption is based on analysis of the Company’s historical employee exercise patterns. The expected life of options granted under the ESPP represents the offering period of two years. Volatility – Volatility is calculated using the historical volatility of the Company’s common stock for a term consistent with the expected life. Historical volatility of the Company’s common stock is also utilized for the ESPP. Risk-free interest rate – The risk-free interest rate assumption is based on the U.S. Treasury rate for issues with remaining terms similar to the expected life of the options. Dividend yield – Expected dividend yield is calculated based on cash dividends declared by the Board for the previous four quarters and dividing that result by the average closing price of the Company’s common stock for the quarter. Cash dividends are not paid on options, restricted stock units or unvested restricted stock awards. In addition, the Company estimates forfeiture rates. Forfeitures are estimated at the time of grant and revised in subsequent periods if actual forfeitures differ from those estimates. Historical data is used to estimate pre-vesting option forfeitures and record stock-based compensation expense only for those awards that are expected to vest. The following assumptions were used to value the options granted: Years Ended December 31, 2015 2014 2013 Expected life (in years) 3.8 4.9 5.0 Risk-free interest rate 1.1 - 1.4% 1.6 - 1.8% 0.8 - 1.8% Dividend yield 2.1 - 2.9% 3.4 - 4.1% 2.1 - 3.8% Expected volatility 34.0 - 35.6% 37.3 - 41.4% 44.2 - 59.5% The following assumptions were used to value the ESPP shares: Years Ended December 31, 2015 2014 2013 Expected life (years) 2.0 2.0 2.0 Risk-free interest rate 0.4 - 0.7% 0.3 - 0.5% 0.3 - 0.4% Dividend yield 2.1 - 3.4% 3.4 - 3.5% 2.3 - 3.8% Expected volatility 29.7 - 30.0% 27.6 - 30.6% 38.9 - 40.6% For the years ended December 31, 2015, 2014 and 2013, an aggregate of 77,000 , 137,000 and 288,000 common shares, respectively, were purchased pursuant to the ESPP. Modifications From time to time, the Company enters into consulting agreements with its departing employees. Some of these agreements may include continued vesting of the departing employees’ stock awards and an extension of the exercise period from the standard 90 days from employment termination date to the termination of the consulting agreement. As a result of modifications related to former employees, the Company incurred stock-based compensation expense of $0.3 million , $(0.3) million , and $3.0 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The components of total income (loss) before taxes from continuing operations are as follows (in thousands): Years ended December 31, 2015 2014 2013 U.S. $ 151,862 $ 155,757 $ (36,096 ) Foreign 13,772 11,489 31,047 Total income (loss) before taxes from continuing operations $ 165,634 $ 167,246 $ (5,049 ) The provision for (benefit from) income taxes consisted of the following (in thousands): Years ended December 31, 2015 2014 2013 Current: U.S. federal $ 2,737 $ (797 ) $ (4,350 ) Foreign 26,275 31,824 14,967 State and local 319 8 8 Total current 29,331 31,035 10,625 Deferred: U.S. federal 23,478 (38,732 ) 25,235 Foreign (4,138 ) — — State and local (154 ) — — Total deferred 19,186 (38,732 ) 25,235 Provision for (benefit from) income taxes $ 48,517 $ (7,697 ) $ 35,860 Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts for income tax purposes. Significant components of the company’s deferred tax assets and liabilities are as follows (in thousands): December 31, 2015 2014 Deferred tax assets Net operating loss carryforwards $ 15,268 $ 15,053 Research tax credit 5,438 8,332 Foreign tax credit 5,587 22,885 Expenses not currently deductible 12,453 15,096 Basis difference in fixed and intangible assets 4,227 7,090 Gross deferred tax assets 42,973 68,456 Valuation allowance (13,852 ) (27,087 ) Net deferred tax assets 29,121 41,369 Deferred tax liabilities Acquired intangible assets, foreign (13,597 ) (276 ) Unremitted earnings of foreign subsidiaries (130 ) (187 ) Net deferred tax assets $ 15,394 $ 40,906 At December 31, 2015 and 2014, the Company had a valuation allowance of $13.9 million and $27.1 million , respectively, related to federal, state, and foreign tax attributes that the Company believes to be not realizable on a more-likely-than-not basis. The decrease of $13.2 million was due to a valuation allowance that was released against certain deferred tax assets, primarily consisting of Ireland deferred tax assets, as the Company concluded such assets were realizable. The need for a valuation allowance requires an assessment of both positive and negative evidence when determining whether it is more likely than not that deferred tax assets are recoverable. Such assessment is required on a jurisdiction-by-jurisdiction basis. In making such assessment, significant weight is given to evidence that can be objectively verified. After considering both negative and positive evidence to assess the recoverability of the Company's net deferred tax assets during the 2015 year, the Company determined that it was more likely than not that it would realize certain deferred tax assets given current certainties regarding the timing of profits and forecasted future profitability within the Ireland tax jurisdiction. The Company will continue to monitor the likelihood that it will be able to recover the deferred tax assets in the future, including those for which a valuation allowance is still recorded. This determination includes objectively verifiable positive evidence that outweighs potential negative evidence. A reconciliation of the statutory U.S. federal income tax rate to the Company’s effective tax rate is as follows: Years Ended December 31, 2015 2014 2013 U.S. federal statutory rate 35.0 % 35.0 % (35.0 )% State, net of federal benefit — — 0.1 Stock-based compensation expense 0.5 0.3 4.0 Tax exempt interest (0.1 ) — (2.6 ) Research tax credit and other (0.3 ) (0.3 ) (11.2 ) Foreign withholding tax 15.7 18.8 292.5 Foreign losses not benefited — — (32.8 ) Foreign tax rate differential (2.8 ) (2.2 ) (7.4 ) Foreign tax credit (15.3 ) (17.9 ) — Change in valuation allowance (3.0 ) (38.7 ) 491.1 Others (0.4 ) 0.4 11.5 Total 29.3 % (4.6 )% 710.2 % As of December 31, 2015, the Company had federal net operating loss carryforwards of approximately $15.0 million and state net operating loss carryforwards of approximately $64.8 million. The federal net operating loss carryforwards are carried over from Ziptronix, Inc., acquired in 2015. The state net operating loss carryforwards are carried over from acquired entities, Siimpel Corporation in 2010 and Ziptronix, Inc. in 2015. These operating loss carryforwards, if not utilized, will begin to expire on various dates beginning in 2016, and will continue to expire through 2031. In addition, the Company has research tax credit carryforwards of approximately $0.3 million for federal purposes, which were carried over from Ziptronix, Inc. The federal research tax credit will start to expire in 2020, and will continue to expire through 2033. The Company also has research tax credit carryforwards of approximately $5.4 million for state purposes and $1.3 million for foreign purposes, which under current law will not expire. The Company has $5.6 million of foreign tax credit carryforwards which will expire in 2023. Under the provisions of the Internal Revenue Code, substantial changes in the Company or its subsidiaries' ownership may limit the amount of net operating loss and research tax credit carryforwards that can be utilized annually in the future to offset taxable income. In 2015, the Company reduced the California net operating loss carryforwards by $45.0 million resulting from the Gillette Co. vs. Franchise Tax Board court case that was concluded by the California Supreme Court on December 31, 2015. The California Supreme Court concluded that the Multistate Tax Compact’s three factor equal weighted formula apportionment method was an improper method, and the single sales factor method enacted in 2011 was held to be the proper method to apportion income to California. Accordingly, the Company reduced its California net operating loss carryforward to reflect the California Supreme Court decision. This reduction of California net operating loss carryforwards does not impact the Company’s Consolidated Balance Sheet or Consolidated Statement of Operations. The Company plans to permanently reinvest the unremitted earnings of its non-U.S. subsidiaries except for the Company's Israel subsidiary where the closure of this subsidiary is imminent following the Company's announcement to restructure its DigitalOptics business and cease its MEMS manufacturing operations. The Company has accrued a deferred tax liability of $0.1 million for the withholding taxes that would arise on the distribution of the Israel subsidiary's earnings. As of December 31, 2015, unrecognized tax benefits approximated $3.1 million , (which is included in other long-term liabilities on the Consolidated Balance Sheet), of which $2.4 million would affect the effective tax rate if recognized. As of December 31, 2014, unrecognized tax benefits approximated $2.7 million , of which $1.1 million would affect the effective tax rate if recognized. As of December 31, 2015, it is reasonably possible that unrecognized tax benefits may decrease by $0.2 million in the next 12 months due to the expected lapse of statute of limitation relating to foreign tax incentives. The reconciliation of the Company's unrecognized tax benefits for the years ended December 31, 2015, 2014 and 2013 is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Total unrecognized tax benefits at January 1 $ 2,734 $ 5,031 $ 4,831 Gross increases and decreases due to tax positions taken in prior periods 699 (193 ) 18 Gross increases and decreases due to tax positions taken in the current period 103 150 290 Gross increases and decreases due to settlements with taxing authorities — (2,023 ) (87 ) Gross increases and decreases due to lapses in applicable statutes of limitations (465 ) (231 ) (21 ) Total unrecognized tax benefits at December 31 $ 3,071 $ 2,734 $ 5,031 It is the Company's policy to classify accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes. For the years ended December 31, 2015, 2014, and 2013, the Company recognized an insignificant amount of interest and penalties related to unrecognized tax benefits. For the years ended December 31, 2015 and 2014, the Company accrued $0.5 million and $0.5 million , respectively, of interest and penalties related to unrecognized tax benefits. At December 31, 2015, the Company’s 2010 through 2015 tax years were open and subject to potential examination in one or more jurisdictions. In addition, in the U.S., any net operating losses or credits that were generated in prior years but utilized in an open year may also be subject to examination. The Company recently completed an Internal Revenue Service examination related to its 2008 and 2009 tax returns which resulted in minimal changes to the statement of operations. The audit was settled last year but the Company is currently disputing the interest calculation for the audit assessment amount. The Company is currently under an Internal Revenue Service examination for the 2010 - 2013 tax years. The Company also is currently under examination in California for the 2011 and 2012 tax years. The Company cannot estimate the financial outcome of the Internal Revenue Service and California examinations. The Company is not currently under foreign income tax examination.

