Cavium (CAVM) 10-K 22 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2015	Feb. 16, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	CAVM
Entity Registrant Name	CAVIUM, INC.
Entity Central Index Key	1,175,609
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		57,299,071
Entity Public Float			$ 3.7

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 134,646	$ 131,718
Accounts receivable, net of allowances of $1,468 and $1,142, respectively	68,742	48,199
Inventories	47,009	51,922
Prepaid expenses and other current assets	10,231	9,130
Total current assets	260,628	240,969
Property and equipment, net	64,677	56,963
Intangible assets, net	35,492	37,644
Goodwill	71,478	71,478
Other assets	1,718	1,806
Total assets	433,993	408,860
Current liabilities:
Accounts payable	27,489	26,447
Other accrued expenses and other current liabilities	9,443	7,782
Deferred revenue	6,316	6,285
Capital lease and technology license obligations	20,608	23,002
Total current liabilities	63,856	63,516
Capital lease and technology license obligations, net of current portion	9,858	22,894
Deferred tax liability	3,417	2,836
Other non-current liabilities	2,962	2,931
Total liabilities	$ 80,093	$ 92,177
Commitments and contingencies (Note 12)
Stockholders' equity
Preferred stock, par value $0.001: 10,000,000 shares authorized; no shares issued and outstanding
Common stock, par value $0.001: 200,000,000 shares authorized; 56,259,252 and 54,458,288 shares issued and outstanding, respectively	$ 56	$ 54
Additional paid-in capital	543,256	488,981
Accumulated deficit	(189,412)	(172,352)
Total stockholders' equity	353,900	316,683
Total liabilities and stockholders' equity	$ 433,993	$ 408,860

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Allowances for accounts receivable	$ 1,468	$ 1,142
Preferred stock, par value	$ 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	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	56,259,252	54,458,288
Common stock, shares outstanding	56,259,252	54,458,288

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net revenue	$ 100,942	$ 105,063	$ 104,961	$ 101,778	$ 101,223	$ 97,833	$ 90,681	$ 83,241	$ 412,744	$ 372,978	$ 303,993
Cost of revenue	34,092	36,203	37,673	35,799	38,402	35,710	33,897	30,350	143,767	138,359	114,679
Gross profit	66,850	68,860	67,288	65,979	62,821	62,123	56,784	52,891	268,977	234,619	189,314
Operating expenses:
Research and development	47,764	45,367	52,225	58,422	55,108	40,459	38,834	37,289	203,778	171,690	134,596
Sales, general and administrative	19,397	18,522	20,336	20,671	19,314	18,141	17,017	15,932	78,926	70,404	64,088
Total operating expenses	67,161	63,889	72,561	79,093	74,422	58,600	55,851	53,221	282,704	242,094	198,684
Loss from operations	(311)	4,971	(5,273)	(13,114)	(11,601)	3,523	933	(330)	(13,727)	(7,475)	(9,370)
Other expense, net:
Interest expense	(227)	(216)	(388)	(410)	(293)	(387)	(333)	(459)	(1,241)	(1,472)	(1,502)
Change in estimated fair value of notes payable and other						(103)	(13,927)	(858)		(14,888)
Other, net	(138)	(173)	(33)	(66)	(313)	(116)	(53)	135	(410)	(347)	(879)
Total other expense, net	(365)	(389)	(421)	(476)	(606)	(606)	(14,313)	(1,182)	(1,651)	(16,707)	(2,381)
Loss before income taxes	(676)	4,582	(5,694)	(13,590)	(12,207)	2,917	(13,380)	(1,512)	(15,378)	(24,182)	(11,751)
Provision for income taxes	354	366	661	301	268	811	311	243	1,682	1,633	1,937
Net loss	(1,030)	4,216	(6,355)	(13,891)	(12,475)	2,106	(13,691)	(1,755)	(17,060)	(25,815)	(13,688)
Net loss attributable to non-controlling interest					(444)	(3,327)	(2,647)	(4,102)		(10,520)	(10,723)
Net loss attributable to the Company	$ (1,030)	$ 4,216	$ (6,355)	$ (13,891)	$ (12,031)	$ 5,433	$ (11,044)	$ 2,347	$ (17,060)	$ (15,295)	$ (2,965)
Earnings per share attributable to the Company:
Net loss per common share, basic	$ (0.02)	$ 0.08	$ (0.11)	$ (0.25)	$ (0.22)	$ 0.10	$ (0.21)	$ 0.04	$ (0.31)	$ (0.29)	$ (0.06)
Shares used in computing basic net loss per common share									55,589	53,451	51,596
Net loss per common share, diluted	$ (0.02)	$ 0.07	$ (0.11)	$ (0.25)	$ (0.22)	$ 0.10	$ (0.21)	$ 0.04	$ (0.31)	$ (0.29)	$ (0.06)
Shares used in computing diluted net loss per common share									55,589	53,451	51,596

Consolidated Statements of Stoc

Consolidated Statements of Stockholders Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Non-controlling Interest
Beginning Balance at Dec. 31, 2012	$ 243,062	$ 51	$ 398,133	$ (154,092)	$ (1,030)
Beginning Balance, Shares at Dec. 31, 2012		50,630,991
Common stock issued in connection with exercises of stock options	10,827	$ 1	10,826
Common stock issued in connection with exercises of stock options, Shares		723,047
Common stock issued in connection with vesting of restricted stock units	1	$ 1
Common stock issued in connection with vesting of restricted stock units, Shares		867,213
Stock-based compensation	34,629		34,629
Net loss	(13,688)			(2,965)	(10,723)
Ending Balance at Dec. 31, 2013	274,831	$ 53	443,588	(157,057)	(11,753)
Ending Balance, Shares at Dec. 31, 2013		52,221,251
Common stock issued in connection with exercises of stock options	15,211	$ 1	15,210
Common stock issued in connection with exercises of stock options, Shares		1,082,914
Common stock issued in connection with vesting of restricted stock units, Shares		1,154,123
Stock-based compensation	52,456		52,456
Settlement of non-controlling interest			(22,273)		22,273
Net loss	(25,815)			(15,295)	$ (10,520)
Ending Balance at Dec. 31, 2014	316,683	$ 54	488,981	(172,352)
Ending Balance, Shares at Dec. 31, 2014		54,458,288
Common stock issued in connection with exercises of stock options	9,608	$ 1	9,607
Common stock issued in connection with exercises of stock options, Shares		685,439
Common stock issued in connection with vesting of restricted stock units	1	$ 1
Common stock issued in connection with vesting of restricted stock units, Shares		1,115,525
Stock-based compensation	48,298		48,298
Payments to common shareholders of Xpliant	(3,630)		(3,630)
Net loss	(17,060)			(17,060)
Ending Balance at Dec. 31, 2015	$ 353,900	$ 56	$ 543,256	$ (189,412)
Ending Balance, Shares at Dec. 31, 2015		56,259,252

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 loss	$ (17,060)	$ (25,815)	$ (13,688)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation expense	48,297	52,459	34,598
Depreciation and amortization	42,442	34,087	40,993
Deferred income taxes	663	385	743
Change in estimated fair value of notes payable and other		14,888
Gain on sale of held for sale assets			(747)
(Gain) loss on disposal of property and equipment	129	(115)	71
Gain on disposition of certain consumer product assets	(400)	(1,000)	(1,000)
Changes in assets and liabilities:
Accounts receivable, net	(20,543)	(4,563)	(10,069)
Inventories	4,914	(6,157)	788
Prepaid expenses and other current assets	(2,101)	(1,589)	(1,321)
Other assets	(9)	(433)	42
Accounts payable	(220)	2,056	7,685
Deferred revenue	31	(2,384)	(4,275)
Accrued expenses and other current and non-current liabilities	1,706	(1,205)	2,014
Net cash provided by operating activities	57,849	60,614	55,834
Cash flows from investing activities:
Purchases of property and equipment	(35,826)	(17,994)	(8,806)
Purchases of intangible assets	(6,440)	(6,919)	(3,833)
Cash payment to common shareholders of Xpliant	(3,630)
Proceeds received from sale of held for sale assets			3,350
Proceeds received from disposition of certain consumer product assets	400	1,000	1,000
Sale (purchase) of short-term investment	1,000	(1,000)
Net cash used in investing activities	(44,496)	(24,913)	(8,289)
Cash flows from financing activities:
Proceeds from issuance of common stock upon exercise of options	9,609	15,211	10,827
Principal payment of capital lease and technology license obligations	(20,034)	(18,557)	(15,893)
Proceeds from notes payable and other from non-controlling interest		1,400	9,500
Payment of notes payable and other to non-controlling interest		(29,800)	(1,000)
Net cash provided by (used in) financing activities	(10,425)	(31,746)	3,434
Net increase in cash and cash equivalents	2,928	3,955	50,979
Cash and cash equivalents, beginning of period	131,718	127,763	76,784
Cash and cash equivalents, end of period	134,646	131,718	127,763
Supplemental disclosures of cash flow information:
Cash paid for interest	1,273	1,812	1,242
Cash paid for taxes	958	1,133	1,335
Unpaid capital expenditures included in accounts payable and other accrued expenses and other current liabilities
Supplemental disclosures of cash flows from investing and financing activities:
Property and equipment and intangible assets acquired	2,335	1,188	264
Unpaid capital expenditures included in capital lease and technology license obligations
Supplemental disclosures of cash flows from investing and financing activities:
Property and equipment and intangible assets acquired	$ 4,157	$ 30,443	$ 5,860