Commitments And Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Lease and Purchase Commitments The Company leases office and research facilities and office equipment under operating leases which expire at various dates through 2020. The amounts reflected in the table below are for the aggregate future minimum lease payments under non-cancelable facility and equipment operating leases. Under lease agreements that contain escalating rent provisions, lease expense is recorded on a straight-line basis over the lease term. Rent expense for the years ended December 31, 2015, 2014 and 2013 amounted to $2.1 million , $3.6 million and $3.9 million , respectively. As of December 31, 2015, future minimum lease payments are as follows (in thousands): Lease Obligations 2016 $ 2,317 2017 2,232 2018 2,269 2019 2,103 2020 1,645 Thereafter — $ 10,566 Contingencies At each reporting period, the Company evaluates whether or not a potential loss amount or a potential range of loss is probable and reasonably estimable under the provisions of the authoritative guidance that addresses accounting for contingencies. The Company is currently unable to predict the final outcome of these lawsuits and therefore cannot determine the likelihood of loss nor estimate a range of possible loss. An adverse decision in any of these proceedings could significantly harm the Company’s business and consolidated financial position, results of operations or cash flows. Tessera, Inc. v. Toshiba Corporation, Civil Action No. 5:15-cv-02543-BLF (N.D. Cal.) On May 12, 2015, Tessera, Inc. filed a complaint against Toshiba Corporation (“Toshiba”) in California Superior Court, in Santa Clara County. Tessera, Inc.’s complaint alleges causes of action for breach of contract, breach of the implied covenant of good faith and fair dealing, and declaratory relief, generally alleging that Toshiba underpaid royalties and failed to cooperate with audits conducted pursuant to the parties’ license agreement. On June 8, 2015, Toshiba removed the action to the U.S. District Court for the Northern District of California. On June 18, 2015, Toshiba filed its answer, affirmative defenses, and counterclaims to Tessera, Inc.’s complaint. Toshiba alleges counterclaims for declaratory judgment and breach of the implied warranty of good faith and fair dealing. The counterclaims seek, among other things, judicial determinations about the interpretation of the parties’ agreement, termination of the agreement, an accounting of the amount of alleged overpayments by Toshiba, restitution, and damages. On July 10, 2015, Tessera, Inc. filed its answer and affirmative defenses to Toshiba’s counterclaims. On October 15, 2015, the Court held an initial case management conference and established the case schedule. An initial summary judgment hearing on contract issues is scheduled for September 22, 2016. The fact discovery cutoff is October 31, 2016, and the expert discovery cutoff is January 23, 2017. A hearing on any remaining motions for summary judgment is set for March 16, 2017. Trial is scheduled to begin on June 19, 2017. Other Litigation Matters The Company and its subsidiaries are involved in litigation matters and claims in the normal course of business. In the past, the Company and its subsidiaries have litigated to enforce their respective patents and other intellectual property rights, to enforce the terms of license agreements, to protect trade secrets, to determine the validity and scope of the proprietary rights of others and to defend against claims of infringement or invalidity. The Company expects it or its subsidiaries will be involved in similar legal proceedings in the future, including proceedings regarding infringement of its patents and proceedings to ensure proper and full payment of royalties by licensees under the terms of its license agreements. These existing and any future legal actions may harm the Company’s business. For example, they could result in counterclaims against the Company, cause an existing licensee or strategic partner to cease making royalty or other payments to the Company, or cause an existing licensee or strategic partner to challenge the validity and enforceability of patents owned by the Company’s subsidiaries or the scope of license agreements with the Company’s subsidiaries. Litigation accordingly could significantly damage the Company’s relationship with such licensee or strategic partner and, as a result, prevent the adoption of the Company’s other technologies by such licensee or strategic partner. Litigation could also severely disrupt or shut down the business operations of licensees or strategic partners of the Company’s subsidiaries, which in turn would significantly harm ongoing relations with them and cause the Company to lose royalty revenues. The costs associated with legal proceedings are typically high, relatively unpredictable and not completely within the Company’s control. These costs may be materially higher than expected, which could adversely affect the Company’s operating results and lead to volatility in the price of its common stock. Whether or not determined in the Company’s favor or ultimately settled, litigation diverts managerial, technical, legal and financial resources from the Company’s business operations. Furthermore, an adverse decision in any of these legal actions could result in a loss of the Company’s proprietary rights, subject the Company to significant liabilities, require the Company to seek licenses from others, limit the value of the Company’s licensed technology or otherwise negatively impact the Company’s stock price or its business and consolidated financial position, results of operations or cash flows.

Segment And Geographic Informat

Segment And Geographic Information	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Segment And Geographic Information	SEGMENT AND GEOGRAPHIC INFORMATION In the first quarter of 2014, following the Company’s actions to cease manufacturing operations in the DigitalOptics business, the Company determined that it operates its business in one operating segment, focused on the monetization of intellectual property, both internally developed and acquired, through royalties, licenses and other means. Previously, the Company operated in two operating segments - Intellectual Property and DigitalOptics. The Company's chief operating decision maker is the Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions and assessing financial performance. A significant portion of the Company’s revenues is derived from licensees headquartered outside of the U.S., principally in Asia, and it is expected that these revenues will continue to account for a significant portion of total revenues in future periods. The table below lists the geographic revenues from continuing operations for the periods indicated (in thousands): Years Ended December 31, 2015 2014 2013 U.S. $ 98,428 36 % $ 39,448 14 % $ 41,878 25 % Korea 87,527 32 98,100 35 64,092 37 Taiwan 57,049 21 100,049 36 2,596 2 Other Asia 15,225 6 28,979 10 10,103 6 Japan 9,409 3 10,014 4 48,481 29 Europe and other 5,662 2 2,217 1 1,661 1 $ 273,300 100 % $ 278,807 100 % $ 168,811 100 % For the years ended December 31, 2015, 2014, and 2013, four , three and three customers, respectively, each accounted for 10% or more of total revenues. As of December 31, 2015, 2014 and 2013 property and equipment, net, by geographical area are presented below (in thousands): Years Ended December 31, 2015 2014 2013 U.S. $ 3,219 $ 3,802 $ 4,725 Europe and other 529 520 931 Taiwan — — 2,394 Israel — — 1,431 Total $ 3,748 $ 4,322 $ 9,481

Restructuring, Impairment of Lo

Restructuring, Impairment of Long-Lived Assets And Other Charges And Gain on Sale of Patents	12 Months Ended
	Dec. 31, 2015
Restructuring and Related Activities [Abstract]
Restructuring, Impairment of Long-Lived Assets And Other Charges And Gain on Sale of Patents	RESTRUCTURING, IMPAIRMENT OF LONG-LIVED ASSETS AND OTHER CHARGES AND GAIN ON SALE OF PATENTS In 2013, the Company continued reorganizing the DigitalOptics segment by closing its manufacturing operation in Zhuhai, China, and selling a significant portion of the assets of the Company's Micro-Optics business based in Charlotte, North Carolina. On January 16, 2014, the Company announced a restructuring of its DigitalOptics segment to cease all remaining manufacturing operations resulting in impairment charges related to the Company's long-lived assets. For the year ended December 31, 2013, the Company incurred cumulative charges, which include continuing and discontinued operations in total, of $5.9 million in severance and $70.9 million in impairment of long-lived assets and other charges. In 2014, the Company recorded a gain of $11.9 million on patents sold in 2014. Prior to the sale, these patents were included in the Company's patent portfolio available for licensing. This gain was partially offset by approximately $1.5 million in restructuring charges for severance and other facility costs related to reduction in administrative personnel. For more information regarding these actions, see Note 6 - " Discontinued Operations " and Note 9 - " Goodwill and Identified Intangible Assets. "

Benefit Plan

Benefit Plan	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Benefit Plan	BENEFIT PLAN The Company maintains a 401(k) retirement savings plan that allows voluntary contributions by all employees upon their hire date. Eligible employees may elect to contribute up to the maximum amount allowed under Internal Revenue Service regulations. The Company can make discretionary contribution under the 401(k) plan. During the years ended December 31, 2015, 2014 and 2013, the Company contributed approximately $0.4 million , $0.4 million , and $0.9 million , respectively, to the 401(k) Plan.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENTS Declaration of a Cash Dividend - On January 27, 2016, the Board declared a cash dividend of $0.20 per share of common stock, payable on March 16, 2016, for the stockholders of record at the close of business on February 24, 2016. Increase in the Amount Authorized for the Repurchase of the Company's Outstanding Shares of Common Stock - In January 2016, the Board authorized an additional $200.0 million in future repurchases under its stock repurchase program.

Schedule II Valuation and Quali

Schedule II Valuation and Qualifying Schedule II Valuation and Qualifying	12 Months Ended
	Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract]
Schedule II Valuation and Qualifying Accounts	Schedule II. Valuation and Qualifying Accounts for the Years Ended December 31, 2015, 2014 and 2013 Balance at Beginning of Year Charged (Credited) to Expenses Charged (Credited) to Other Accounts Balance at End of Year Deferred income tax asset: Valuation allowance 2013 $ 14,583 $ 76,547 $ — $ 91,130 2014 $ 91,130 $ (64,043 ) $ — $ 27,087 2015 $ 27,087 $ (6,485 ) $ (6,750 ) $ 13,852