Organization and Significant Ac

Organization and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Significant Accounting Policies	1. Organization and Significant Accounting Policies Organization Cavium, Inc., (the “Company”), was incorporated in the state of California on November 21, 2000 and was reincorporated in the state of Delaware effective February 6, 2007. The Company designs, develops and markets semiconductor processors for intelligent and secure networks. Basis of Consolidation The consolidated financial statements include the accounts of Cavium, Inc. and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Prior to the closing of the acquisition of Xpliant, Inc. (“Xpliant”) in April 2015 as discussed in Note 5 of Notes to Consolidated Financial Statements, the Company accounted for Xpliant as a variable interest entity, or VIE. Under the accounting principles generally accepted in the United States of America, or US GAAP, a VIE is required to be consolidated by its primary beneficiary. The primary beneficiary is the party that absorbs a majority of the VIE’s anticipated losses and/or a majority of the expected returns. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in its consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and on various other assumptions it believes to be reasonable under the circumstances, the results of which form the basis of making judgments about the carrying values of assets and liabilities. Actual results could differ from those estimates. Revenue Recognition The Company primarily derives its revenue from sales of semiconductor products to original contract manufacturers, or OEM, or through OEM’s contract manufacturers or distributors. To a lesser extent, the Company also derive revenue from licensing software and related maintenance and support and from professional service arrangements. The Company recognizes revenue when (i) persuasive evidence of a binding arrangement exists; (ii) delivery has occurred or service has been rendered; (iii) the price is deemed fixed or determinable and free of contingencies and significant uncertainties; and (iv) collectibility is reasonably assured. The Company records a reduction in revenue for provision for estimated sales returns in the same period the related revenues are recorded. These estimates are based on historical patterns of return, analysis of credit memo data and other known factors at the time. Revenue is recognized upon shipment to distributors with limited rights of returns and price protection if the Company concludes that it can reasonably estimate the credit for returns and price adjustments issuable. The Company records an estimated allowance, at the time of shipment, based on the Company’s historical patterns of returns and pricing credit of sales recognized upon shipment. Credits issued to distributors or other customers have historically not been material. The inventory at these distributors at the end of the period may fluctuate from time to time mainly due to the OEM production ramps and/or new customer demands. Software arrangements typically include time-based licenses for 12 months with related support. The Company does not sell support separately, therefore, revenue from software arrangements is recognized ratably over the support period. The software arrangement may also include professional services, and these services may be purchased separately. Professional services engagements are billed on either a fixed-fee or time-and-materials basis. For fixed-fee arrangements, professional services revenue is recognized under the proportional performance method, with the associated costs included in cost of revenue. The Company estimates the proportional performance of the arrangements based on an analysis of progress toward completion. The Company periodically evaluates the actual status of each project to ensure that the estimates to complete each contract remain accurate, and a loss is recognized when the total estimated project cost exceeds project revenue. If the amount billed exceeds the amount of revenue recognized, the excess amount is recorded as deferred revenue. Revenue recognized in any period is dependent on progress toward completion of projects in progress. To the extent we are unable to estimate the proportional performance, revenue is recognized on a completed performance basis. Revenue for time-and-materials engagements is recognized as the effort is incurred. Accounting for Stock-Based Compensation The Company applies the fair value recognition provisions of stock-based compensation. The Company recognizes the fair value of the awards on a straight-line basis over its vesting periods. The Company estimates the grant date fair value of stock options using the Black-Scholes option valuation model. The Black-Scholes option-pricing model used to determine the fair value of stock options requires various subjective assumptions, including expected volatility, expected term and the risk-free interest rates. The stock price volatility assumption is estimated using the Company’s historical stock price volatility. The Company uses the simplified method as permitted by the provisions on stock-based compensation to estimate the expected term since it has no sufficient history of weighted average period from the date of grant to exercise, cancellation, or expiration. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. For all restricted stock unit, or RSU, grants other than RSU grants with market condition, the fair value of the RSU grant is based on the market price of the Company’s common stock on the date of grant. For performance-based RSU grants, the Company evaluates the probability of achieving the milestones for each of the outstanding performance-based RSU grants at each reporting period and updates the related stock-based compensation expense. The fair value of market-based RSUs is determined using the Monte Carlo simulation method which takes into account multiple input variables that determine the probability of satisfying the market conditions stipulated in the award. This method requires the input of assumptions, including the expected volatility of the Company’s common stock, and a risk-free interest rate, similar to assumptions used in determining the fair value of the stock option grants discussed above. The grant date fair value of RSUs, less estimated forfeitures, is recorded on a straight-line basis, over the vesting period. Income Taxes The Company accounts for income taxes under the asset and liability method. Under this method, deferred tax assets, including those related to tax loss carryforwards and credits, and liabilities are determined based on the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation allowance is recorded to reduce deferred tax assets when management cannot conclude that it is more-likely-than-not that the net deferred tax asset will be recovered. The valuation allowance is determined by assessing both positive and negative evidence to determine whether it is more-likely-than-not that deferred tax assets are recoverable; such assessment is required on a jurisdiction-by-jurisdiction basis. The Company recognizes uncertain tax positions when it meets a more-likely-than-not threshold. The Company recognizes potential accrued interest and penalties related to unrecognized tax benefits as income tax expense. Business Combinations The Company accounts for business combinations using the purchase method of accounting. The Company determines the recognition of intangible assets based on the following criteria: (i) the intangible asset arises from contractual or other rights; or (ii) the intangible is separable or divisible from the acquired entity and capable of being sold, transferred, licensed, returned or exchanged. In accordance with the guidance provided under business combinations, the Company allocates the purchase price of business combinations to the tangible assets, liabilities and intangible assets acquired, including in-process research and development, or IPR&D, based on their estimated fair values. The excess purchase price over those fair values is recorded as goodwill. The Company’s valuation assumption of acquired net assets requires significant estimates, especially with respect to intangible assets. Critical estimates in valuing certain intangible assets includes future expected cash flows from customer contracts, customer lists, and distribution agreements and acquired developed technologies, expected costs to develop IPR&D into commercially viable products, estimated cash flows from projects when completed and discount rates. The Company estimates the fair value based upon assumptions the Company believes to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. Other estimates associated with the accounting for acquisitions may change as additional information becomes available regarding the assets acquired and liabilities assumed. Acquisition-related costs, including advisory, legal, accounting, valuation and other costs, are expensed in the periods in which the costs are incurred. The results of operations of acquired businesses are included in the consolidated financial statements from the acquisition date. Valuation of Goodwill and intangible assets Goodwill is measured as the excess of the cost of an acquisition over the sum of the amounts assigned to tangible and identifiable intangible assets and liabilities assumed. The Company evaluates goodwill for impairment at its single reporting unit level at least on an annual basis in the fourth quarter of the calendar year or whenever events and changes in circumstances suggest that the carrying amount may not be recoverable from its estimated future cash flow. The Company performs a qualitative assessment to determine if any events have occurred or circumstances exist that would indicate that it is more-likely-than-not that a goodwill impairment exists. If any indicators exist based on the qualitative analysis that it is more-likely-than-not that a goodwill impairment exists, the quantitative test is required. Otherwise, no further testing is required. The Company reviews long-lived assets, including property and equipment and intangible assets, for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets (or asset group) may not be fully recoverable. Whenever events or changes in circumstances suggest that the carrying amount of long-lived assets may not be recoverable, the Company estimates the future cash flows expected to be generated by the assets (or asset group) from its use or eventual disposition. If the sum of the expected future cash flows is less than the carrying amount of those assets, the Company recognizes an impairment loss based on the excess of the carrying amount over the fair value of the assets. Significant management judgment is required in the grouping of long-lived assets and forecasts of future operating results that are used in the discounted cash flow method of valuation. Inventories Inventories consist of work-in-process and finished goods. Inventories not related to an acquisition are stated at the lower of cost (determined using the first-in, first-out method), or market value (estimated net realizable value). Inventories from acquisitions are stated at fair value at the date of acquisition. The Company writes down excess and obsolete inventory based on its age and forecasted demand, generally over a 12 month period, which includes estimates taking into consideration the Company’s outlook on uncertain events such as market and economic conditions, technology changes, new product introductions and changes in strategic direction. Actual demand may differ from forecasted demand and such differences may have a material effect on recorded inventory values. Inventory write-downs are not reversed until the related inventories have been sold or scrapped. Property and Equipment Property and equipment are stated at cost and depreciated over their estimated useful lives using the straight-line method. Leasehold improvements are amortized over the shorter of estimated useful lives or unexpired lease term. Additions and improvements that increase the value or extend the life of an asset are capitalized. Upon retirement or sale, the cost of assets disposed of and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is credited or charged to income. Ordinary repairs and maintenance costs are expensed as incurred. Estimated Software, design tools, computer and other equipment 1 to 5 years Test equipment and mask costs 1 to 3 years Furniture, office equipment and leasehold improvements 1 to 5 years The Company capitalizes the cost of fabrication masks that are reasonably expected to be used during production manufacturing. Such amounts are included within property and equipment and are depreciated over a period of 12 to 24 months and recorded as a component of cost of revenue. If the Company does not reasonably expect to use the fabrication mask during production manufacturing, the related mask costs are expensed to research and development in the period in which the costs are incurred. The Company leases certain design tools under capital lease and certain financing arrangements which are included in property and equipment. The Company also capitalizes acquired internally used software in property and equipment. Subsequent additions, modifications or upgrades to internally used software are capitalized to the extent it provides additional usage or functionality. Cash and Cash Equivalents The Company considers all highly liquid investments with an original or remaining maturity of 90 days or less at the date of purchase to be cash equivalents. Cash equivalents consist of an investment in a money market fund. Allowance for Doubtful Accounts The Company reviews its allowance for doubtful accounts by assessing individual accounts receivable over a specific age and amount. The Company’s allowance for doubtful accounts were not significant as of December 31, 2015 and 2014. Concentration of Risk The Company’s products are currently manufactured, assembled and tested by third-party contractors in Asia. There are no long-term agreements with any of these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products for a substantial period of time, which could have a material adverse effect on the Company’s business, financial condition and results of operations. Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash, cash equivalents and accounts receivable. The Company deposits cash with credit worthy financial institutions. The Company has not experienced any losses on its deposits of cash. Management believes that the financial institutions are reputable and, accordingly, minimal credit risk exists. The Company’s cash equivalents are invested in a money market fund. The Company follows an established investment policy and set of guidelines to monitor, manage and limit the Company’s exposure to interest rate and credit risk. The policy sets forth credit quality standards and limits the Company’s exposure to any one issuer, as well as the maximum exposure to various asset classes. A majority of the Company’s accounts receivable are derived from customers headquartered in the United States. The Company performs ongoing credit evaluations of its customers’ financial condition and, generally, requires no collateral from its customers. The Company provides an allowance for doubtful accounts receivable based upon the expected collectability of accounts receivable. Summarized below are individual customers whose accounts receivable balances were 10% or higher of the consolidated gross receivable: As of December 31, 2015 2014 Percentage of gross accounts receivable Customer A 16% 12% Customer B 20% 21% Customer C * 11% * Represents less than 10% of the gross accounts receivable for the respective period end. OEM Customers B, D and E together accounted for 42.9% and 44.4% of the Company’s net revenue in 2015 and 2014, respectively. OEM Customer D accounted for 18.6% of the Company’s net revenue in 2013. No other customer accounted for more than 10% of the Company’s net revenue in 2015, 2014 and 2013. Deferred revenue The Company records deferred revenue for customer billings and advance payments received from customers before the performance obligations have been completed and/or services have been performed for products and/or service related agreements. The Company had a distribution agreement with a distributor which was accounted as a sell-through distributor. The distribution agreement was terminated effective May 2014. The Company recorded deferred revenue, net of deferred costs on shipments to this sell-through distributor. Warranty Accrual The Company’s products are generally subject to a one-year warranty period. The Company provides for the estimated future costs of replacement upon shipment of the product as cost of revenue. The warranty accrual is estimated based on cost of historical claims compared to associated historical product cost. Research and Development Research and development costs are expensed as incurred and primarily include personnel costs, prototype expenses, which include the cost of fabrication mask costs not reasonably expected to be used in production manufacturing, and allocated facilities costs as well as depreciation of equipment used in research and development. Advertising The Company expenses advertising costs as incurred. Advertising expenses were $2.5 million, $1.8 million and $1.4 million for the years ended December 31, 2015, 2014 and 2013, respectively. Operating Leases The Company recognizes rent expense on a straight-line basis over the term of the lease. The difference between rent expense and rent paid is recorded as deferred rent in accrued expenses and other current and non-current liabilities on the consolidated balance sheets. Other Comprehensive Income (Loss) Comprehensive income (loss) includes all changes in equity that are not the result of transactions with stockholders. There were no components of comprehensive income (loss) which were excluded from the net income (loss) for the years ended December 31, 2015, 2014 and 2013, and, therefore, no separate statement of comprehensive income (loss) has been presented. Foreign Currency Remeasurement The Company uses the United States dollar as the functional currency for its subsidiaries. Assets and liabilities denominated in non-U.S. dollars are remeasured into U.S. dollars at end-of-period exchange rates for monetary assets and liabilities, and historical exchange rates for nonmonetary assets and liabilities. Net revenue and expenses are remeasured at average exchange rates in effect during each period, except for those revenue, cost of sales and expenses related to the nonmonetary assets and liabilities, which are remeasured at historical exchange rates. The aggregate foreign exchange gains and losses, which are included in other, net in the consolidated statements of operations were not material for the years ended December 31, 2015, 2014 and 2013. Recent Accounting Pronouncements In November 2015, the Financial Accounting Standards Board, or FASB, issued guidance to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax assets and liabilities be classified as non-current in a classified statement of financial position. The amendments in this update will apply to all entities that present a classified statement of financial position. The current requirement that deferred tax assets and liabilities of a tax paying component of an entity be offset and presented as a single amount is not affected by the amendments to this update. T he amendments to this update are effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the beginning of an interim or annual reporting period. The Company adopted this guidance as of December 31, 2015. This guidance did not have a material impact on the Company’s consolidated financial statements. In September 2015, the FASB issued an update to the business combinations standards simplifying the accounting for measurement-period adjustments. The amendments in this update require that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The amendments in this update require that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. The amendments in this update require an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The update is effective for interim and annual periods beginning after December 15, 2015. The amendments in this update should be applied prospectively to adjustments to provisional amounts that occur after the effective date of this update with earlier application permitted for financial statements that have not been issued. The Company does not expect that this guidance will have a material impact on its consolidated financial statements. In July 2015, the FASB issued guidance to simplify the measurement of inventory. The updated standard more closely aligns the measurement of inventory with that of International Financial Reporting Standards and amends the measurement standard from lower of cost or market to lower of cost or net realizable value. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods during the annual period and requires a prospective approach to adoption. Early adoption is permitted. The Company does not expect that this guidance will have a material impact on its consolidated financial statements. In May 2014, the FASB issued a new guidance on the recognition of revenue from contracts with customers, which includes a single set of rules and criteria for revenue recognition to be used across all industries. The new revenue guidance’s core principle is built on the contract between a vendor and a customer for the provision of goods and services. It attempts to depict the exchange of rights and obligations between the parties in the pattern of revenue recognition based on the consideration to which the vendor is entitled. To accomplish this objective, the guidance requires five basic steps: identify the contract with the customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when or as the entity satisfies a performance obligation. In August 2015, the FASB issued an update to defer the effective date by one year. This guidance is effective for annual reporting periods beginning after December 15, 2017, including interim periods during the annual period. Early adoption is allowed for annual reporting periods beginning after December 15, 2016. Different transition methods are available - full retrospective method and a modified retrospective (cumulative effect) approach. The Company has not selected the transition method and is currently evaluating the impact of the adoption of this guidance on its consolidated financial statements.