Summary Of Significant Accoun27

Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Use of Estimates	Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The accounting estimates and assumptions that require management’s most significant, difficult, and subjective judgment include the recognition and measurement of current and deferred income tax assets and liabilities, the fair value measurements of investments, the assessment of the recoverability of goodwill, the assessment of useful lives and recoverability of long-lived assets, the assessment of unrecognized tax benefits and the valuation and recognition of stock-based compensation expense, among others. Actual results experienced by the Company may differ from management’s estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents. Cash and cash equivalents are maintained with various financial institutions.
Financial Instruments	Financial Instruments Investments consist primarily of municipal bonds and notes, corporate bonds and notes, treasury and agency notes and bills, commercial paper, certificates of deposit, and money market funds. Investments with remaining maturities from original purchase date of three months or less are considered to be cash equivalents. Investments with remaining maturities from original purchase date greater than three months are generally classified as available-for-sale, if required, in current operations, and are classified as short-term investments. Investments determined to lack an active market for a period greater than 12 months are classified as available-for-sale and classified as long-term investments. The Company’s cash equivalents and short-term investments are classified as available-for-sale. Unrealized gains and losses on securities, net of tax, are recorded in accumulated other comprehensive income and reported as a separate component of stockholders’ equity. The Company evaluates the investments periodically for possible other-than-temporary impairment and reviews factors such as the length of time and extent to which fair value has been below cost basis, the financial condition of the issuer, the Company’s ability and intent to hold the security until maturity on a more-likely-than-not basis. If the declines in the fair value of the investments are determined to be other-than-temporary, the Company reports the credit loss portion of such decline in other income and expense, net, and the remaining noncredit loss portion in accumulated other comprehensive income. The cost of securities sold is based on the specific identification method. Interest and dividend income and realized gains or losses are included in other income and expense, net.
Concentration of credit and other risks	Concentration of credit and other risks Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash equivalents, short-term investments and accounts receivable. The Company follows a corporate investment policy which sets credit, maturity and concentration limits and regularly monitors the composition, market risk and maturities of these investments. The Company believes that any concentration of credit risk in its accounts receivable is substantially mitigated by the Company’s evaluation process, relatively short collection terms and the high level of credit worthiness of its customers. The Company performs ongoing credit evaluations of its customers’ financial condition and limits the amount of credit extended when deemed necessary but generally requires no collateral.
Goodwill and identified intangible assets	Goodwill and identified intangible assets Goodwill . Goodwill is recorded as the difference, if any, between the aggregate consideration paid for an acquisition and the fair value of the net tangible and identified intangible assets acquired under a business combination. The Company reviews impairment of goodwill annually in the fourth quarter. The Company first assesses qualitative factors to determine whether it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. If the Company concludes it is more-likely-than-not that the fair value of a reporting unit exceeds its carrying amount, it need not perform the two-step impairment test. If based on the qualitative assessment, the Company believes it is more-likely-than-not that the fair value of its reporting units is less than its carrying value, a two-step goodwill impairment test is required to be performed. The first step requires the Company to compare the fair value of each reporting unit to its carrying value including allocated goodwill. The Company determines the fair value of its reporting units using an equal weighting of the results derived from an income approach and a market approach. The income approach is estimated through the discounted cash flow method based on assumptions about future conditions such as future revenue growth rates, new product and technology introductions, gross margins, operating expenses, discount rates, future economic and market conditions, and other assumptions. The market approach estimates the fair value of the Company’s equity by utilizing the market comparable method which is based on revenue multiples from comparable companies in similar lines of business. If the carrying value of a reporting unit exceeds the reporting unit’s fair value, the Company performs the second step of the goodwill impairment test to determine the amount of impairment loss. The second step of the goodwill impairment test involves comparing the implied fair value of the reporting unit with the carrying value of the reporting unit. An impairment charge is recognized for the excess of the carrying value of the reporting unit over its implied fair value. Determining the fair value of a reporting unit is subjective in nature and requires the use of significant estimates and assumptions, including revenue growth rates and operating margins, discount rates and future market conditions, among others. Identified intangible assets . Identified intangible assets consist of acquired patents, existing technology, trade names, assembled workforce and non-compete agreements resulting from business combinations, and acquired patents under asset purchase agreements. The Company’s identified intangible assets are amortized on a straight-line basis over their estimated useful lives, ranging from 2 to 15 years . The Company makes judgments about the recoverability of purchased finite-lived intangible assets whenever facts and circumstances indicate that the useful life is shorter than originally estimated or that the carrying amount of assets may not be recoverable. If such facts and circumstances exist, the Company assesses recoverability by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Impairments, if any, are based on the excess of the carrying amount over the fair value of those assets. If the useful life is shorter than originally estimated, the Company would accelerate the rate of amortization and amortize the remaining carrying value over the new shorter useful life. For further discussion of goodwill and identified intangible assets, see “Note 9 – Goodwill and Identified Intangible Assets.”
Treasury stock	Treasury stock The Company accounts for stock repurchases using the cost method. For reissuance of treasury stock, to the extent that the reissuance price is more than the cost, the excess is recorded as an increase to capital in excess of par value. If the reissuance price is less than the cost, the difference is recorded in capital in excess of par value to the extent there is a cumulative treasury stock paid-in capital balance. Once the cumulative balance is reduced to zero , any remaining difference resulting from the sale of treasury stock below cost is recorded as a reduction of retained earnings.
Revenue Recognition	Revenue recognition The Company derives its revenue from royalty and license fees. Revenues are recognized when there is persuasive evidence of an arrangement, delivery has occurred, the fee is fixed or determinable, and collectability of the resulting receivable is reasonably assured. Determining whether and when these criteria have been satisfied requires the Company to make assumptions and judgments which could have a significant impact on the timing and amount of revenues it reports. Royalty revenues are generated from a licensee's production or shipment of licensed products incorporating the Company’s intellectual property, technologies or software. Running royalties are primarily based on unit volumes shipped. Licensees generally report shipment information within 30 to 60 days following the end of the quarter. From time to time the Company also enters into license agreements that provide for fixed license fees or royalty payments. When there is no reliable basis on which the Company can estimate its royalty revenues prior to obtaining these reports from the licensees, the Company recognizes royalty revenues on a one-quarter lag. Royalty revenue also includes payments resulting from periodic compliance audits of licensees, as part of a settlement of a patent infringement dispute, or judgments of license dispute. License revenues are generated from license agreements for certain rights to the Company’s intellectual property technologies. The Company also derives revenue from software licenses for digital and video photography image enhancement technology. In some instances, the Company may enter into license agreements that involve multiple element arrangements to also include technology transfer, design, technical service and unspecified support. For technology and software licenses, revenue is recognized upon delivery or on a straight-line basis over the period in which the unspecified support or service is performed. The Company recognizes revenue from litigation settlements when payments are received which is deemed to be when collectability is reasonably assured. The Company provides payment terms to licensees based upon their financial strength, credit worthiness and the Company’s collection experience with the licensee. If the Company provides extended payment terms, revenue is deferred until payment is due.
Indemnification	Indemnification The Company provides indemnification of varying scope to certain customers against claims of intellectual property infringement made by third parties arising from the use of the Company’s technologies. In accordance with authoritative guidance for accounting for guarantees, the Company evaluates estimated losses for such indemnification. The Company considers such factors as the degree of probability of an unfavorable outcome and the ability to make a reasonable estimate of the amount of loss. To date, no such claims have been filed against the Company and, as a result, no liability has been recorded in the Company’s financial statements. As permitted under Delaware law, the Company has agreements whereby it indemnifies its officers and directors for certain events or occurrences while the officer or director is, or was, serving at the Company’s request in such capacity. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has Directors’ and Officers’ Liability insurance coverage that is intended to reduce its financial exposure and may enable the Company to recover a portion of any such payments. The Company believes the estimated fair value of these indemnification agreements in excess of applicable insurance coverage is minimal.
Research, development and other related costs	Research, development and other related costs Research, development and other related costs consist primarily of compensation and related costs for personnel, as well as costs related to patent applications and examinations, product "tear downs" and reverse engineering, materials, supplies and equipment depreciation. Research and development is conducted primarily in-house and targets development of chip-scale and multi-chip packaging, circuitry design, 3D-IC architectures, wafer-level packaging technology, advanced substrates, and image enhancement technology. All research, development and other related costs are expensed as incurred.
Stock-based compensation expense	Stock-based compensation expense The Company accounts for stock-based compensation expense in accordance with the authoritative guidance on share-based payment. Under the provisions of the guidance, stock-based compensation expense is measured at the grant date based on the fair value of the option using a Black-Scholes option pricing model and is recognized as expense on a straight-line basis over the requisite service period, which is generally the vesting period. The fair value of the Company’s stock awards for non-employees was estimated based on the fair market value on each vesting date, accounted for under the variable-accounting method. The authoritative guidance also requires that the Company measure and recognize stock-based compensation expense upon modification of the term of stock award. The stock-based compensation expense for such modification is the sum of any unamortized expense of the award before modification and the modification expense. The modification expense is the incremental amount of the fair value of the award before the modification and the fair value of the award after the modification, measured on the date of modification. In the case when the modification results in a longer requisite period than in the original award, the Company has elected to apply the pool method where the aggregate of the unamortized expense and the modification expense is amortized over the new requisite period on a straight-line basis. In addition, any forfeiture will be based on the original requisite period prior to the modification. Calculating stock-based compensation expense requires the input of highly subjective assumptions, including the expected term of the stock-based awards, stock price volatility, and the pre-vesting option forfeiture rate. The Company estimates the expected life of options granted based on historical exercise patterns, which are believed to be representative of future behavior. The Company estimates the volatility of the Company’s common stock on the date of grant based on historical volatility. The assumptions used in calculating the fair value of stock-based awards represent the Company’s best estimates, but these estimates involve inherent uncertainties and the application of management judgment. As a result, if factors change and the Company uses different assumptions, its stock-based compensation expense could be materially different in the future. In addition, the Company is required to estimate the expected forfeiture rate and only recognize expense for those shares expected to vest. The Company estimates the forfeiture rate based on historical experience of its stock-based awards that are granted, exercised and cancelled. If the actual forfeiture rate is materially different from the estimate, stock-based compensation expense could be significantly different from what was recorded in the current period. See Note 12 – “Stock-based Compensation Expense” for additional detail.
Income Taxes	Income taxes The Company must make certain estimates and judgments in determining income tax expense for financial statement purposes. These estimates and judgments occur in the calculation of tax credits, tax benefits, tax deductions, and in the calculation of certain deferred taxes and tax liabilities. Significant changes to these estimates may result in an increase or decrease to the Company’s tax provision in a subsequent period. The provision for income taxes was comprised of the Company’s current tax liability and changes in deferred income tax assets and liabilities. The calculation of the current tax liability involves dealing with uncertainties in the application of complex tax laws and regulations and in determining the liability for tax positions, if any, taken on the Company’s tax returns in accordance with authoritative guidance on accounting for uncertainty in income taxes. Deferred income taxes are determined based on the differences between the financial reporting and tax basis of assets and liabilities. The Company must assess the likelihood that it will be able to recover the Company’s deferred tax assets. If recovery is not likely on a more-likely-than-not basis, the Company must increase its provision for income taxes by recording a valuation allowance against the deferred tax assets that it estimates will not ultimately be recoverable. However, should there be a change in the Company’s ability to recover its deferred tax assets, the provision for income taxes would fluctuate in the period of such change. See Note 13 – “Income Taxes” for additional detail.
Contingencies	Contingencies From time to time, the Company may be involved in legal and administrative proceedings and claims of various types. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. Management reviews these estimates in each accounting period as additional information becomes known and adjusts the loss provision when appropriate. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in the consolidated financial statements. If a loss is probable but the amount of loss cannot be reasonably estimated, the Company discloses the loss contingency and an estimate of possible loss or range of loss (unless such an estimate cannot be made). The Company does not recognize gain contingencies until they are realized. Legal costs incurred in connection with loss contingencies are expensed as incurred. See Note 14 – " Commitments and Contingencies ,” for further information regarding the Company’s pending litigation.
Property and equipment	Property and equipment Property and equipment are recorded at cost and depreciated using the straight-line method over their estimated useful lives. The depreciable lives range from one to five years.
Fair value	The Company follows the authoritative guidance fair value measurement and the fair value option for financial assets and financial liabilities. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability, or an exit price, in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The established fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value: Level 1 Quoted prices in active markets for identical assets. Level 2 Observable market-based inputs or unobservable inputs that are corroborated by market data. Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Customers Comprising 10% or More of Total Revenues	The following table sets forth revenues generated from customers which comprise 10% or more of total revenues for the periods indicated: Years Ended December 31, 2015 2014 2013 Samsung Electronics, Co. Ltd. 19 % 24 % 11 % Micron Technology, Inc. 15 % *% *% Amkor Technologies, Inc. 14 % *% *% SK hynix Inc. 13 % 11 % 26 % Powertech Technology Inc. *% 34 % * % Sony Corporation *% *% 18 % * denotes less than 10% of total revenues.

Composition Of Certain Financ29

Composition Of Certain Financial Statement Captions (Tables)	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Other Current Assets	Other current assets consisted of the following (in thousands): December 31, 2015 December 31, 2014 Prepaid income taxes $ 22,890 $ 12,841 Interest receivable 2,427 2,138 Other 2,813 2,298 $ 28,130 $ 17,277
Accrued Liabilities	Accrued liabilities consisted of the following (in thousands): December 31, 2015 December 31, 2014 Employee compensation and benefits $ 6,848 $ 10,734 Other 3,414 2,550 $ 10,262 $ 13,284
Accumulated Other Comprehensive Loss	Accumulated other comprehensive loss consisted of the following (in thousands): December 31, 2015 December 31, 2014 Unrealized loss on available-for-sale securities, net of tax $ (1,437 ) $ (333 ) $ (1,437 ) $ (333 )

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of Marketable Securities	The following is a summary of marketable securities at December 31, 2015 and December 31, 2014 (in thousands): December 31, 2015 Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Values Available-for-sale securities Corporate bonds and notes $ 257,461 $ 7 $ (1,286 ) $ 256,182 Municipal bonds and notes 70,772 12 (81 ) 70,703 Commercial paper 5,377 3 — 5,380 Treasury and agency notes and bills 26,973 — (93 ) 26,880 Money market funds 715 — — 715 Total available-for-sale securities $ 361,298 $ 22 $ (1,460 ) $ 359,860 Reported in: Cash and cash equivalents $ 715 Short-term investments 359,145 Total marketable securities $ 359,860 December 31, 2014 Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Values Available-for-sale securities Corporate bonds and notes $ 282,279 $ 13 $ (538 ) $ 281,754 Municipal bonds and notes 37,201 15 (1 ) 37,215 Treasury and agency notes and bills 41,271 10 (13 ) 41,268 Commercial paper 33,774 2 (1 ) 33,775 Money market funds 20,883 — — 20,883 Total available-for-sale securities $ 415,408 $ 40 $ (553 ) $ 414,895 Reported in: Cash and cash equivalents $ 31,382 Short-term investments 383,513 Total marketable securities $ 414,895
Schedule of Gross Unrealized Losses on Investments	The following table summarizes the fair value and gross unrealized losses related to individual available-for-sale securities at December 31, 2015 and 2014, which have been in a continuous unrealized loss position, aggregated by investment category and length of time (in thousands): December 31, 2015 Less Than 12 Months 12 Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate bonds and notes $ 183,491 $ (1,162 ) $ 70,447 $ (124 ) $ 253,938 $ (1,286 ) Municipal bonds and notes 60,976 (81 ) — — 60,976 (81 ) Treasury and agency notes 26,880 (93 ) — — 26,880 (93 ) Total $ 271,347 $ (1,336 ) $ 70,447 $ (124 ) $ 341,794 $ (1,460 ) December 31, 2014 Less Than 12 Months 12 Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate bonds and notes $ 240,165 $ (535 ) $ 5,453 $ (3 ) $ 245,618 $ (538 ) Municipal bonds and notes 1,061 (1 ) — — 1,061 (1 ) Commercial paper 9,482 (1 ) — — 9,482 (1 ) Treasury and agency notes and bills 16,245 (13 ) — — 16,245 (13 ) Total $ 266,953 $ (550 ) $ 5,453 $ (3 ) $ 272,406 $ (553 )
Estimated Fair Value of Marketable Securities by Contractual Maturity	The estimated fair value of marketable securities by contractual maturity at December 31, 2015 is shown below (in thousands). Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations without call or prepayment penalties. Estimated Fair Value Due in one year or less $ 153,396 Due in one to two years 119,693 Due in two to three years 86,771 Total $ 359,860

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	The results from discontinued operations were as follows (in thousands): Years Ended December 31, 2015 2014 2013 Revenues: Product and service revenues $ — $ 32 $ 6,524 Total revenues — 32 6,524 Operating expenses: Cost of revenues — 21 12,276 Research, development and other related costs — 6,190 60,117 Selling, general and administrative 389 6,254 11,833 Restructuring, impairment of long-lived assets and other charges and gain on sale of patents (371 ) (3,178 ) (1 ) 72,280 (2 ) Impairment of goodwill — — 6,548 (3 ) Total operating expenses 18 9,287 163,054 Other income and (expense), net — 629 572 Operating loss before taxes (18 ) (8,626 ) (155,958 ) Expense (benefit) from income taxes 83 (4,137 ) (11,312 ) Net loss from discontinued operations $ (101 ) $ (4,489 ) $ (144,646 ) (1) As noted above, the Company has undergone significant restructuring activities in 2014. The majority of restructuring, impairment and other charges occurred during 2013. In 2014, the company sold assets and the proceeds are netted against expenses. (2) As noted above, the Company has undergone restructuring activities in 2013. The majority of restructuring, impairment and other charges occurred during 2013. In 2013, the Company incurred $45.0 million in the impairment of fixed assets which primarily consisted of manufacturing equipment used in both the Zhuhai and Taiwan facilities, $16.6 million in the impairment of intangible assets which included the Eyesquad and Siimpel portfolios and $4.7 million of severance costs due to the related reductions in force. (3) See Note 9 – "Goodwill and Identified Intangible Assets." The current assets and current liabilities of discontinued operations were as follows (in thousands): December 31, December 31, Accounts receivable and other assets, net $ — $ 390 Property and equipment, net — — Total assets of discontinued operations $ — $ 390 Accrued liabilities (1) $ — $ 2,873 Total liabilities of discontinued operations $ — $ 2,873 (1) The December 31, 2014 balances relate to the cessation of all mems|cam manufacturing operations. This amount included lease obligations and employee severance which were settled in cash in the first half of 2015. This amount is included in "Other current liabilities" on the condensed consolidated balance sheet.

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis	The following is a list of the Company’s assets required to be measured at fair value on a recurring basis and where they were classified within the hierarchy as of December 31, 2015 (in thousands): Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Marketable securities Money market funds (1) $ 715 $ 715 $ — $ — Corporate bonds and notes (2) 256,182 — 256,182 — Municipal bonds and notes (2) 70,703 — 70,703 — Treasury and agency notes and bills (2) 26,880 — 26,880 — Commercial paper (2) 5,380 — 5,380 — Total Assets $ 359,860 $ 715 $ 359,145 $ — The following footnotes indicate where the noted items were recorded in the Consolidated Balance Sheet at December 31, 2015: (1) Reported as cash and cash equivalents. (2) Reported as short-term investments. The following is a list of the Company’s assets required to be measured at fair value on a recurring basis and where they were classified within the hierarchy as of December 31, 2014 (in thousands): Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Marketable securities Money market funds (1) $ 20,883 $ 20,883 $ — $ — Corporate bonds and notes (2) 281,754 — 281,754 — Municipal bonds and notes (2) 37,215 — 37,215 — Treasury and agency notes and bills (2) 41,268 — 41,268 — Commercial paper (3) 33,775 — 33,775 — Total Assets $ 414,895 $ 20,883 $ 394,012 $ — The following footnotes indicate where the noted items were recorded in the Consolidated Balance Sheet at December 31, 2014: (1) Reported as cash and cash equivalents. (2) Reported as short-term investments. (3) Reported as either cash and cash equivalents or short-term investments.
Fair Value Measurements, Nonrecurring	The following table represents the activity in level 3 assets (in thousands): Assets held for sale Assets included in discontinued operations and held for sale Other Balance at December 31, 2013 $ — $ 9,720 (1 ) $ — Assets transferred — 1,398 — Assets sold — (11,118 ) (2 ) — Assets received — — 4,280 Balance at December 31, 2014 $ — $ — $ 4,280 Assets transferred — — — Assets sold — — — Assets received — — — Balance at December 31, 2015 $ — $ — $ 4,280 (3 ) (1) Comprised of assets remaining after the sale of the Micro-Optics business located in Charlotte, North Carolina, which was completed in August 2013 and assets remaining as a result of the cessation of the Company's mems|cam manufacturing activities. See Note 6 - " Discontinued Operations " for more information. These assets are carried at market value as determined by specific third party quotes. (2) The assets in footnote 1 above were sold in 2014. These assets sold for $17.1 million in the aggregate and resulted in a gain of $5.8 million . (3) This amount represents the value of the patents that were received as part of licensing settlements with customers. These assets were valued using a methodology based on an arms-length purchase price of bulk patent assets, with adjustments based on limited pick rights, the total available market, and remaining average patent life. The value above is gross and the accumulated amortization to date is $1.0 million .

Business Combinations Busines33

Business Combinations Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Acquisition purchase price allocation	Based upon the fair values acquired, the purchase price allocation is as follows (unaudited, in thousands): Amount Estimated Useful Life (Years) Net tangible assets and liabilities: Unbilled contract asset $ 3,380 Deferred tax assets and liabilities, net (7,671 ) (1 ) Other accrued liabilities (385 ) $ (4,676 ) Identified intangible assets: Patents/existing technology $ 32,300 5-8 Trade name 1,300 8 Customer relationships 1,600 2 Goodwill 8,037 (2) N/A $ 43,237 Total purchase price $ 38,561 (1) The $7.7 million of deferred tax assets and liabilities, net is the anticipated tax effect from the amortization of identified intangible assets acquired, net of tax benefits from operating losses the Company expects to utilize. (2) The Company does not anticipate that any of this goodwill will be deductible for tax purposes.
Pro forma revenue and earnings	The amounts of revenue and earnings that would have been included in the Company’s condensed consolidated statement of operations for the year ended December 31, 2015 for the combined entity had the acquisition date been January 1, 2014, are as follows (unaudited, in thousands): Revenue Earnings Actual for the year ended December 31, 2014 $ 278,807 $ 170,454 Actual for the year ended December 31, 2015 $ 273,300 $ 117,016 Supplemental pro forma for the year ended December 31, 2014 (unaudited) $ 282,637 $ 167,165 (1) Supplemental pro forma for the year ended December 31, 2015 (unaudited) $ 304,615 (3) $ 137,595 (1) (2) (3) (1) Includes $5.6 million in pre-tax amortization costs related to the intangible assets acquired. (2) Excludes $3.1 million in acquisition related costs, primarily financial advisor fees and contract settlement costs incurred by Ziptronix in connection with the acquisition. (3) Almost all of the revenue and earnings related to Ziptronix in this period is the result of one -time license fee payments during the three months ended March 31, 2015 (unaudited).

Goodwill And Identified Intan34

Goodwill And Identified Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes to the carrying value of goodwill from January 1, 2014 through December 31, 2015 are reflected below (in thousands): December 31, 2013 $ — Goodwill acquired 2,099 December 31, 2014 $ 2,099 Goodwill acquired through the acquisition of Ziptronix, Inc. (1) 8,037 December 31, 2015 $ 10,136 (2) (1) For more information regarding this transaction, see Note 8 - "Business Combinations." (2) This amount is included in "Other assets" on the consolidated balance sheet.
Identified Intangible Assets	Identified intangible assets consisted of the following (in thousands): December 31, 2015 December 31, 2014 Average Life (Years) Gross Assets Accumulated Amortization Net Gross Assets Accumulated Amortization Net Acquired patents / core technology (1) 3-15 $ 140,345 $ (79,128 ) $ 61,217 $ 132,157 $ (62,053 ) $ 70,104 Existing technology (2) 5-10 50,620 (20,182 ) 30,438 18,700 (17,932 ) 768 Customer contracts 3-9 10,200 (7,792 ) 2,408 8,600 (6,569 ) 2,031 Trade name 4-10 1,600 (574 ) 1,026 520 (498 ) 22 $ 202,765 $ (107,676 ) $ 95,089 $ 159,977 $ (87,052 ) $ 72,925 (1) In 2014, $5.9 million in patents were purchased and $4.3 million in patents were received through litigation settlements. (2) In 2015, $31.7 million of existing technology was acquired through our acquisition of Ziptronix. For more information regarding this existing technology, see Note 8 - " Business Combinations ."
Estimated Future Amortization Expense	As of December 31, 2015, the estimated future amortization expense of intangible assets is as follows (in thousands): 2016 $ 23,570 2017 21,029 2018 18,713 2019 10,279 2020 6,133 Thereafter 15,365 $ 95,089