Net Loss Per Common Share

Net Loss Per Common Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Net Loss Per Common Share	2. Net Loss Per Common Share The Company calculates basic net income (loss) per common share by dividing net income (loss) by the weighted average number of common shares outstanding during the reporting period. Diluted net income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of common and potentially dilutive common shares outstanding during the reporting period. Potentially dilutive securities are composed of incremental common shares issuable upon the exercise of stock options and restricted stock units. The following table sets forth the computation of net loss per share: Year Ended December 31, 2015 2014 2013 (in thousands, except per share data) Net loss attributable to the Company $ (17,060 ) $ (15,295 ) $ (2,965 ) Weighted average common shares outstanding - basic 55,589 53,451 51,596 Dilutive effect of employee stock plans - - - Weighted average common shares outstanding - diluted 55,589 53,451 51,596 Net loss per common share, basic $ (0.31 ) $ (0.29 ) $ (0.06 ) Net loss per common share, diluted $ (0.31 ) $ (0.29 ) $ (0.06 ) The following outstanding options and restricted stock units were excluded from the computation of diluted net loss per common share for the periods presented because including them would have had an anti-dilutive effect: Year Ended December 31, 2015 2014 2013 (in thousands) Options to purchase common stock 2,028 2,626 3,552 Restricted stock units 2,194 2,465 1,776

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	3. Fair Value Measurements The Company’s financial assets and liabilities measured at fair value on a recurring basis include cash equivalents. Fair value is defined as the price that would be received from selling an asset and paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-tiered fair value hierarchy is established as basis for considering the above assumptions and determining the inputs used in the valuation methodologies in measuring fair values. The three levels of inputs are defined as follows: Level 1 – Unadjusted quoted market prices for identical assets or liabilities in active markets that the Company has the ability to access. Level 2 – Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in inactive markets. Level 3 – Valuations based on models where significant inputs are not observable. The unobservable inputs reflect the Company’s own assumptions about the assumptions that market participants would use. At December 31, 2015 and 2014, the Company’s cash equivalents comprised of an investment in a money market fund. In accordance with the guidance for fair value measurements and disclosures, the Company determined the fair value hierarchy of its money market fund and short-term bank deposit as Level 1, which approximated $102.2 million and $93.2 million as of December 31, 2015 and 2014, respectively. The carrying amount of the Company’s accounts receivable, accounts payable and accrued expenses approximate fair value due to their short term maturities. See Note 5 of Notes to Consolidated Financial Statements for discussions about using Level 3 fair value hierarchy measurements. There are no other financial assets and liabilities, except those disclosed in Note 5 of Notes to Consolidated financial statements that require Level 2 or Level 3 fair value hierarchy measurements and disclosures.

Balance Sheet Components

Balance Sheet Components	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Balance Sheet Components	4. Balance Sheet Components Inventories As of December 31, 2015 2014 (in thousands) Work-in-process $ 33,701 $ 37,207 Finished goods 13,308 14,715 $ 47,009 $ 51,922 Property and equipment, net As of December 31, 2015 2014 (in thousands) Test equipment and mask costs $ 71,021 $ 50,591 Software, design tools, computer and other equipment 62,331 53,686 Furniture, office equipment and leasehold improvements 5,755 2,500 139,107 106,777 Less: accumulated depreciation and amortization (74,430 ) (49,814 ) $ 64,677 $ 56,963 Depreciation and amortization expense was $32.9 million, $19.5 million and $17.7 million for the years ended December 31, 2015, 2014 and 2013, respectively. Certain fully depreciated property and equipment have been eliminated from both the gross and accumulated amount. The Company has capitalized $8.9 million, $5.9 million and $3.6 million of mask costs for the years ended December 31, 2015, 2014 and 2013, respectively. For the years ended December 31, 2015, 2014 and 2013, total amortization expense from masks was $4.9 million, $2.6 million and $4.5 million, respectively. Total mask cost, net of accumulated depreciation at December 31, 2015 and 2014 was $9.6 million and $5.6 million, respectively. The Company leases certain design tools and test equipment under capital lease and certain financing arrangements which are included in property and equipment, which total cost, net of accumulated amortization amounted to $25.3 million and $35.8 million at December 31, 2015 and 2014, respectively. Amortization expense related to assets recorded under capital lease and certain financing agreements was $14.7 million, $9.5 million and $6.5 million for the years ended December 31, 2015, 2014 and 2013, respectively. Other accrued expenses and other current liabilities As of December 31, 2015 2014 (in thousands) Accrued compensation and related benefits $ 4,485 $ 4,855 Professional fees 1,018 1,029 Accrued royalties 761 638 Manufacturing rights payable (Note 12) 1,875 - Income tax payable 541 451 Other 763 809 $ 9,443 $ 7,782 Warranty Accrual The following table presents a rollforward of the warranty liability, which is included within other accrued expenses and other current liabilities above: Year Ended December 31, 2015 2014 2013 (in thousands) Beginning balance $ 227 $ 167 $ 440 Accruals and adjustments 459 679 206 Settlements (350 ) (619 ) (479 ) Ending balance $ 336 $ 227 $ 167 Deferred revenue As of December 31, 2015 2014 (in thousands) Services/support and maintenance $ 5,531 $ 5,769 Software license/subscription 785 516 $ 6,316 $ 6,285

Business Combination and Divest

Business Combination and Divestitures	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Business Combination and Divestitures	5. Business Combination and Divestitures Xpliant, Inc. Pursuant to the Agreement and Plan of Merger and Reorganization (“the Merger Agreement”) between the Company and Xpliant, Inc., a final closing occurred on April 29, 2015 as discussed in detail below. Between May 2012 and March 2015, the Company entered into several note purchase agreements and promissory notes with Xpliant to provide cash advances. Xpliant was a Delaware incorporated and privately held company, engaged in the design and development of next generation software defined network switch chips. Prior to the closing of the merger pursuant to the Merger Agreement between the Company and Xpliant, the Company concluded that Xpliant was a VIE as the Company was Xpliant’s primary beneficiary due to the Company’s involvement with Xpliant and the Company’s purchase option to acquire Xpliant. As such, the Company has included the accounts of Xpliant in the consolidated financial statements. The Company had made total cash advances of $85.8 million, consisting of $10.0 million under nine convertible notes which, as amended, matured on August 31, 2014 and $75.8 million under several promissory notes which originally mature between April 2015 and March 2016. All promissory notes were cancelled on July 31, 2015. The convertible notes and promissory notes bore an annual interest rate of 6%. In addition to the funding received by Xpliant from the Company, between May 2012 and January 2014, certain third party investors (“non-controlling interest”) made cash advances of $13.0 million under several convertible notes which, as amended, matured on August 31, 2014 and $2.9 million under a convertible security. All of the convertible notes bore interest at a rate of 6%, payable at maturity. Two of the convertible notes held by a third party investor with a principal amount of $1.0 million matured and were paid by Xpliant in December 2013. Pursuant to the convertible notes, in the event Xpliant closed a corporate transaction, as defined in the convertible notes, the holders of the convertible notes were entitled to receive two times the outstanding principal plus any unpaid accrued interest. The convertible security had the same features as the convertible notes, with the exception of the requirement for repayment, interest and maturity. For accounting purposes, the Company determined that the convertible security had derivative features and determined that the fair value of the derivative features of the convertible security at the issuance date was approximately the same as the principal amount. All of the convertible notes and the derivative feature of convertible security were classified as Level 3 liability and were all remeasured and presented at fair value in the consolidated financial statements at each reporting period. Pursuant to the option to acquire Xpliant, in June 2014, the Company provided notice to Xpliant of its decision to exercise the purchase option. Therefore, the convertible notes and derivative features of convertible security were valued to two times its principal amount at its maturity date. As such, the Company recorded the change in estimated fair value of notes payable and other of $14.9 million in the consolidated statement of operations in 2014. Pursuant to the Merger Agreement between the Company and Xpliant as discussed in detail below, in October 2014, a portion of the cash advances made by the Company to Xpliant were used to settle all outstanding convertible notes, related accrued interest and convertible security held by non-controlling interest. On July 30, 2014, the Company entered into the Merger Agreement, which was amended on October 8, 2014 and March 31, 2015 with Xpliant. Under the terms of the Merger Agreement, as amended, the Company paid approximately $3.6 million in total cash consideration in exchange for all outstanding securities held by Xpliant’s stockholders. Pursuant to the Merger Agreement, as amended, a first closing occurred on March 31, 2015 and the Company paid $2.5 million to Xpliant’s stockholders with respect to approximately 70% of the Xpliant stock outstanding and a second and final closing occurred on April 29, 2015 and the Company paid $1.1 million to Xpliant’s stockholders with respect to the then remaining approximately 30% of the Xpliant stock outstanding. Based on the substance of the transaction, the Company recorded the payments of cash consideration to Xpliant stockholders as a decrease to the Company’s additional paid-in capital within stockholders’ equity. Pursuant to the Merger Agreement and in connection with the transaction contemplated by the Merger Agreement, in October 2014, a portion of the cash advances made by the Company to Xpliant were used to settle all outstanding convertible notes, related accrued interest and the convertible security held by non-controlling interest of $30.8 million. Additionally, $1.7 million was used to make cash payments to the employees of Xpliant that were hired by the Company. Further, per the Merger Agreement, in October 2014, the Company issued RSU’s of approximately 193,000 shares with a fair value of $8.7 million based on the Company’s closing stock price at the grant date to the employees of Xpliant that were hired by the Company. Prior to the closing of the merger pursuant to the Merger Agreement and the settlement of the outstanding convertible notes and convertible security to non-controlling interest, the net loss of Xpliant was allocated to the Company and to the non-controlling interest based on the outstanding cash advances provided to Xpliant at each reporting period. Disposition of Certain Consumer Product Assets In September 2012, the Company completed the sale of certain consumer product assets to a third party company. Under an asset purchase agreement, the Company agreed to transfer certain assets such as property and equipment and intangible assets to the third party company for an aggregate cash consideration of $2.4 million, payable in installments starting from January 10, 2013 through January 10, 2015. The Company determined that the payment terms were not fixed and determinable and as such the Company treated this transaction as disposition of assets and recognized the future payments as a credit to sales, general and administrative expenses when the payments became due. The carrying value of the assets related to the sale of $2.7 million was recognized as a loss on disposition of certain consumer product assets within sales, general and administrative expenses in 2012. The Company received total installment cash consideration of $0.4 million, $1.0 million and $1.0 million for the years ended December 31, 2015, 2014 and 2013, respectively, which was recognized as a credit within sales, general and administrative expenses. Sale of Held for Sale Assets In January 2013, the Company completed the sale of certain assets to a third-party company. Under the asset purchase agreement, the Company agreed to transfer certain assets for an aggregate cash consideration of $3.3 million and the carrying value of the assets held for sale was approximately $2.6 million. The difference between the sale consideration and the carrying value of the assets held for sale of $0.7 million was recognized as a gain on sale of held for sale assets within sales, general and administrative expenses.

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	12 Months Ended
	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	6. Goodwill and Intangible Assets, Net Goodwill Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. The carrying value of goodwill as of December 31, 2015 was $71.5 million, unchanged from the balance at December 31, 2014. The Company reviews goodwill for impairment annually at the beginning of its fourth calendar quarter or whenever events or changes in circumstances that would more-likely-than-not reduce the fair value of a reporting unit below its carrying amount. The Company has one reporting unit. As such, the Company performed a qualitative assessment of the goodwill at the Company level as a whole and concluded that it was more-likely-than-not that goodwill is not impaired. In assessing the qualitative factors, the Company considered among others these key factors: (i) changes in the industry and competitive environment; (ii) market capitalization; (iii) stock price; and (iv) overall financial performance. Intangible assets, net As of December 31, 2015 Gross Accumulated Amortization Net Weighted average remaining amortization period (years) (in thousands) Technology licenses $ 70,521 $ (35,625 ) $ 34,896 6.10 Existing and core technology - product 41,711 (41,115 ) 596 0.99 Customer contracts and relationships 2,215 (2,215 ) - - Trade name 2,296 (2,296 ) - - Total amortizable intangible assets $ 116,743 $ (81,251 ) $ 35,492 6.01 As of December 31, 2014 Gross Accumulated Amortization Net Weighted average remaining amortization period (years) (in thousands) Technology licenses $ 64,002 $ (28,247 ) $ 35,755 7.07 Existing and core technology - product 42,085 (40,264 ) 1,821 1.39 Customer contracts and relationships 8,991 (8,965 ) 26 0.83 Trade name 2,296 (2,254 ) 42 0.17 Order backlog 640 (640 ) - - Total amortizable intangible assets $ 118,014 $ (80,370 ) $ 37,644 6.79 Amortization expense was $9.6 million, $14.6 million and $23.3 million for the years ended December 31, 2015, 2014 and 2013, respectively. The amortization expense for the year ended December 31, 2013 includes the effect of the change in the estimated useful lives of certain consumer product related intangible assets amounting to $6.2 million , or $0.12 earnings per share attributable to the Company. Certain fully amortized intangible assets have been eliminated from both the gross and accumulated amount. The estimated future amortization expense of amortizable intangible assets is as follows (in thousands): 2016 $ 8,643 2017 6,626 2018 5,001 2019 4,092 2020 3,751 2021 and thereafter 7,379 $ 35,492