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Loss Per Share	The following table sets forth the computation of basic and diluted shares (in thousands): Years Ended December 31, 2015 2014 2013 Weighted average common shares outstanding 51,841 52,898 53,431 Unvested common shares subject to repurchase (39 ) (79 ) (85 ) Total common shares-basic 51,802 52,819 53,346 Effect of dilutive securities: Stock awards 343 346 — Restricted stock awards and units 441 398 — Total common shares-diluted 52,586 53,563 53,346

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity	A summary of the stock option activity is presented below (in thousands, except per share amounts): Options Outstanding Number of Shares Subject to Options Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (in years) Aggregate Intrinsic Value Balance at December 31, 2012 7,099 $17.80 Options granted 1,204 $19.00 Options exercised (2,031 ) $16.51 Options canceled / forfeited / expired (2,355 ) $18.59 Balance at December 31, 2013 3,917 $18.37 Options granted 220 $22.29 Options exercised (1,797 ) $18.13 Options canceled / forfeited / expired (724 ) $18.00 Balance at December 31, 2014 1,616 $19.34 Options granted 84 $36.60 Options exercised (465 ) $19.35 Options canceled / forfeited / expired (93 ) $19.04 Balance at December 31, 2015 1,142 $20.63 7.39 $ 11,369 Vested and expected to vest at December 31, 2015 1,040 7.30 $ 10,559 Exercisable at December 31, 2015 502 6.52 $ 5,603
Summary of Stock Options Outstanding and Exercisable	The following table summarizes information about stock options outstanding and exercisable under all of the Company’s plans at December 31, 2015: Options Outstanding Options Exercisable Range of Exercise Prices per Share Number Outstanding (in thousands) Weighted Average Remaining Contractual Life (in years) Weighted Average Exercise Price per Share Number Exercisable (in thousands) Weighted Average Exercise Price per Share $12.52 - $14.91 137 6.07 $ 14.10 100 $ 13.92 $15.35 - $18.74 73 6.31 $ 16.90 43 $ 17.03 $18.84 - $18.84 367 7.94 $ 18.84 148 $ 18.84 $18.89 - $19.08 118 7.71 $ 19.02 73 $ 19.04 $19.33 - $20.01 68 6.94 $ 19.68 29 $ 19.61 $20.43 - $20.43 134 7.47 $ 20.43 47 $ 20.43 $20.63 - $26.34 128 7.19 $ 23.50 40 $ 24.44 $28.20 - $44.27 117 7.93 $ 35.27 24 $ 33.03 $12.52 - $44.27 1,142 7.39 $ 20.63 502 $ 19.04
Summary of Restricted Stock Awards and Units	Information with respect to outstanding restricted stock awards and units as of December 31, 2015 is as follows (in thousands, except per share amounts): Restricted Stock and Restricted Stock Units Number of Shares Subject to Time- based Vesting Number of Shares Subject to Performance- based Vesting Total Number of Shares Weighted Average Grant Date Fair Value Per Share Balance at December 31, 2012 715 116 831 $ 16.36 Awards and units granted 596 358 954 $ 19.26 Awards and units vested / earned (262 ) (27 ) (289 ) $ 17.45 Awards and units canceled / forfeited (312 ) (99 ) (411 ) $ 16.77 Balance at December 31, 2013 737 348 1,085 $ 18.46 Awards and units granted 222 309 531 $ 22.41 Awards and units vested / earned (289 ) — (289 ) $ 18.85 Awards and units canceled / forfeited (168 ) (24 ) (192 ) $ 17.91 Balance at December 31, 2014 502 633 1,135 $ 20.30 Awards and units granted 472 90 562 $ 39.77 Awards and units vested / earned (240 ) (144 ) (384 ) $ 20.17 Awards and units canceled / forfeited (44 ) (60 ) (104 ) $ 21.54 Balance at December 31, 2015 690 519 1,209 $ 29.28

Stock-Based Compensation Expe37

Stock-Based Compensation Expense (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Effect of Recording Stock-Based Compensation Expense	The effect of recording stock-based compensation expense for the years ended December 31, 2015, 2014 and 2013 is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Cost of revenues $ — $ 18 $ 50 Research, development and other related costs 4,005 2,823 3,591 Selling, general and administrative 7,512 10,428 9,862 Total stock-based compensation expense 11,517 13,269 13,503 Tax effect on stock-based compensation expense (3,107 ) (1,968 ) — Net effect on net income (loss) $ 8,410 $ 11,301 $ 13,503
Stock-Based Compensation Expense Categorized by Equity Components	Stock-based compensation expense categorized by various equity components for the years ended December 31, 2015, 2014 and 2013 is summarized in the table below (in thousands): Years Ended December 31, 2015 2014 2013 Employee stock options $ 2,676 $ 3,336 $ 7,815 Restricted stock awards and units 8,232 9,322 4,317 Employee stock purchase plan 609 611 1,371 Total stock-based compensation expense $ 11,517 $ 13,269 $ 13,503
Schedule of Assumptions Used To Value Options Granted	The following assumptions were used to value the options granted: Years Ended December 31, 2015 2014 2013 Expected life (in years) 3.8 4.9 5.0 Risk-free interest rate 1.1 - 1.4% 1.6 - 1.8% 0.8 - 1.8% Dividend yield 2.1 - 2.9% 3.4 - 4.1% 2.1 - 3.8% Expected volatility 34.0 - 35.6% 37.3 - 41.4% 44.2 - 59.5% The following assumptions were used to value the ESPP shares: Years Ended December 31, 2015 2014 2013 Expected life (years) 2.0 2.0 2.0 Risk-free interest rate 0.4 - 0.7% 0.3 - 0.5% 0.3 - 0.4% Dividend yield 2.1 - 3.4% 3.4 - 3.5% 2.3 - 3.8% Expected volatility 29.7 - 30.0% 27.6 - 30.6% 38.9 - 40.6%

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Components of Income (Loss) Before Income Taxes	The components of total income (loss) before taxes from continuing operations are as follows (in thousands): Years ended December 31, 2015 2014 2013 U.S. $ 151,862 $ 155,757 $ (36,096 ) Foreign 13,772 11,489 31,047 Total income (loss) before taxes from continuing operations $ 165,634 $ 167,246 $ (5,049 )
Components of Provision for Income Taxes	The provision for (benefit from) income taxes consisted of the following (in thousands): Years ended December 31, 2015 2014 2013 Current: U.S. federal $ 2,737 $ (797 ) $ (4,350 ) Foreign 26,275 31,824 14,967 State and local 319 8 8 Total current 29,331 31,035 10,625 Deferred: U.S. federal 23,478 (38,732 ) 25,235 Foreign (4,138 ) — — State and local (154 ) — — Total deferred 19,186 (38,732 ) 25,235 Provision for (benefit from) income taxes $ 48,517 $ (7,697 ) $ 35,860
Component of Company's Deferred Tax Assets and Liabilities	Significant components of the company’s deferred tax assets and liabilities are as follows (in thousands): December 31, 2015 2014 Deferred tax assets Net operating loss carryforwards $ 15,268 $ 15,053 Research tax credit 5,438 8,332 Foreign tax credit 5,587 22,885 Expenses not currently deductible 12,453 15,096 Basis difference in fixed and intangible assets 4,227 7,090 Gross deferred tax assets 42,973 68,456 Valuation allowance (13,852 ) (27,087 ) Net deferred tax assets 29,121 41,369 Deferred tax liabilities Acquired intangible assets, foreign (13,597 ) (276 ) Unremitted earnings of foreign subsidiaries (130 ) (187 ) Net deferred tax assets $ 15,394 $ 40,906
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the statutory U.S. federal income tax rate to the Company’s effective tax rate is as follows: Years Ended December 31, 2015 2014 2013 U.S. federal statutory rate 35.0 % 35.0 % (35.0 )% State, net of federal benefit — — 0.1 Stock-based compensation expense 0.5 0.3 4.0 Tax exempt interest (0.1 ) — (2.6 ) Research tax credit and other (0.3 ) (0.3 ) (11.2 ) Foreign withholding tax 15.7 18.8 292.5 Foreign losses not benefited — — (32.8 ) Foreign tax rate differential (2.8 ) (2.2 ) (7.4 ) Foreign tax credit (15.3 ) (17.9 ) — Change in valuation allowance (3.0 ) (38.7 ) 491.1 Others (0.4 ) 0.4 11.5 Total 29.3 % (4.6 )% 710.2 %
Reconciliation of Unrecognized Tax Benefits	The reconciliation of the Company's unrecognized tax benefits for the years ended December 31, 2015, 2014 and 2013 is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Total unrecognized tax benefits at January 1 $ 2,734 $ 5,031 $ 4,831 Gross increases and decreases due to tax positions taken in prior periods 699 (193 ) 18 Gross increases and decreases due to tax positions taken in the current period 103 150 290 Gross increases and decreases due to settlements with taxing authorities — (2,023 ) (87 ) Gross increases and decreases due to lapses in applicable statutes of limitations (465 ) (231 ) (21 ) Total unrecognized tax benefits at December 31 $ 3,071 $ 2,734 $ 5,031

Commitments And Contingencies (

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments and Purchase Obligations	As of December 31, 2015, future minimum lease payments are as follows (in thousands): Lease Obligations 2016 $ 2,317 2017 2,232 2018 2,269 2019 2,103 2020 1,645 Thereafter — $ 10,566

Segment And Geographic Inform40

Segment And Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Schedule of Geographic Revenue Information	The table below lists the geographic revenues from continuing operations for the periods indicated (in thousands): Years Ended December 31, 2015 2014 2013 U.S. $ 98,428 36 % $ 39,448 14 % $ 41,878 25 % Korea 87,527 32 98,100 35 64,092 37 Taiwan 57,049 21 100,049 36 2,596 2 Other Asia 15,225 6 28,979 10 10,103 6 Japan 9,409 3 10,014 4 48,481 29 Europe and other 5,662 2 2,217 1 1,661 1 $ 273,300 100 % $ 278,807 100 % $ 168,811 100 %
Schedule of Property and Equipment, Net, by Geographical Area	As of December 31, 2015, 2014 and 2013 property and equipment, net, by geographical area are presented below (in thousands): Years Ended December 31, 2015 2014 2013 U.S. $ 3,219 $ 3,802 $ 4,725 Europe and other 529 520 931 Taiwan — — 2,394 Israel — — 1,431 Total $ 3,748 $ 4,322 $ 9,481

Summary Of Significant Accoun41

Summary Of Significant Accounting Policies (Narrative) (Details) - customer	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Concentration Risk [Line Items]
Concentration of risk	100.00%	100.00%	100.00%
Aggregate gross trade receivables | Customer Concentration Risk
Concentration Risk [Line Items]
Number of customers, concentration of risk disclosure	4	2
Customer One | Aggregate gross trade receivables | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration of risk	26.00%	60.00%
Customer Two | Aggregate gross trade receivables | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration of risk	21.00%	11.00%
Customer Three | Aggregate gross trade receivables | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration of risk	13.00%
Customer Four | Aggregate gross trade receivables | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration of risk	12.00%
Samsung Electronics, Co. Ltd. | Total revenues
Concentration Risk [Line Items]
Concentration of risk	19.00%	24.00%	11.00%
Micron Technology, Inc. | Total revenues
Concentration Risk [Line Items]
Concentration of risk	15.00%
Amkor Technologies, Inc. | Total revenues
Concentration Risk [Line Items]
Concentration of risk	14.00%
SK hynix Inc. | Total revenues
Concentration Risk [Line Items]
Concentration of risk	13.00%	11.00%	26.00%
Powertech Technology Inc. | Total revenues
Concentration Risk [Line Items]
Concentration of risk		34.00%
Sony Corporation | Total revenues
Concentration Risk [Line Items]
Concentration of risk			18.00%