Restructuring Accrual

Restructuring Accrual	12 Months Ended
	Dec. 31, 2015
Restructuring And Related Activities [Abstract]
Restructuring Accrual	7. Restructuring Accrual In connection with a workforce reduction during the years ended December 31, 2014 and 2013, the Company incurred and paid $1.4 million and $1.4 million, respectively, related to severance and other related benefits. In addition, in 2014, the Company recorded restructuring accrual of $0.2 million related to the unused portion of a leased facility in Beijing China, which lease expired in December 2014. There were no outstanding accrued restructuring payables as of December 31, 2015 and 2014, respectively.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2015
Stockholders Equity Note [Abstract]
Stockholders' Equity	8. Stockholders’ Equity Common and Preferred Stock As of December 31, 2015 and 2014, the Company is authorized to issue 200,000,000 shares of $0.001 par value common stock and 10,000,000 shares of $0.001 par value preferred stock. The Company is authorized to issue preferred stock in one or more series and to fix the rights, preferences, privileges and restrictions thereof, including dividend rights, dividend rates, conversion rights, voting rights, terms of redemption and liquidation preferences. As of December 31, 2015 and 2014, no shares of preferred stock were outstanding. 2007 Stock Incentive Plan Upon completion of its IPO in May 2007, the Company adopted the 2007 Stock Incentive Plan, the 2007 Plan, which reserved 5,000,000 shares of the Company’s common stock. The number of shares of the common stock reserved for issuance will be increased annually on January 1 st 2001 Stock Incentive Plan The Company’s 2001 Stock Incentive Plan, the 2001 Plan, expired as of December 31, 2011, thus there were no outstanding shares reserved for issuance. Options granted under the 2001 Plan were either incentive stock options or non-statutory stock options as determined by the Company’s board of directors. Options granted under the 2001 Plan vested at the rate specified by the plan administrator, typically with 1/8th of the shares vesting six months after the date of grant and 1/48th of the shares vesting monthly thereafter over the next three and one half years to four and one half years. The term of option expire ten years from the date of grant. Under the Company’s 2001 Plan, certain employees have the right to early-exercise unvested stock options, subject to rights held by the Company to repurchase unvested shares in the event of voluntary or involuntary termination. For options granted prior to March 2005, the Company has the right to repurchase any such shares at the shares’ original purchase price. For options granted after March 2005, the Company has the right to repurchase such shares at the lower of market value or the original purchase price. No outstanding unvested shares of common stock as of December 31, 2015 and 2014. Stock Options Detail related to stock option activity is as follows: Number of Options Outstanding Weighted Average Exercise Price Balance as of December 31, 2012 4,197,704 $ 16.83 Options granted 242,375 37.15 Options exercised (723,047 ) 14.95 Options cancelled and forfeited (164,816 ) 34.36 Balance as of December 31, 2013 3,552,216 17.79 Options granted 165,000 38.78 Options exercised (1,082,914 ) 14.05 Options cancelled and forfeited (8,042 ) 28.46 Balance as of December 31, 2014 2,626,260 20.62 Options granted 87,178 64.70 Options exercised (685,439 ) 14.02 Options cancelled and forfeited - - Balance as of December 31, 2015 2,027,999 24.75 The aggregate intrinsic value for options exercised during the years ended December 31, 2015, 2014 and 2013, were $37.4 million, $36.2 million and $16.0 million, respectively, representing the difference between the closing price of the Company’s common stock at the date of exercise and the exercise price paid. The following table summarizes information about stock options outstanding as of December 31, 2015: Outstanding Options Exercisable Options Exercise Prices Number of Shares Weighted Average Remaining Contractual Term Weighted Average Exercise Price Number of shares Weighted Average Exercise Price Aggregate Intrinsic Value $3.04 - $3.04 362,584 0.22 $ 3.04 362,584 $ 3.04 $5.42 - $8.52 14,126 1.01 7.35 14,126 7.35 $10.32 - $10.32 344,668 0.10 10.32 344,668 10.32 $13.50 - $24.16 312,675 0.90 22.44 312,675 22.44 $24.99 - $35.73 304,702 2.93 32.31 296,346 32.21 $37.63 - $37.63 409,961 3.20 37.42 342,967 37.38 $37.83 - $62.86 267,283 5.03 46.03 112,724 40.66 $76.38 - $76.38 12,000 6.46 76.38 6,000 76.38 $3.04 - $76.38 2,027,999 1.99 $ 24.75 1,792,090 $ 21.87 $ 83,200,687 Exercisable 1,792,090 1.58 $ 21.87 $ 78,633,864 Vested and expected to vest 2,009,482 1.96 $ 24.53 $ 82,880,538 The aggregate intrinsic value for options outstanding at December 31, 2015, represents the difference between the weighted average exercise price and the closing price of the Company’s common stock at December 31, 2015, as reported on The NASDAQ Global Market, for all in the money options outstanding. The fair value of each option grant for the years ended December 31, 2015, 2014 and 2013 were estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions below. Year Ended December 31, 2015 2014 2013 Risk-free interest rate 1.34% to 1.41% 1.26% to 1.47% 0.32% to 1.04% Expected life 3.77 to 4.58 years 3.77 to 4.53 years 3.77 to 4.53 years Dividend yield 0% 0% 0% Volatility 41.0% to 43.0% 43.8% to 45.1% 45.8% to 49.6% The estimated weighted-average grant date fair value of options granted for the years ended December 31, 2015, 2014 and 2013 was $23.79 per share, 14.63 per share and 14.91 per share, respectively. As of December 31, 2015, there was $3.4 million of unrecognized compensation costs, net of estimated forfeitures, related to stock options granted under the Company’s 2007 Equity Incentive Plan and 2001 Stock Incentive Plan. The unrecognized compensation cost is expected to be recognized over a weighted average period of 2.07 years. Restricted Stock Units The Company began issuing RSUs in 2007. Shares are issued on the date the restricted stock units vest, and the fair value of the underlying stock on the dates of grant is recognized as stock-based compensation over a three or four-year vesting period. A summary of the activity of restricted stock for the related periods are presented below : Number of Shares Weighted-Average Grant Date Fair Value Per Share Balance as of December 31, 2012 1,823,563 $ 33.17 Granted 1,119,570 36.32 Issued and released (867,213 ) 32.46 Cancelled and forfeited (299,750 ) 32.29 Balance as of December 31, 2013 1,776,170 35.64 Granted 1,970,094 41.32 Issued and released (1,154,123 ) 37.55 Cancelled and forfeited (127,394 ) 37.05 Balance as of December 31, 2014 2,464,747 39.21 Granted 955,592 61.82 Issued and released (1,115,525 ) 40.94 Cancelled and forfeited (110,746 ) 45.82 Balance as of December 31, 2015 2,194,068 47.85 The total intrinsic value of the RSUs outstanding as of December 31, 2015 was $144.2 million, representing the closing price of the Company’s stock on December 31, 2015, multiplied by the number of non-vested RSUs expected to vest as of December 31, 2015. Included in the RSU grants in the year ended December 31, 2015 are one-year and two-year performance-based RSU’s granted in February 2015. The Company determined that the fair value of these performance RSU’s were $2.1 million and $0.7 million, respectively. Based on the Company’s evaluation of the probability of achieving the milestones as of December 31, 2015, no stock-based compensation was recorded related to these performance-based RSU’s. The Company continues to evaluate the probability of achieving the milestone of the outstanding performance-based RSU grants at each reporting period and updates the recognition of related stock-based compensation expense. Also included in the RSU grants in the year ended December 31, 2015 in the table above is a four-year vesting market-based RSU granted in February 2015. This market-based RSU will vest if: (i) the average closing price of the Company’s common stock over a period of 30 consecutive trading days is equal to or greater than the price per share set by the Board; and (ii) the recipient remains in continuous service with the Company through such vesting period. The Company determined that the grant date fair value of this market-based RSU was $1.5 million and recorded the related stock-based compensation expense for the year ended December 31, 2015. In October 2014, the Company granted RSU’s in connection with the Xpliant Merger Agreement. See Note 5 of Notes to Consolidated Financial Statements for related discussions. As of December 31, 2015, there was $79.0 million of unrecognized compensation costs, net of estimated forfeitures related to RSUs granted under the Company’s 2007 Equity Incentive Plan. The unrecognized compensation cost is expected to be recognized over a weighted average period of 2.32 years. Stock-Based Compensation The following table presents the detail of stock-based compensation expense amounts included in the consolidated statements of operations for each of the periods presented: Year Ended December 31, 2015 2014 2013 (in thousands) Cost of revenue $ 765 $ 954 $ 951 Research and development 29,085 32,328 18,577 Sales, general and administrative 18,447 19,177 15,070 $ 48,297 $ 52,459 $ 34,598 The total stock-based compensation cost capitalized as part of inventory as of December 31, 2015 and 2014 was not material.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	9. Income Taxes The following table presents the provision for income taxes and the effective tax rates: Year Ended December 31, 2015 2014 2013 (in thousands) Loss before income taxes $ (15,378 ) $ (24,182 ) $ (11,751 ) Provision for income taxes 1,682 1,633 1,937 Effective tax rate (10.9 )% (6.8 )% (16.5 )% The provision for income taxes for the years ended December 31, 2015 and 2014 was primarily related to earnings in foreign jurisdictions. The provision for income taxes for the year ended December 31, 2013 was primarily related to foreign tax rate differential and increase in indefinite-lived intangible related deferred tax liability. The domestic and foreign components of loss before income tax expense were as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Domestic $ (37,109 ) $ (42,318 ) $ (20,066 ) Foreign 21,731 18,136 8,315 $ (15,378 ) $ (24,182 ) $ (11,751 ) The provision for income taxes consists of the following: Year Ended December 31, 2015 2014 2013 (in thousands) Current tax provision (benefit) Domestic $ (15 ) $ 19 $ 10 Foreign 1,034 1,230 1,123 1,019 1,249 1,133 Deferred tax provision (benefit) Domestic 564 627 713 Foreign 99 (243 ) 91 663 384 804 Provision for income taxes $ 1,682 $ 1,633 $ 1,937 The Company’s effective tax rate differs from the United States federal statutory rate as follows: Year Ended December 31, 2015 2014 2013 Income tax at statutory rate 35.0 % 35.0 % 35.0 % Stock compensation costs (13.1 ) 5.6 1.8 Other (0.1 ) 0.6 1.5 Convertible securities - (4.2 ) - State taxes, net of federal benefit (0.1 ) (0.4 ) (1.6 ) Foreign income inclusion in the U.S. (4.9 ) (0.5 ) (3.8 ) Research and development credits 42.6 24.2 48.0 Foreign tax rate differential 41.5 19.6 46.7 Change in valuation allowance (111.8 ) (86.7 ) (144.1 ) Total (10.9 )% (6.8 )% (16.5 )% The research and development credit, which had previously expired on December 31, 2014, was reinstated as part of the Protecting Americans from Tax Hikes Act of 2015, enacted on December 18, 2015. This legislation retroactively reinstated and permanently extended the research and development credit. There is no income tax provision impact as the Company has full valuation allowance against its related deferred tax assets. On July 27, 2015, the U.S. Tax Court in Altera Corp. v. Commissioner, 145 T.C. No. 3 (2015) issued an opinion with respect to Altera’s litigation with the Internal Revenue Service, concerning the treatment of stock-based compensation expense in an inter-company cost sharing arrangement. In ruling in favor of Altera, the Tax Court invalidated the portion of the Treasury regulations requiring the inclusion of stock-based compensation expense in such inter-company cost-sharing arrangements. Accordingly, the Company adjusted its inter-company arrangement to reflect the recent ruling. On an ongoing basis, stock-based compensation will be excluded from intercompany charges. The tax effects of the temporary differences that give rise to deferred tax assets and liabilities are as follows: As of December 31, 2015 2014 (in thousands) Deferred tax assets: Tax credits $ 47,113 $ 38,354 Net operating loss carryforwards 40,325 44,975 Capitalized research and development 18,093 4,652 Intangible assets 6,374 3,881 Depreciation and amortization 1,970 1,355 Stock compensation 10,813 9,893 Other 2,845 2,832 Gross deferred tax assets 127,533 105,942 Less: valuation allowance (127,328 ) (105,638 ) Net deferred tax assets 205 304 Deferred tax liabilities: Intangible assets (3,400 ) (2,836 ) Net deferred tax liabilities $ (3,195 ) $ (2,532 ) Reported As Deferred tax assets, non-current $ 222 $ 318 Deferred tax liabilities, current - (14 ) Deferred tax liabilities, non-current (3,417 ) (2,836 ) Net deferred tax liabilities $ (3,195 ) $ (2,532 ) As of December 31, 2015, the Company had total net operating loss carryforwards for federal and states of California and Massachusetts income tax purposes of $371.1 million and $200.1 million, respectively. If not utilized, these federal and state net operating loss carryforwards will expire beginning in 2020 and 2016, respectively. The federal and states of California and Massachusetts net operating loss carryforwards include excess windfall deductions of $214.3 million and $130.5 million, The Company is tracking the portion of its deferred tax assets attributable to stock option benefits in a separate memo account pursuant to the accounting guidance for stock-based compensation. Therefore, these amounts are no longer included in the Company’s gross or net deferred tax assets. Pursuant to the guidance for stock-based compensation, the stock option benefits of approximately $83.1 million will be recorded within stockholders’ equity when it reduces cash taxes payable. The Company uses the “with and without” approach in determining when excess tax benefits have been realized, and the Company considers the direct effects of stock option deductions to calculate excess tax As of December 31, 2015, the Company also had federal and state research and development tax credit carryforwards of approximately $40.7 million and $36.2 million, respectively. The federal and state tax credit carryforwards will expire commencing 2020 and 2016, respectively, except for the California research tax credits which carry forward indefinitely. The Company also has various federal tax credits of approximately $0.9 million The Company’s net deferred tax assets relate predominantly to its U.S. tax jurisdiction. A full valuation allowance against the Company federal and state net deferred tax assets has been in place since 2012. The Company periodically evaluates the realizability of its net deferred tax assets based on all available evidence, both positive and negative. The realization of net deferred tax assets is dependent on the Company's ability to generate sufficient future taxable income during periods prior to the expiration of tax attributes to fully utilize these assets. The Company weighed both positive and negative evidence and determined that there is a continued need for a valuation allowance as the Company is in a cumulative loss position over the previous three years, which is considered significant negative evidence. As such, the Company has not changed its judgment regarding the need for a full valuation allowance on its federal and state deferred tax assets as of December 31, 2014 and 2015. Until such time, consumption of tax attributes to offset profits will reduce the overall level of deferred tax assets subject to valuation allowance. Should the Company determine that it would be able to realize its remaining deferred tax assets in the foreseeable future, an adjustment to its remaining deferred tax assets would cause a material increase to net income in the period such determination is made. The Company reviews whether the utilization of its net operating losses and research credits are subject to an annual limitation due to the ownership change limitations provided by the Internal Revenue Code and similar state provisions. Utilization of these carryforwards is restricted and results in some amount expiring prior to benefiting the Company. The deferred tax assets shown above have been adjusted to reflect these expiring carryforwards. Undistributed earnings of the Company’s foreign subsidiaries of approximately $38.3 million and $4.5 million as of December 31, 2015 and 2014, respectively, are considered to be indefinitely reinvested and, accordingly, no provisions for federal and state income taxes have been provided thereon. Upon distribution of those earnings in the form of dividends or otherwise, the Company would be subject to both United States income taxes (subject to an adjustment for foreign tax credits) and The following table summarizes the activity related to the unrecognized tax benefits: Year Ended December 31, 2015 2014 2013 (in thousands) Balance at beginning of the year $ 16,270 $ 14,625 $ 12,749 Gross increases (decreases) related to prior year's tax positions 398 199 (526 ) Gross increases related to current year's tax positions 3,138 1,446 2,402 Releases related to prior year's tax positions (97 ) - - Balance at the end of the year $ 19,709 $ 16,270 $ 14,625 Included in the unrecognized tax benefits at December 31, 2015 is $1.0 million that, if recognized, would reduce the Company’s annual effective tax rate after considering the valuation allowance. The Company’s practice is to recognize interest and/or penalties related to income tax matters in income tax expense. The Company has immaterial accrued potential penalties and interest during the year ended December 31, 2015, 2014 and 2013 Beginning in 2011, the Company is operating under tax incentives in Singapore, which are effective through February 2020. The tax incentives are conditional upon the Company meeting certain employment, revenue, and investment thresholds. The Company realized benefits from the reduced tax rate for the periods presented as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Provision for Singapore entity at statutory tax rate of 17% $ 811 $ 719 $ 615 Provision for (benefit from) Singapore entity in the consolidated statement of operations 310 303 (209 ) Benefit from preferential tax rate differential (501 ) (416 ) (824 ) Impact of tax benefits per basic and diluted share $ (0.01 ) $ (0.01 ) $ (0.02 ) The Company’s major tax jurisdictions are the United States federal government, the states of California and Massachusetts, Japan, India, China and Singapore. The Company files income tax returns in the United States federal jurisdiction, the states of California and Massachusetts, various other states, and foreign jurisdictions in which it has a subsidiary or branch operations. The United States federal corporation income tax returns beginning with the 2000 tax year remain subject to examination by the Internal Revenue Service, or IRS. The California corporation income tax returns beginning with the 2000 tax year remain subject to examination by the California Franchise Tax Board. As of December 31, 2015, there are no on-going tax audits in the major tax jurisdictions other than India. The India tax audit is for the tax years 2011, 2012 and 2013. The Company does not expect any material tax adjustments from either of these audits.

Retirement Plan

Retirement Plan	12 Months Ended
	Dec. 31, 2015
Compensation And Retirement Disclosure [Abstract]
Retirement Plan	10. Retirement Plan The Company has established a defined contribution savings plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all employees who meet minimum age and service requirements and allows participants to defer a portion of their annual compensation on a pre-tax basis. The Company matches 50% of the employees’ annual contribution up to two thousand dollars per employee. The Company contributions to the plan may be made at the discretion of the Company’s board of directors. For the years ended December 31, 2015, 2014 and 2013, the Company’s defined contribution expense was $1.1 million, $1.0 million and $0.8 million, respectively. In connection with local foreign laws, the Company is required to have a tenured-based defined benefit plan for its employees in Korea and India. The Company’s tenured-based payout liability is calculated based on the salary of each employee multiplied by the years of such employee’s employment, and is reflected on the Company’s consolidated balance sheets in other non-current liabilities on an accrual basis. The total liability from such defined benefit plan amounted to $0.4 million and $0.5 million as of December 31, 2015 and 2014, respectively.

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Segment and Geographic Information	11. Segment and Geographic Information Operating segments are based on components of the Company that engage in business activity that earn revenue and incur expenses and (a) whose operating results are regularly reviewed by the Company’s chief operating decision maker, or CODM, to make decisions about resource allocation and performance and (b) for which discrete financial information is available. The Company manages and operates as one operating segment. The Company’s net revenue consists primarily of sale of semiconductor products and to a lesser extent also derives revenue from licensing software and related maintenance and support. The revenue from these sources is classified by the Company as product revenue. The Company also generates revenue from professional service arrangements which is categorized as service revenue. The total service revenue is less than 10% of the Company’s total net revenue for the years ended December 31, 2015, 2014 and 2013. The Company categorizes its net revenue in two different markets, (i) the enterprise network, data center and access and service provider markets; and (ii) broadband and consumer markets. The net revenue by markets for the periods indicated was as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Enterprise network, data center and access and service provider markets $ 377,809 $ 341,056 $ 259,860 Broadband and consumer markets 34,935 31,922 44,133 $ 412,744 $ 372,978 $ 303,993 The following table is based on the geographic location of the original equipment manufacturers, the contract manufacturers or the distributors who purchased the Company’s products. For sales to the distributors, their geographic location may be different from the geographic locations of the ultimate end customers. Net revenue by geography for the periods indicated were as follows: Year Ended December 31, 2015 2014 2013 (in thousands) United States $ 128,431 $ 111,997 $ 90,537 China 100,980 93,045 77,965 Mexico 34,452 27,184 22,572 Korea 28,578 28,665 30,003 Taiwan 34,533 29,229 26,023 Finland 38,283 44,976 17,767 Germany 13,272 10,335 5,947 Other countries 34,215 27,547 33,179 Total $ 412,744 $ 372,978 $ 303,993 The following table sets forth the tangible long lived assets, which consist of property and equipment, net by geographic regions: As of December 31, 2015 2014 (in thousands) United States $ 52,547 $ 49,856 All other countries 12,130 7,107 Total $ 64,677 $ 56,963

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. Commitments and Contingencies The Company is not currently a party to any legal proceedings, the outcome of which, if determined adversely to the Company, would have a material adverse effect on the consolidated financial position, results of operations or cash flows of the Company. The Company leases its facilities under non-cancelable operating leases, which contain renewal options and escalation clauses, and expire on various dates ending in October 2022. The capital lease and technology license obligations include future cash payments payable primarily for license agreements with various outside vendors. For license agreements which qualify under capital lease and where installment payments extend beyond one year, the present value of the future installment payments are capitalized and included as part of intangible assets or property and equipment which is amortized over the estimated useful lives of the related licenses. Minimum commitments under non-cancelable operating leases and capital lease and technology license obligations as of December 31, 2015 are as follows: Capital lease and technology license obligations Operating leases Total (in thousands) 2016 $ 21,766 $ 9,012 $ 30,778 2017 8,795 8,781 17,576 2018 1,075 8,947 10,022 2019 - 8,847 8,847 2020 - 8,966 8,966 2021 thereafter - 14,169 14,169 $ 31,636 $ 58,722 $ 90,358 Less: Interest component (3.75% annual rate) 1,170 Present value of minimum lease payment 30,466 Current portion of the obligations $ 20,608 Long-term portion of obligations $ 9,858 Rent expense incurred under operating leases was $8.0 million, $6.4 million and $5.1 million for the years ended December 31, 2015, 2014 and 2013, respectively. In October 2014, the Company entered into a new purchase agreement with a third party vendor for $28.5 million, payable in installments that mature in August 2017 in exchange for certain design tools. In July 2015, the Company signed a purchase agreement with a third party vendor to acquire certain core software licenses amounting to $4.3 million, payable in 12 equal quarterly installments. In addition, the Company agreed to purchase additional combinations of core software licenses under a flexible spending program totaling $6.0 million for two years, with a minimum annual spend as specified in the agreement. On March 30, 2015, Xpliant exercised its option to purchase the manufacturing rights to accelerate the takeover of manufacturing, and to relieve Xpliant from any further obligation to purchase product quantities from Xpliant’s application specific integrated circuit, or ASIC, vendor. In consideration for this, Xpliant agreed to pay a $7.5 million manufacturing rights licensing fee and a per-unit royalty fee for certain ASIC products sold to certain customers for a limited time. The manufacturing rights licensing fee is payable in 4 equal quarterly payments, with the first installment payment due on April 29, 2015 and each of the subsequent three installment payments being due on the first day of the following calendar quarter. The royalty shall be payable within 30 days after the end of each calendar quarter following the sale. Considering the terms of the purchase of the manufacturing rights, the Company recorded the full amount of the manufacturing rights licensing fee within research and development expense on the consolidated statement of operations and the related liability was recorded within other accrued expenses and other current liabilities on the consolidated balance sheets. During 2015, the Company paid the first, second and third installments due. On January 30, 2015, the Company submitted an initial notification of a voluntary self-disclosure to the U.S. Department of Commerce, Bureau of Industry and Security, or BIS. The notification reported the Company’s discovery that hardware and software, with encryption functionality, may have been exported without the required BIS export license. With the assistance of outside counsel, the Company conducted a review of past export transactions during the past five years, and on July 17, 2015, the Company reported its findings in a full voluntary self-disclosure to BIS. The findings reported that the Company exported certain encryption hardware and software to fifteen government end-users in the People’s Republic of China, Taiwan, Hong Kong, Singapore, India and South Korea, as well as one party on BIS' entity list, without the required BIS export license. The aggregate billings for the reported exports were approximately $0.5 million. The disclosure also addressed the Company’s remedial and corrective actions. BIS is reviewing the Company’s voluntary self-disclosure and the Company is cooperating fully with BIS. Violations of the export control laws may result in civil, administrative or criminal fines or penalties, loss of export privileges, debarment or a combination of these penalties. At this time the Company is unable to determine the outcome of the government’s investigation or its possible effect on the Company.

Selected Quarterly Consolidated

Selected Quarterly Consolidated Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Consolidated Financial Data (Unaudited)	Selected Quarterly Consolidated Financial Data (Unaudited) The following table sets forth the Company’s unaudited consolidated statements of operations data for each of the quarters in the periods ended December 31, 2015 and 2014. The quarterly data have been prepared on the same basis as the audited consolidated financial statements. This should be read together with the consolidated financial statements and related notes included elsewhere in this Annual Report. Quarter Ended 2015 2014 December 31 September 30 June 30 March 31 December 31 September 30 June 30 March 31 (in thousands, except per share data) Net revenue $ 100,942 $ 105,063 $ 104,961 $ 101,778 $ 101,223 $ 97,833 $ 90,681 $ 83,241 Cost of revenue 34,092 36,203 37,673 35,799 38,402 35,710 33,897 30,350 Gross profit 66,850 68,860 67,288 65,979 62,821 62,123 56,784 52,891 Operating expenses: Research and development 47,764 45,367 52,225 58,422 55,108 40,459 38,834 37,289 Sales, general and administrative 19,397 18,522 20,336 20,671 19,314 18,141 17,017 15,932 Total operating expenses 67,161 63,889 72,561 79,093 74,422 58,600 55,851 53,221 Income (loss) from operations (311 ) 4,971 (5,273 ) (13,114 ) (11,601 ) 3,523 933 (330 ) Other expense, net: Interest expense (227 ) (216 ) (388 ) (410 ) (293 ) (387 ) (333 ) (459 ) Change in estimated fair value of notes payable and other - - - - - (103 ) (13,927 ) (858 ) Other, net (138 ) (173 ) (33 ) (66 ) (313 ) (116 ) (53 ) 135 Total other expense, net (365 ) (389 ) (421 ) (476 ) (606 ) (606 ) (14,313 ) (1,182 ) Income (loss) before income taxes (676 ) 4,582 (5,694 ) (13,590 ) (12,207 ) 2,917 (13,380 ) (1,512 ) Provision for income taxes 354 366 661 301 268 811 311 243 Net income (loss) (1,030 ) 4,216 (6,355 ) (13,891 ) (12,475 ) 2,106 (13,691 ) (1,755 ) Net loss attributable to non-controlling interest - - - - (444 ) (3,327 ) (2,647 ) (4,102 ) Net income (loss) attributable to the Company $ (1,030 ) $ 4,216 $ (6,355 ) $ (13,891 ) $ (12,031 ) $ 5,433 $ (11,044 ) $ 2,347 Earnings per share attributable to the Company: Net income (loss) per common share, basic $ (0.02 ) $ 0.08 $ (0.11 ) $ (0.25 ) $ (0.22 ) $ 0.10 $ (0.21 ) $ 0.04 Net income (loss) per common share, diluted $ (0.02 ) $ 0.07 $ (0.11 ) $ (0.25 ) $ (0.22 ) $ 0.10 $ (0.21 ) $ 0.04 (1) Research and development expense for the quarter ended March 31, 2015 included a charge of $7.5 million related to a manufacturing rights licensing fee due to a third party vendor. (2) Research and development expense and sales, general and administrative expenses for the quarter ended December 31, 2014 include stock-based compensation expense and related taxes of $8.8 million and $1.1 million, respectively, pursuant to the merger agreement with Xpliant. (3) A charge related to the change in estimated fair value of convertible notes and derivative feature of convertible security held by non-controlling interest for the quarters ended March 31, June 30 and September 30, 2014.

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2015
Valuation And Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	Schedule II - Valuation and Qualifying Accounts Balance at beginning of period Additions Deductions Balance at end of period (in thousands) Year ended December 31, 2015 Allowance for doubtful accounts $ 24 $ - $ - $ 24 Allowance for customer returns 1,118 4,513 (4,187 ) 1,444 Income tax valuation allowance 105,638 21,690 - 127,328 Year ended December 31, 2014 Allowance for doubtful accounts $ 24 $ 1 $ (1 ) $ 24 Allowance for customer returns 909 3,716 (3,507 ) 1,118 Income tax valuation allowance 79,928 25,710 - 105,638 Year ended December 31, 2013 Allowance for doubtful accounts $ 24 $ 3 $ (3 ) $ 24 Allowance for customer returns 967 2,752 (2,810 ) 909 Income tax valuation allowance 59,736 20,192 - 79,928 All other schedules are omitted because they are inapplicable or the requested information is shown in the consolidated financial statements of the registrant or related notes thereto.