Summary Of Significant Accoun42

Summary Of Significant Accounting Policies - Identifiable Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2015
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years

Composition Of Certain Financ43

Composition Of Certain Financial Statement Captions - Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid income taxes	$ 22,890	$ 12,841
Interest receivable	2,427	2,138
Other	2,813	2,298
Other current assets, total	$ 28,130	$ 17,277

Composition Of Certain Financ44

Composition Of Certain Financial Statement Captions- - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Employee compensation and benefits	$ 6,848	$ 10,734
Other	3,414	2,550
Accrued liabilities, total	$ 10,262	$ 13,284

Composition Of Certain Financ45

Composition Of Certain Financial Statement Captions - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Unrealized loss on available-for-sale securities, net of tax	$ (1,437)	$ (333)
Accumulated other comprehensive income (loss)	$ (1,437)	$ (333)

Financial Instruments - Summary

Financial Instruments - Summary of Marketable Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Cost	$ 361,298	$ 415,408
Gross Unrealized Gains	22	40
Gross Unrealized Losses	(1,460)	(553)
Estimated Fair Value	359,860	414,895
Corporate bonds and notes
Schedule of Available-for-sale Securities [Line Items]
Cost	257,461	282,279
Gross Unrealized Gains	7	13
Gross Unrealized Losses	(1,286)	(538)
Estimated Fair Value	256,182	281,754
Municipal bonds and notes
Schedule of Available-for-sale Securities [Line Items]
Cost	70,772	37,201
Gross Unrealized Gains	12	15
Gross Unrealized Losses	(81)	(1)
Estimated Fair Value	70,703	37,215
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Cost	5,377	33,774
Gross Unrealized Gains	3	2
Gross Unrealized Losses	0	(1)
Estimated Fair Value	5,380	33,775
Treasury and agency notes and bills
Schedule of Available-for-sale Securities [Line Items]
Cost	26,973	41,271
Gross Unrealized Gains	0	10
Gross Unrealized Losses	(93)	(13)
Estimated Fair Value	26,880	41,268
Money market funds
Schedule of Available-for-sale Securities [Line Items]
Cost	715	20,883
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	715	20,883
Cash and cash equivalents
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value	715	31,382
Short-term investments
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value	$ 359,145	$ 383,513

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule of Investments [Line Items]
Cash, cash equivalents and short-term investments	$ 381.7	$ 434.4
Unrealized losses (net of unrealized gains), net of tax, related to temporary decrease in value of available-for-sale securities	(0.9)
Operating Accounts
Schedule of Investments [Line Items]
Cash, cash equivalents and short-term investments	$ 21.9	$ 19.5

Financial Instruments - Fair Va

Financial Instruments - Fair Value and Gross Unrealized Losses Related to Individual Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less Than 12 Months	$ 271,347	$ 266,953
Gross Unrealized Losses, Less Than 12 Months	(1,336)	(550)
Fair Value, 12 Months Or More	70,447	5,453
Gross Unrealized Losses, 12 Months or More	(124)	(3)
Fair Value, Total	341,794	272,406
Gross Unrealized Losses, Total	(1,460)	(553)
Corporate bonds and notes
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less Than 12 Months	183,491	240,165
Gross Unrealized Losses, Less Than 12 Months	(1,162)	(535)
Fair Value, 12 Months Or More	70,447	5,453
Gross Unrealized Losses, 12 Months or More	(124)	(3)
Fair Value, Total	253,938	245,618
Gross Unrealized Losses, Total	(1,286)	(538)
Municipal bonds and notes
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less Than 12 Months	60,976	1,061
Gross Unrealized Losses, Less Than 12 Months	(81)	(1)
Fair Value, 12 Months Or More	0	0
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	60,976	1,061
Gross Unrealized Losses, Total	(81)	(1)
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less Than 12 Months		9,482
Gross Unrealized Losses, Less Than 12 Months		(1)
Gross Unrealized Losses, 12 Months or More		0
Fair Value, Total		9,482
Gross Unrealized Losses, Total		(1)
Treasury and agency notes and bills
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less Than 12 Months	26,880	16,245
Gross Unrealized Losses, Less Than 12 Months	(93)	(13)
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	26,880	16,245
Gross Unrealized Losses, Total	$ (93)	$ (13)

Financial Instruments - Estimat

Financial Instruments - Estimated Fair Value of Marketable Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Due in one year or less	$ 153,396
Due in one to two years	119,693
Due in two to three years	86,771
Estimated Fair Value	$ 359,860	$ 414,895

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details) - USD ($) $ in Millions	Aug. 09, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from disposition of business	$ 14.9	$ 17.1
Gain on discontinued operations	$ 8.7	$ 5.8	$ 7.6
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents				$ 45
Intangible asset impairment charge				16.6
Employee Severance
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents				5.9
Restructuring charges				4.7
Impairment of Long-lived Assets and Other Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents				70.9
Zhuhai | Employee Severance
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents				$ 5.9

Discontinued Operations - Resul

Discontinued Operations - Results from Discontinued Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Product and service revenues	$ 0	$ 32	$ 6,524
Total revenues	0	32	6,524
Cost of revenues	0	21	12,276
Research, development and other related costs	0	6,190	60,117
Selling, general and administrative	389	6,254	11,833
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents	(371)	(3,178)	72,280
Impairment of goodwill	0	0	6,548
Total operating expenses	18	9,287	163,054
Other income and (expense), net	0	629	572
Operating loss before taxes	(18)	(8,626)	(155,958)
Expense (benefit) from income taxes	83	(4,137)	(11,312)
Net loss from discontinued operations	$ (101)	$ (4,489)	$ (144,646)

Discontinued Operations - Curre

Discontinued Operations - Current and Non-current Asset and Current Liabilities of Discontinued Operations (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Disposal Group, Including Discontinued Operation, Classified Balance Sheet Disclosures [Abstract]
Accounts receivable and other assets, net	$ 0	$ 390
Property and equipment, net	0	0
Total assets of discontinued operations	0	390
Accrued liabilities	0	2,873
Total liabilities of discontinued operations	$ 0	$ 2,873

Fair Value - Assets Required to

Fair Value - Assets Required to be Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 359,860	$ 414,895
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	715	20,883
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	359,145	394,012
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	715	20,883
Money market funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	715	20,883
Money market funds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Money market funds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	256,182	281,754
Corporate bonds and notes | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Corporate bonds and notes | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	256,182	281,754
Corporate bonds and notes | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Municipal bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	70,703	37,215
Municipal bonds and notes | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Municipal bonds and notes | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	70,703	37,215
Municipal bonds and notes | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Treasury and agency notes and bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	26,880	41,268
Treasury and agency notes and bills | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Treasury and agency notes and bills | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	26,880	41,268
Treasury and agency notes and bills | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	5,380	33,775
Commercial paper | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Commercial paper | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	5,380	33,775
Commercial paper | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 0	$ 0

Fair Value - Measured on a Nonr

Fair Value - Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Aug. 09, 2013	Dec. 31, 2014	Dec. 31, 2015		Dec. 31, 2014
Fair Value, Assets Measured on NonRecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Proceeds from disposition of business	$ 14,900	$ 17,100
Gain on discontinued operations	$ 8,700	5,800			$ 7,600
Accumulated amortization		87,052	$ 107,676		87,052
Assets held for sale | Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on NonRecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning period			0		0
Assets transferred			0		0
Assets sold			0		0
Assets received			0		0
Balance, ending period		0	0		0
Assets included in discontinued operations and held for sale | Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on NonRecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning period			0		9,720	[1]
Assets transferred			0		1,398
Assets sold			0		(11,118)	[2]
Assets received			0		0
Balance, ending period		0	0		0
Other | Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on NonRecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning period			4,280		0
Assets transferred			0		0
Assets sold			0		0
Assets received			0		4,280
Balance, ending period		$ 4,280	4,280	[3]	$ 4,280
Accumulated amortization			$ 1,000
[1]	Comprised of assets remaining after the sale of the Micro-Optics business located in Charlotte, North Carolina, which was completed in August 2013 and assets remaining as a result of the cessation of the Company's mems|cam manufacturing activities. See Note 6 - "Discontinued Operations" for more information. These assets are carried at market value as determined by specific third party quotes.
[2]	The assets in footnote 1 above were sold in 2014. These assets sold for $17.1 million in the aggregate and resulted in a gain of $5.8 million.
[3]	This amount represents the value of the patents that were received as part of licensing settlements with customers. These assets were valued using a methodology based on an arms-length purchase price of bulk patent assets, with adjustments based on limited pick rights, the total available market, and remaining average patent life. The value above is gross and the accumulated amortization to date is $1.0 million.

Business Combinations Busines55

Business Combinations Business Combinations (Details) - USD ($) $ in Thousands		Aug. 27, 2015	Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Identified Intangible Assets [Abstract]
Goodwill			$ 10,136	[1]	$ 2,099	$ 0
Amortization of intangible assets			20,624		18,471	$ 19,269
Ziptronix, Inc
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisition purchase price		$ 39,000
Working capital assumed		1,500
Acquiree working capital		1,900
Amount of consideration withheld until certain employees fulfill length-of-employment obligations		700
Net Tangible Assets and Liabilities [Abstract]
Unbilled contract asset		3,380
Deferred tax assets and liabilities, net		(7,671)
Other accrued liabilities		(385)
Net tangible assets (liabilities)		(4,676)
Identified Intangible Assets [Abstract]
Goodwill	[2]	8,037
Total assets acquired and liabilities assumed		43,237
Total purchase price		38,561
Amortization of intangible assets			$ 5,600		$ 5,600
Ziptronix, Inc | Patents/existing technology
Identified Intangible Assets [Abstract]
Identified finite-lived intangible assets		32,300
Ziptronix, Inc | Trade name
Identified Intangible Assets [Abstract]
Identified finite-lived intangible assets		$ 1,300
Estimated useful life (in years)		8 years
Ziptronix, Inc | Customer relationships
Identified Intangible Assets [Abstract]
Identified finite-lived intangible assets		$ 1,600
Estimated useful life (in years)		2 years
Ziptronix, Inc | Minimum | Patents/existing technology
Identified Intangible Assets [Abstract]
Estimated useful life (in years)		5 years
Ziptronix, Inc | Maximum | Patents/existing technology
Identified Intangible Assets [Abstract]
Estimated useful life (in years)		8 years
[1]	This amount is included in "Other assets" on the consolidated balance sheet.
[2]	The Company does not anticipate that any of this goodwill will be deductible for tax purposes.

Business Combinations Busines56

Business Combinations Business Combinations - Pro-Forma Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2015payment	Dec. 31, 2015USD ($)		Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Business Acquisition [Line Items]
Revenues		$ 273,300		$ 278,807	$ 168,811
Net income (loss)		117,016		170,454	(185,555)
Amortization expense		20,624		18,471	$ 19,269
Ziptronix, Inc
Business Acquisition [Line Items]
Pro forma revenue		304,615	[1]	282,637
Pro forma net income		137,595	[1]	167,165
Revenues		273,300		278,807
Net income (loss)		117,016		170,454
Amortization expense		5,600		$ 5,600
Acquisition related costs		$ 3,100
Number of license fee payments | payment	1
[1]	Almost all of the revenue and earnings related to Ziptronix in this period is the result of one-time license fee payments during the three months ended March 31, 2015 (unaudited).

Goodwill and Identified Intan57

Goodwill and Identified Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2015		Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, beginning		$ 2,099		$ 0
Goodwill acquired		8,037	[1]	2,099
Goodwill, ending		$ 10,136	[2]	$ 2,099
Digitaloptics Segment
Goodwill [Roll Forward]
Impairment of goodwill	$ 6,700
[1]	For more information regarding this transaction, see Note 8 - "Business Combinations."
[2]	This amount is included in "Other assets" on the consolidated balance sheet.

Goodwill And Identified Intan58

Goodwill And Identified Intangible Assets Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Assets		$ 202,765	$ 159,977
Accumulated Amortization		(107,676)	(87,052)
Net		95,089	72,925
Amortization of intangible assets		20,624	18,471	$ 19,269
Acquired patents core technology
Finite-Lived Intangible Assets [Line Items]
Gross Assets	[1]	140,345	132,157
Accumulated Amortization	[1]	(79,128)	(62,053)
Net	[1]	61,217	70,104
Existing technology
Finite-Lived Intangible Assets [Line Items]
Gross Assets	[2]	50,620	18,700
Accumulated Amortization	[2]	(20,182)	(17,932)
Net	[2]	30,438	768
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Gross Assets		10,200	8,600
Accumulated Amortization		(7,792)	(6,569)
Net		2,408	2,031
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross Assets		1,600	520
Accumulated Amortization		(574)	(498)
Net		1,026	22
Patents
Finite-Lived Intangible Assets [Line Items]
Patents and existing technology			5,900
Patents received through litigation settlements			4,300
Ziptronix, Inc
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		5,600	$ 5,600
Ziptronix, Inc | Technology-Based Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Patents and existing technology		$ 31,700
[1]	In 2014, $5.9 million in patents were purchased and $4.3 million in patents were received through litigation settlements.
[2]	In

Goodwill And Identified Intan59

Goodwill And Identified Intangible Assets (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2015
Minimum
Finite-Lived Intangible Assets [Line Items]
Average life	2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Average life	15 years
Acquired patents core technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Average life	3 years
Acquired patents core technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Average life	15 years
Existing technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Average life	5 years
Existing technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Average life	10 years
Customer contracts | Minimum
Finite-Lived Intangible Assets [Line Items]
Average life	3 years
Customer contracts | Maximum
Finite-Lived Intangible Assets [Line Items]
Average life	9 years
Trade name | Minimum
Finite-Lived Intangible Assets [Line Items]
Average life	4 years
Trade name | Maximum
Finite-Lived Intangible Assets [Line Items]
Average life	10 years

Goodwill and Identified Intan60

Goodwill and Identified Intangible Assets - Estimated Future Amortization Expense of Intangible Assets, Excluding the In-Process Research and Development (Detail) $ in Thousands	Dec. 31, 2015USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,016	$ 23,570
2,017	21,029
2,018	18,713
2,019	10,279
2,020	6,133
Thereafter	15,365
Finite-lived intangible assets, net	$ 95,089

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Schedule of Basic and Diluted Net Loss Per Share (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Weighted average common shares outstanding	51,841	52,898	53,431
Unvested common shares subject to repurchase	(39)	(79)	(85)
Total common shares-basic	51,802	52,819	53,346
Stock awards	343	346	0
Restricted stock awards and units	441	398	0
Total common shares-diluted	52,586	53,563	53,346

Net Income (Loss) Per Share - A

Net Income (Loss) Per Share - Additional Information (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Shares of common stock excluded from the computation of net loss per share	0.1	1.5	2.8

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended			89 Months Ended	101 Months Ended
	Jun. 30, 2012	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount		$ 250,000,000				$ 250,000,000
Treasury stock, total repurchase during period (in shares)			4,901,000			8,234,000
Treasury stock, average price of share repurchased (in dollars per share)					$ 21.39	$ 27.22
Treasury stock, total cost of repurchased stock					$ 104,900,000	$ 224,100,000
Stock repurchase program, remaining amount available for repurchase		$ 25,900,000				$ 25,900,000
Dividends paid (usd per share)	$ 0.10
Cash dividends declared per share (in dollars per share)		$ 0.80	$ 0.92	$ 0.70
Performance Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, percentage of grant available to vest		0.00%
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, percentage of grant available to vest		100.00%
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		24 months
Shares reserved for grant		496,440				496,440
Maximum ownership percentage		5.00%				5.00%
Required weekly hours		20 hours
Award requisite service period		5 months
Maximum employee subscription rate		20.00%				20.00%
Purchase price of common stock, percent		85.00%
Maximum employee subscription amount		$ 25,000				$ 25,000
Rolling expiration period		24 months
2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive stock options granted to employees at exercise price		110.00%
Voting power of all classes of stock of the Company		10.00%
Expiration period		10 years
Vesting period		4 years
2003 Plan | Non employee stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive stock options granted to employees at exercise price		85.00%
2003 Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
2003 Plan | Employee stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive stock options granted to employees at exercise price		100.00%
Shares reserved for grant		3,900,000				3,900,000

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares, Beginning balance (shares)	1,616	3,917	7,099
Number of Shares, Options granted (shares)	84	220	1,204
Number of Shares, Options exercised (shares)	(465)	(1,797)	(2,031)
Number of Shares, Options cancelled / forfeited / expired (shares)	(93)	(724)	(2,355)
Number of Shares, Ending balance (shares)	1,142	1,616	3,917
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price Per Share, Beginning balance (usd per share)	$ 19.34	$ 18.37	$ 17.80
Weighted Average Exercise Price Per Share, Options granted (usd per share)	36.60	22.29	19
Weighted Average Exercise Price Per Share, Options exercised (usd per share)	19.35	18.13	16.51
Weighted Average Exercise Price Per Share, Options cancelled / forfeited / expired (usd per share)	19.04	18	18.59
Weighted Average Exercise Price Per Share, Ending balance (usd per share)	$ 20.63	$ 19.34	$ 18.37
Weighted Average Remaining Contractual Life (in years)	7 years 4 months 22 days
Aggregate Intrinsic Value	$ 11,369
Vested and expected to vest, number of shares subject to options	1,040
Vested and expected to vest, weighted average remaining contractual life (in years)	7 years 3 months 20 days
Vested and expected to vest, aggregate intrinsic value	$ 10,559
Exercisable, number of shares subject to options	502
Exercisable, weighted average remaining contractual life (in years)	6 years 6 months 8 days
Exercisable, aggregate intrinsic value	$ 5,603

Stockholders' Equity - Stock Op

Stockholders' Equity - Stock Options Outstanding and Exercisable (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2015$ / sharesshares
$12.52 - $14.91
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	$ 12.52
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 14.91
Number Outstanding (in thousands) | shares	137
Weighted Average Remaining Contractual Life (in years)	6 years 24 days
Weighted Average Exercise Price per Share	$ 14.10
Number Exercisable (in thousands) | shares	100
Weighted Average Exercise Price per Share	$ 13.92
$15.35 - $18.74
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	15.35
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 18.74
Number Outstanding (in thousands) | shares	73
Weighted Average Remaining Contractual Life (in years)	6 years 3 months 22 days
Weighted Average Exercise Price per Share	$ 16.90
Number Exercisable (in thousands) | shares	43
Weighted Average Exercise Price per Share	$ 17.03
$18.84 - $18.84
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	18.84
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 18.84
Number Outstanding (in thousands) | shares	367
Weighted Average Remaining Contractual Life (in years)	7 years 11 months 10 days
Weighted Average Exercise Price per Share	$ 18.84
Number Exercisable (in thousands) | shares	148
Weighted Average Exercise Price per Share	$ 18.84
$18.89 - $19.08
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	18.89
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 19.08
Number Outstanding (in thousands) | shares	118
Weighted Average Remaining Contractual Life (in years)	7 years 8 months 15 days
Weighted Average Exercise Price per Share	$ 19.02
Number Exercisable (in thousands) | shares	73
Weighted Average Exercise Price per Share	$ 19.04
$19.33 - $20.01
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	19.33
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 20
Number Outstanding (in thousands) | shares	68
Weighted Average Remaining Contractual Life (in years)	6 years 11 months 9 days
Weighted Average Exercise Price per Share	$ 19.68
Number Exercisable (in thousands) | shares	29
Weighted Average Exercise Price per Share	$ 19.61
$20.43 - $20.43
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	20.43
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 20.43
Number Outstanding (in thousands) | shares	134
Weighted Average Remaining Contractual Life (in years)	7 years 5 months 19 days
Weighted Average Exercise Price per Share	$ 20.43
Number Exercisable (in thousands) | shares	47
Weighted Average Exercise Price per Share	$ 20.43
$20.63 - $26.34
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	20.63
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 26.34
Number Outstanding (in thousands) | shares	128
Weighted Average Remaining Contractual Life (in years)	7 years 2 months 7 days
Weighted Average Exercise Price per Share	$ 23.50
Number Exercisable (in thousands) | shares	40
Weighted Average Exercise Price per Share	$ 24.44
$28.20 - $44.27
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	28.20
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 44.27
Number Outstanding (in thousands) | shares	117
Weighted Average Remaining Contractual Life (in years)	7 years 11 months 5 days
Weighted Average Exercise Price per Share	$ 35.27
Number Exercisable (in thousands) | shares	24
Weighted Average Exercise Price per Share	$ 33.03
$12.52 - $44.27
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	12.52
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 44.27
Number Outstanding (in thousands) | shares	1,142
Weighted Average Remaining Contractual Life (in years)	7 years 4 months 22 days
Weighted Average Exercise Price per Share	$ 20.63
Number Exercisable (in thousands) | shares	502
Weighted Average Exercise Price per Share	$ 19.04