Organization and Significant 21

Organization and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	Organization Cavium, Inc., (the “Company”), was incorporated in the state of California on November 21, 2000 and was reincorporated in the state of Delaware effective February 6, 2007. The Company designs, develops and markets semiconductor processors for intelligent and secure networks.
Basis of Consolidation	Basis of Consolidation The consolidated financial statements include the accounts of Cavium, Inc. and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Prior to the closing of the acquisition of Xpliant, Inc. (“Xpliant”) in April 2015 as discussed in Note 5 of Notes to Consolidated Financial Statements, the Company accounted for Xpliant as a variable interest entity, or VIE. Under the accounting principles generally accepted in the United States of America, or US GAAP, a VIE is required to be consolidated by its primary beneficiary. The primary beneficiary is the party that absorbs a majority of the VIE’s anticipated losses and/or a majority of the expected returns.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in its consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and on various other assumptions it believes to be reasonable under the circumstances, the results of which form the basis of making judgments about the carrying values of assets and liabilities. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition The Company primarily derives its revenue from sales of semiconductor products to original contract manufacturers, or OEM, or through OEM’s contract manufacturers or distributors. To a lesser extent, the Company also derive revenue from licensing software and related maintenance and support and from professional service arrangements. The Company recognizes revenue when (i) persuasive evidence of a binding arrangement exists; (ii) delivery has occurred or service has been rendered; (iii) the price is deemed fixed or determinable and free of contingencies and significant uncertainties; and (iv) collectibility is reasonably assured. The Company records a reduction in revenue for provision for estimated sales returns in the same period the related revenues are recorded. These estimates are based on historical patterns of return, analysis of credit memo data and other known factors at the time. Revenue is recognized upon shipment to distributors with limited rights of returns and price protection if the Company concludes that it can reasonably estimate the credit for returns and price adjustments issuable. The Company records an estimated allowance, at the time of shipment, based on the Company’s historical patterns of returns and pricing credit of sales recognized upon shipment. Credits issued to distributors or other customers have historically not been material. The inventory at these distributors at the end of the period may fluctuate from time to time mainly due to the OEM production ramps and/or new customer demands. Software arrangements typically include time-based licenses for 12 months with related support. The Company does not sell support separately, therefore, revenue from software arrangements is recognized ratably over the support period. The software arrangement may also include professional services, and these services may be purchased separately. Professional services engagements are billed on either a fixed-fee or time-and-materials basis. For fixed-fee arrangements, professional services revenue is recognized under the proportional performance method, with the associated costs included in cost of revenue. The Company estimates the proportional performance of the arrangements based on an analysis of progress toward completion. The Company periodically evaluates the actual status of each project to ensure that the estimates to complete each contract remain accurate, and a loss is recognized when the total estimated project cost exceeds project revenue. If the amount billed exceeds the amount of revenue recognized, the excess amount is recorded as deferred revenue. Revenue recognized in any period is dependent on progress toward completion of projects in progress. To the extent we are unable to estimate the proportional performance, revenue is recognized on a completed performance basis. Revenue for time-and-materials engagements is recognized as the effort is incurred.
Accounting for Stock-Based Compensation	Accounting for Stock-Based Compensation The Company applies the fair value recognition provisions of stock-based compensation. The Company recognizes the fair value of the awards on a straight-line basis over its vesting periods. The Company estimates the grant date fair value of stock options using the Black-Scholes option valuation model. The Black-Scholes option-pricing model used to determine the fair value of stock options requires various subjective assumptions, including expected volatility, expected term and the risk-free interest rates. The stock price volatility assumption is estimated using the Company’s historical stock price volatility. The Company uses the simplified method as permitted by the provisions on stock-based compensation to estimate the expected term since it has no sufficient history of weighted average period from the date of grant to exercise, cancellation, or expiration. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. For all restricted stock unit, or RSU, grants other than RSU grants with market condition, the fair value of the RSU grant is based on the market price of the Company’s common stock on the date of grant. For performance-based RSU grants, the Company evaluates the probability of achieving the milestones for each of the outstanding performance-based RSU grants at each reporting period and updates the related stock-based compensation expense. The fair value of market-based RSUs is determined using the Monte Carlo simulation method which takes into account multiple input variables that determine the probability of satisfying the market conditions stipulated in the award. This method requires the input of assumptions, including the expected volatility of the Company’s common stock, and a risk-free interest rate, similar to assumptions used in determining the fair value of the stock option grants discussed above. The grant date fair value of RSUs, less estimated forfeitures, is recorded on a straight-line basis, over the vesting period.
Income Taxes	Income Taxes The Company accounts for income taxes under the asset and liability method. Under this method, deferred tax assets, including those related to tax loss carryforwards and credits, and liabilities are determined based on the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation allowance is recorded to reduce deferred tax assets when management cannot conclude that it is more-likely-than-not that the net deferred tax asset will be recovered. The valuation allowance is determined by assessing both positive and negative evidence to determine whether it is more-likely-than-not that deferred tax assets are recoverable; such assessment is required on a jurisdiction-by-jurisdiction basis. The Company recognizes uncertain tax positions when it meets a more-likely-than-not threshold. The Company recognizes potential accrued interest and penalties related to unrecognized tax benefits as income tax expense.
Business Combinations	Business Combinations The Company accounts for business combinations using the purchase method of accounting. The Company determines the recognition of intangible assets based on the following criteria: (i) the intangible asset arises from contractual or other rights; or (ii) the intangible is separable or divisible from the acquired entity and capable of being sold, transferred, licensed, returned or exchanged. In accordance with the guidance provided under business combinations, the Company allocates the purchase price of business combinations to the tangible assets, liabilities and intangible assets acquired, including in-process research and development, or IPR&D, based on their estimated fair values. The excess purchase price over those fair values is recorded as goodwill. The Company’s valuation assumption of acquired net assets requires significant estimates, especially with respect to intangible assets. Critical estimates in valuing certain intangible assets includes future expected cash flows from customer contracts, customer lists, and distribution agreements and acquired developed technologies, expected costs to develop IPR&D into commercially viable products, estimated cash flows from projects when completed and discount rates. The Company estimates the fair value based upon assumptions the Company believes to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. Other estimates associated with the accounting for acquisitions may change as additional information becomes available regarding the assets acquired and liabilities assumed. Acquisition-related costs, including advisory, legal, accounting, valuation and other costs, are expensed in the periods in which the costs are incurred. The results of operations of acquired businesses are included in the consolidated financial statements from the acquisition date.
Valuation of Goodwill and Intangible Assets	Valuation of Goodwill and intangible assets Goodwill is measured as the excess of the cost of an acquisition over the sum of the amounts assigned to tangible and identifiable intangible assets and liabilities assumed. The Company evaluates goodwill for impairment at its single reporting unit level at least on an annual basis in the fourth quarter of the calendar year or whenever events and changes in circumstances suggest that the carrying amount may not be recoverable from its estimated future cash flow. The Company performs a qualitative assessment to determine if any events have occurred or circumstances exist that would indicate that it is more-likely-than-not that a goodwill impairment exists. If any indicators exist based on the qualitative analysis that it is more-likely-than-not that a goodwill impairment exists, the quantitative test is required. Otherwise, no further testing is required. The Company reviews long-lived assets, including property and equipment and intangible assets, for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets (or asset group) may not be fully recoverable. Whenever events or changes in circumstances suggest that the carrying amount of long-lived assets may not be recoverable, the Company estimates the future cash flows expected to be generated by the assets (or asset group) from its use or eventual disposition. If the sum of the expected future cash flows is less than the carrying amount of those assets, the Company recognizes an impairment loss based on the excess of the carrying amount over the fair value of the assets. Significant management judgment is required in the grouping of long-lived assets and forecasts of future operating results that are used in the discounted cash flow method of valuation.
Inventories	Inventories Inventories consist of work-in-process and finished goods. Inventories not related to an acquisition are stated at the lower of cost (determined using the first-in, first-out method), or market value (estimated net realizable value). Inventories from acquisitions are stated at fair value at the date of acquisition. The Company writes down excess and obsolete inventory based on its age and forecasted demand, generally over a 12 month period, which includes estimates taking into consideration the Company’s outlook on uncertain events such as market and economic conditions, technology changes, new product introductions and changes in strategic direction. Actual demand may differ from forecasted demand and such differences may have a material effect on recorded inventory values. Inventory write-downs are not reversed until the related inventories have been sold or scrapped.
Property and Equipment	Property and Equipment Property and equipment are stated at cost and depreciated over their estimated useful lives using the straight-line method. Leasehold improvements are amortized over the shorter of estimated useful lives or unexpired lease term. Additions and improvements that increase the value or extend the life of an asset are capitalized. Upon retirement or sale, the cost of assets disposed of and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is credited or charged to income. Ordinary repairs and maintenance costs are expensed as incurred. Estimated Software, design tools, computer and other equipment 1 to 5 years Test equipment and mask costs 1 to 3 years Furniture, office equipment and leasehold improvements 1 to 5 years The Company capitalizes the cost of fabrication masks that are reasonably expected to be used during production manufacturing. Such amounts are included within property and equipment and are depreciated over a period of 12 to 24 months and recorded as a component of cost of revenue. If the Company does not reasonably expect to use the fabrication mask during production manufacturing, the related mask costs are expensed to research and development in the period in which the costs are incurred. The Company leases certain design tools under capital lease and certain financing arrangements which are included in property and equipment. The Company also capitalizes acquired internally used software in property and equipment. Subsequent additions, modifications or upgrades to internally used software are capitalized to the extent it provides additional usage or functionality.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments with an original or remaining maturity of 90 days or less at the date of purchase to be cash equivalents. Cash equivalents consist of an investment in a money market fund.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts The Company reviews its allowance for doubtful accounts by assessing individual accounts receivable over a specific age and amount. The Company’s allowance for doubtful accounts were not significant as of December 31, 2015 and 2014.
Concentration of Risk	Concentration of Risk The Company’s products are currently manufactured, assembled and tested by third-party contractors in Asia. There are no long-term agreements with any of these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products for a substantial period of time, which could have a material adverse effect on the Company’s business, financial condition and results of operations. Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash, cash equivalents and accounts receivable. The Company deposits cash with credit worthy financial institutions. The Company has not experienced any losses on its deposits of cash. Management believes that the financial institutions are reputable and, accordingly, minimal credit risk exists. The Company’s cash equivalents are invested in a money market fund. The Company follows an established investment policy and set of guidelines to monitor, manage and limit the Company’s exposure to interest rate and credit risk. The policy sets forth credit quality standards and limits the Company’s exposure to any one issuer, as well as the maximum exposure to various asset classes. A majority of the Company’s accounts receivable are derived from customers headquartered in the United States. The Company performs ongoing credit evaluations of its customers’ financial condition and, generally, requires no collateral from its customers. The Company provides an allowance for doubtful accounts receivable based upon the expected collectability of accounts receivable. Summarized below are individual customers whose accounts receivable balances were 10% or higher of the consolidated gross receivable: As of December 31, 2015 2014 Percentage of gross accounts receivable Customer A 16% 12% Customer B 20% 21% Customer C * 11% * Represents less than 10% of the gross accounts receivable for the respective period end. OEM Customers B, D and E together accounted for 42.9% and 44.4% of the Company’s net revenue in 2015 and 2014, respectively. OEM Customer D accounted for 18.6% of the Company’s net revenue in 2013. No other customer accounted for more than 10% of the Company’s net revenue in 2015, 2014 and 2013.
Deferred Revenue	Deferred revenue The Company records deferred revenue for customer billings and advance payments received from customers before the performance obligations have been completed and/or services have been performed for products and/or service related agreements. The Company had a distribution agreement with a distributor which was accounted as a sell-through distributor. The distribution agreement was terminated effective May 2014. The Company recorded deferred revenue, net of deferred costs on shipments to this sell-through distributor.
Warranty Accrual	Warranty Accrual The Company’s products are generally subject to a one-year warranty period. The Company provides for the estimated future costs of replacement upon shipment of the product as cost of revenue. The warranty accrual is estimated based on cost of historical claims compared to associated historical product cost.
Research and Development	Research and Development Research and development costs are expensed as incurred and primarily include personnel costs, prototype expenses, which include the cost of fabrication mask costs not reasonably expected to be used in production manufacturing, and allocated facilities costs as well as depreciation of equipment used in research and development.
Advertising	Advertising The Company expenses advertising costs as incurred. Advertising expenses were $2.5 million, $1.8 million and $1.4 million for the years ended December 31, 2015, 2014 and 2013, respectively.
Operating Leases	Operating Leases The Company recognizes rent expense on a straight-line basis over the term of the lease. The difference between rent expense and rent paid is recorded as deferred rent in accrued expenses and other current and non-current liabilities on the consolidated balance sheets.
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) Comprehensive income (loss) includes all changes in equity that are not the result of transactions with stockholders. There were no components of comprehensive income (loss) which were excluded from the net income (loss) for the years ended December 31, 2015, 2014 and 2013, and, therefore, no separate statement of comprehensive income (loss) has been presented.
Foreign Currency Remeasurement	Foreign Currency Remeasurement The Company uses the United States dollar as the functional currency for its subsidiaries. Assets and liabilities denominated in non-U.S. dollars are remeasured into U.S. dollars at end-of-period exchange rates for monetary assets and liabilities, and historical exchange rates for nonmonetary assets and liabilities. Net revenue and expenses are remeasured at average exchange rates in effect during each period, except for those revenue, cost of sales and expenses related to the nonmonetary assets and liabilities, which are remeasured at historical exchange rates. The aggregate foreign exchange gains and losses, which are included in other, net in the consolidated statements of operations were not material for the years ended December 31, 2015, 2014 and 2013.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2015, the Financial Accounting Standards Board, or FASB, issued guidance to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax assets and liabilities be classified as non-current in a classified statement of financial position. The amendments in this update will apply to all entities that present a classified statement of financial position. The current requirement that deferred tax assets and liabilities of a tax paying component of an entity be offset and presented as a single amount is not affected by the amendments to this update. T he amendments to this update are effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the beginning of an interim or annual reporting period. The Company adopted this guidance as of December 31, 2015. This guidance did not have a material impact on the Company’s consolidated financial statements. In September 2015, the FASB issued an update to the business combinations standards simplifying the accounting for measurement-period adjustments. The amendments in this update require that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The amendments in this update require that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. The amendments in this update require an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The update is effective for interim and annual periods beginning after December 15, 2015. The amendments in this update should be applied prospectively to adjustments to provisional amounts that occur after the effective date of this update with earlier application permitted for financial statements that have not been issued. The Company does not expect that this guidance will have a material impact on its consolidated financial statements. In July 2015, the FASB issued guidance to simplify the measurement of inventory. The updated standard more closely aligns the measurement of inventory with that of International Financial Reporting Standards and amends the measurement standard from lower of cost or market to lower of cost or net realizable value. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods during the annual period and requires a prospective approach to adoption. Early adoption is permitted. The Company does not expect that this guidance will have a material impact on its consolidated financial statements. In May 2014, the FASB issued a new guidance on the recognition of revenue from contracts with customers, which includes a single set of rules and criteria for revenue recognition to be used across all industries. The new revenue guidance’s core principle is built on the contract between a vendor and a customer for the provision of goods and services. It attempts to depict the exchange of rights and obligations between the parties in the pattern of revenue recognition based on the consideration to which the vendor is entitled. To accomplish this objective, the guidance requires five basic steps: identify the contract with the customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when or as the entity satisfies a performance obligation. In August 2015, the FASB issued an update to defer the effective date by one year. This guidance is effective for annual reporting periods beginning after December 15, 2017, including interim periods during the annual period. Early adoption is allowed for annual reporting periods beginning after December 15, 2016. Different transition methods are available - full retrospective method and a modified retrospective (cumulative effect) approach. The Company has not selected the transition method and is currently evaluating the impact of the adoption of this guidance on its consolidated financial statements.