Stockholders' Equity - Summar66

Stockholders' Equity - Summary of Restricted Stock Awards and Units (Detail) - Restricted Stock - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock awards and units, beginning balance (shares)	1,135	1,085	831
Restricted stock awards and units, granted (shares)	562	531	954
Restricted stock awards and units, vested / earned (shares)	(384)	(289)	(289)
Restricted stock awards and units, cancelled / forfeited (shares)	(104)	(192)	(411)
Restricted stock awards and units, ending balance (shares)	1,209	1,135	1,085
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted average grant date fair value per share of restricted stock and units, beginning balance (usd per share)	$ 20.30	$ 18.46	$ 16.36
Weighted average grant date fair value per share of restricted stock and units, granted (usd per share)	39.77	22.41	19.26
Weighted average grant date fair value per share of restricted stock and units, vested / earned (usd per share)	20.17	18.85	17.45
Weighted average grant date fair value of restricted stock and units, cancelled / forfeited (usd per share)	21.54	17.91	16.77
Weighted average grant date fair value per share of restricted stock and units, ending balance (usd per share)	$ 29.28	$ 20.30	$ 18.46
Number of Shares Subject to Time- based Vesting
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock awards and units, beginning balance (shares)	502	737	715
Restricted stock awards and units, granted (shares)	472	222	596
Restricted stock awards and units, vested / earned (shares)	(240)	(289)	(262)
Restricted stock awards and units, cancelled / forfeited (shares)	(44)	(168)	(312)
Restricted stock awards and units, ending balance (shares)	690	502	737
Number of Shares Subject to Performance- based Vesting
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock awards and units, beginning balance (shares)	633	348	116
Restricted stock awards and units, granted (shares)	90	309	358
Restricted stock awards and units, vested / earned (shares)	(144)	0	(27)
Restricted stock awards and units, cancelled / forfeited (shares)	(60)	(24)	(99)
Restricted stock awards and units, ending balance (shares)	519	633	348

Stock-Based Compensation Expe67

Stock-Based Compensation Expense - Effect of Recording Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 11,517	$ 13,269	$ 13,503
Tax effect on stock-based compensation expense	(3,107)	(1,968)	0
Net effect on net income (loss)	8,410	11,301	13,503
Cost of revenues
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	0	18	50
Research, development and other related costs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	4,005	2,823	3,591
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 7,512	$ 10,428	$ 9,862

Stock-Based Compensation Expe68

Stock-Based Compensation Expense - Categorized by Equity Components (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 11,517	$ 13,269	$ 13,503
Employee stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	2,676	3,336	7,815
Restricted stock awards and units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	8,232	9,322	4,317
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 609	$ 611	$ 1,371

Stock-Based Compensation Expe69

Stock-Based Compensation Expense - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Grants in period, net of forfeitures	84	220	1,204
Grants in period, estimated fair value (usd per share)	$ 8.57	$ 5.71	$ 6.82
Total intrinsic value of options exercised	$ 9.3	$ 13.3	$ 6.8
Unrecognized stock-based compensation balance after estimated forfeitures related to unvested stock options	$ 3	$ 5
Estimated weighted average amortization period	2 years 2 months	2 years 7 months 6 days
Issuance of common stock in connection with employee common stock purchase plan (in shares)	77	137	288
Stock-based compensation expense, incremental compensation cost	$ 0.3	$ (0.3)	$ 3
Black Scholes Option Pricing Model
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expected life (in years)	2 years
Restricted Stock Awards And Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Restricted stock awards, total fair value	$ 7.7	5.5	$ 5
Unrecognized stock-based compensation balance after estimated forfeitures related to unvested stock options	$ 11.1	$ 5.4
Estimated weighted average amortization period	2 years 6 days	2 years

Stock-Based Compensation Expe70

Stock-Based Compensation Expense - Schedule of Assumptions Used to Value Options Granted (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life (in years)	3 years 9 months	4 years 11 months	5 years
Dividend yield			2.10%
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life (in years)	2 years	2 years	2 years
Minimum | Stock Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate	1.10%	1.60%	0.80%
Dividend yield	2.10%	3.40%
Expected volatility	34.00%	37.30%	44.20%
Minimum | Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate	0.40%	0.30%	0.30%
Dividend yield	2.10%	3.40%	2.30%
Expected volatility	29.70%	27.60%	38.90%
Maximum | Stock Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate	1.40%	1.80%	1.80%
Dividend yield	2.90%	4.10%	3.80%
Expected volatility	35.60%	41.40%	59.50%
Maximum | Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate	0.70%	0.50%	0.40%
Dividend yield	3.40%	3.50%	3.80%
Expected volatility	30.00%	30.60%	40.60%

Income Taxes - Components Of In

Income Taxes - Components Of Income (loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
U.S.	$ 151,862	$ 155,757	$ (36,096)
Foreign	13,772	11,489	31,047
Income (loss) before taxes from continuing operations	$ 165,634	$ 167,246	$ (5,049)

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. federal	$ 2,737	$ (797)	$ (4,350)
Foreign	26,275	31,824	14,967
State and local	319	8	8
Total current	29,331	31,035	10,625
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. federal	23,478	(38,732)	25,235
Foreign	(4,138)	0	0
State and local	(154)	0	0
Total deferred	19,186	(38,732)	25,235
Provision for income taxes	$ 48,517	$ (7,697)	$ 35,860

Income Taxes - Components Of Co

Income Taxes - Components Of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets
Net operating loss carryforwards	$ 15,268	$ 15,053
Research tax credit	5,438	8,332
Foreign tax credit	5,587	22,885
Expenses not currently deductible	12,453	15,096
Basis difference in fixed and intangible assets	4,227	7,090
Gross deferred tax assets	42,973	68,456
Valuation allowance	(13,852)	(27,087)
Net deferred tax assets	29,121	41,369
Deferred tax liabilities
Acquired intangible assets, foreign	(13,597)	(276)
Unremitted earnings of foreign subsidiaries	(130)	(187)
Net deferred tax assets	$ 15,394	$ 40,906

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 15,268	$ 15,053
Valuation allowance	13,852	27,087
Change in valuation	13,200
Reduction in operating loss carryforward	45,000
Undistributed foreign earnings	100
Unrecognized tax benefits	3,071	2,734	$ 5,031	$ 4,831
Unrecognized tax benefits that would impact the effective income tax rate	2,400	1,100
Interest and tax penalties related to unrecognized tax benefits	500	$ 500
Minimum
Income Tax Contingency [Line Items]
Expected reduction resulting from lapse of applicable statute of limitations	200
State
Income Tax Contingency [Line Items]
Operating loss carryforwards	64,800
Tax credit carryforward	5,400
Federal
Income Tax Contingency [Line Items]
Operating loss carryforwards	15,000
Tax credit carryforward	300
Foreign
Income Tax Contingency [Line Items]
Tax credit carryforward	1,300
Foreign Tax Credit Carryforwards
Income Tax Contingency [Line Items]
Tax credit carryforward	$ 5,600

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Statutory U.S. Federal Income Tax Rate to Company's Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	35.00%	35.00%	(35.00%)
State, net of federal benefit	0.00%	0.00%	0.10%
Stock-based compensation expense	0.50%	0.30%	4.00%
Tax exempt interest	(0.10%)	(0.00%)	(2.60%)
Research tax credit and other	(0.30%)	(0.30%)	(11.20%)
Foreign withholding tax	15.70%	18.80%	292.50%
Foreign losses not benefited	0.00%	0.00%	(32.80%)
Foreign tax rate differential	(2.80%)	(2.20%)	(7.40%)
Foreign tax credit	(15.30%)	(17.90%)	(0.00%)
Change in valuation allowance	(3.00%)	(38.70%)	491.10%
Others	(0.40%)	0.40%	11.50%
Total	29.30%	(4.60%)	710.20%

Income Taxes - Reconciliation76

Income Taxes - Reconciliation Of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Total unrecognized tax benefits at January 1	$ 2,734	$ 5,031	$ 4,831
Gross increases and decreases due to tax positions taken in prior periods	699	(193)	18
Gross increases and decreases due to tax positions taken in the current period	103	150	290
Gross increases and decreases due to settlements with taxing authorities	0	(2,023)	(87)
Gross increases and decreases due to lapses in applicable statutes of limitations	(465)	(231)	(21)
Total unrecognized tax benefits at December 31	$ 3,071	$ 2,734	$ 5,031

Commitments And Contingencies -

Commitments And Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Rent under operating lease agreement	$ 2.1	$ 3.6	$ 3.9

Commitments And Contingencies78

Commitments And Contingencies - Schedule of Future Minimum Lease Payments and Purchase Obligations (Detail) $ in Thousands	Dec. 31, 2015USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,016	$ 2,317
2,017	2,232
2,018	2,269
2,019	2,103
2,020	1,645
Thereafter	0
Lease Obligations, Total	$ 10,566

Segment And Geographic Inform79

Segment And Geographic Information - Schedule of Geographic Revenue Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)customer	Dec. 31, 2014USD ($)customer	Dec. 31, 2013USD ($)customer
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign revenues	$ 273,300	$ 278,807	$ 168,811
Percentage of revenue	100.00%	100.00%	100.00%
Number of major customers each accounting for 10% or more of total revenues | customer	4	3	3
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign revenues	$ 98,428	$ 39,448	$ 41,878
Percentage of revenue	36.00%	14.00%	25.00%
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign revenues	$ 87,527	$ 98,100	$ 64,092
Percentage of revenue	32.00%	35.00%	37.00%
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign revenues	$ 57,049	$ 100,049	$ 2,596
Percentage of revenue	21.00%	36.00%	2.00%
Other Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign revenues	$ 15,225	$ 28,979	$ 10,103
Percentage of revenue	6.00%	10.00%	6.00%
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign revenues	$ 9,409	$ 10,014	$ 48,481
Percentage of revenue	3.00%	4.00%	29.00%
Europe and other
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign revenues	$ 5,662	$ 2,217	$ 1,661
Percentage of revenue	2.00%	1.00%	1.00%

Segment And Geographic Inform80

Segment And Geographic Information - Schedule of Property and Equipment, Net, by Geographical Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Property and equipment, net	$ 3,748	$ 4,322	$ 9,481
U.S.
Segment Reporting Information [Line Items]
Property and equipment, net	3,219	3,802	4,725
Europe And Other
Segment Reporting Information [Line Items]
Property and equipment, net	529	520	931
Taiwan
Segment Reporting Information [Line Items]
Property and equipment, net	0	0	2,394
Israel
Segment Reporting Information [Line Items]
Property and equipment, net	$ 0	$ 0	$ 1,431

Restructuring, Impairment of 81

Restructuring, Impairment of Long-Lived Assets And Other Charges And Gain on Sale of Patents - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents		$ 45
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents		5.9
Impairment of Long-lived Assets and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents		$ 70.9
Abandonment of Patents and Technology
Restructuring Cost and Reserve [Line Items]
Restructuring, impairment of long-lived assets and other charges and gain on sale of patents	$ 1.5
Proceeds from Sale of Intangible Assets	$ 11.9

Benefit Plan (Details)

Benefit Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Employers Contribution To Retirement Savings Plan	$ 0.4	$ 0.4	$ 0.9

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Jan. 27, 2016	Jan. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Subsequent Event [Line Items]
Cash dividends declared per share (in dollars per share)			$ 0.80	$ 0.92	$ 0.70
Subsequent Event
Subsequent Event [Line Items]
Cash dividends declared per share (in dollars per share)	$ 0.20
Stock Repurchase Program, Increase in Authorized Amount		$ 200

Schedule II Valuation and Qua84

Schedule II Valuation and Qualifying (Details) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 27,087	$ 91,130	$ 14,583
Charged (Credited) to Expenses	(6,485)	(64,043)	76,547
Charged (Credited) to Other Accounts	(6,750)	0	0
Balance at End of Year	$ 13,852	$ 27,087	$ 91,130