Organization and Significant 22

Organization and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Schedule of Property and Equipment Estimated Useful Lives	Estimated Software, design tools, computer and other equipment 1 to 5 years Test equipment and mask costs 1 to 3 years Furniture, office equipment and leasehold improvements 1 to 5 years
Percentage of Gross Accounts Receivable	Summarized below are individual customers whose accounts receivable balances were 10% or higher of the consolidated gross receivable: As of December 31, 2015 2014 Percentage of gross accounts receivable Customer A 16% 12% Customer B 20% 21% Customer C * 11% * Represents less than 10% of the gross accounts receivable for the respective period end.

Net Loss Per Common Share (Tabl

Net Loss Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Basic and Diluted Net Loss Per Common Share	The following table sets forth the computation of net loss per share: Year Ended December 31, 2015 2014 2013 (in thousands, except per share data) Net loss attributable to the Company $ (17,060 ) $ (15,295 ) $ (2,965 ) Weighted average common shares outstanding - basic 55,589 53,451 51,596 Dilutive effect of employee stock plans - - - Weighted average common shares outstanding - diluted 55,589 53,451 51,596 Net loss per common share, basic $ (0.31 ) $ (0.29 ) $ (0.06 ) Net loss per common share, diluted $ (0.31 ) $ (0.29 ) $ (0.06 )
Summary of Outstanding Options and Restricted Stock Units Excluded from Computation of Diluted Net Loss Per Common Share	The following outstanding options and restricted stock units were excluded from the computation of diluted net loss per common share for the periods presented because including them would have had an anti-dilutive effect: Year Ended December 31, 2015 2014 2013 (in thousands) Options to purchase common stock 2,028 2,626 3,552 Restricted stock units 2,194 2,465 1,776

Balance Sheet Components (Table

Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Inventories	Inventories As of December 31, 2015 2014 (in thousands) Work-in-process $ 33,701 $ 37,207 Finished goods 13,308 14,715 $ 47,009 $ 51,922
Property and Equipment, Net	Property and equipment, net As of December 31, 2015 2014 (in thousands) Test equipment and mask costs $ 71,021 $ 50,591 Software, design tools, computer and other equipment 62,331 53,686 Furniture, office equipment and leasehold improvements 5,755 2,500 139,107 106,777 Less: accumulated depreciation and amortization (74,430 ) (49,814 ) $ 64,677 $ 56,963
Other Accrued Expenses And Other Current Liabilities	Other accrued expenses and other current liabilities As of December 31, 2015 2014 (in thousands) Accrued compensation and related benefits $ 4,485 $ 4,855 Professional fees 1,018 1,029 Accrued royalties 761 638 Manufacturing rights payable (Note 12) 1,875 - Income tax payable 541 451 Other 763 809 $ 9,443 $ 7,782
Warranty Accrual	The following table presents a rollforward of the warranty liability, which is included within other accrued expenses and other current liabilities above: Year Ended December 31, 2015 2014 2013 (in thousands) Beginning balance $ 227 $ 167 $ 440 Accruals and adjustments 459 679 206 Settlements (350 ) (619 ) (479 ) Ending balance $ 336 $ 227 $ 167
Deferred Revenue	Deferred revenue As of December 31, 2015 2014 (in thousands) Services/support and maintenance $ 5,531 $ 5,769 Software license/subscription 785 516 $ 6,316 $ 6,285

Goodwill and Intangible Asset25

Goodwill and Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets, Net	Intangible assets, net As of December 31, 2015 Gross Accumulated Amortization Net Weighted average remaining amortization period (years) (in thousands) Technology licenses $ 70,521 $ (35,625 ) $ 34,896 6.10 Existing and core technology - product 41,711 (41,115 ) 596 0.99 Customer contracts and relationships 2,215 (2,215 ) - - Trade name 2,296 (2,296 ) - - Total amortizable intangible assets $ 116,743 $ (81,251 ) $ 35,492 6.01 As of December 31, 2014 Gross Accumulated Amortization Net Weighted average remaining amortization period (years) (in thousands) Technology licenses $ 64,002 $ (28,247 ) $ 35,755 7.07 Existing and core technology - product 42,085 (40,264 ) 1,821 1.39 Customer contracts and relationships 8,991 (8,965 ) 26 0.83 Trade name 2,296 (2,254 ) 42 0.17 Order backlog 640 (640 ) - - Total amortizable intangible assets $ 118,014 $ (80,370 ) $ 37,644 6.79
Estimated Future Amortization Expense From Amortizable Intangible Assets	The estimated future amortization expense of amortizable intangible assets is as follows (in thousands): 2016 $ 8,643 2017 6,626 2018 5,001 2019 4,092 2020 3,751 2021 and thereafter 7,379 $ 35,492

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Stockholders Equity Note [Abstract]
Summary of Stock Options Granted and Outstanding	Detail related to stock option activity is as follows: Number of Options Outstanding Weighted Average Exercise Price Balance as of December 31, 2012 4,197,704 $ 16.83 Options granted 242,375 37.15 Options exercised (723,047 ) 14.95 Options cancelled and forfeited (164,816 ) 34.36 Balance as of December 31, 2013 3,552,216 17.79 Options granted 165,000 38.78 Options exercised (1,082,914 ) 14.05 Options cancelled and forfeited (8,042 ) 28.46 Balance as of December 31, 2014 2,626,260 20.62 Options granted 87,178 64.70 Options exercised (685,439 ) 14.02 Options cancelled and forfeited - - Balance as of December 31, 2015 2,027,999 24.75
Summary Of Stock Options Outstanding	The following table summarizes information about stock options outstanding as of December 31, 2015: Outstanding Options Exercisable Options Exercise Prices Number of Shares Weighted Average Remaining Contractual Term Weighted Average Exercise Price Number of shares Weighted Average Exercise Price Aggregate Intrinsic Value $3.04 - $3.04 362,584 0.22 $ 3.04 362,584 $ 3.04 $5.42 - $8.52 14,126 1.01 7.35 14,126 7.35 $10.32 - $10.32 344,668 0.10 10.32 344,668 10.32 $13.50 - $24.16 312,675 0.90 22.44 312,675 22.44 $24.99 - $35.73 304,702 2.93 32.31 296,346 32.21 $37.63 - $37.63 409,961 3.20 37.42 342,967 37.38 $37.83 - $62.86 267,283 5.03 46.03 112,724 40.66 $76.38 - $76.38 12,000 6.46 76.38 6,000 76.38 $3.04 - $76.38 2,027,999 1.99 $ 24.75 1,792,090 $ 21.87 $ 83,200,687 Exercisable 1,792,090 1.58 $ 21.87 $ 78,633,864 Vested and expected to vest 2,009,482 1.96 $ 24.53 $ 82,880,538
Assumptions Of Fair Value Of Employee Option Grant Using Black-Scholes Option - Pricing Model	The fair value of each option grant for the years ended December 31, 2015, 2014 and 2013 were estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions below. Year Ended December 31, 2015 2014 2013 Risk-free interest rate 1.34% to 1.41% 1.26% to 1.47% 0.32% to 1.04% Expected life 3.77 to 4.58 years 3.77 to 4.53 years 3.77 to 4.53 years Dividend yield 0% 0% 0% Volatility 41.0% to 43.0% 43.8% to 45.1% 45.8% to 49.6%
Summary of Activity of Restricted Stock	A summary of the activity of restricted stock for the related periods are presented below : Number of Shares Weighted-Average Grant Date Fair Value Per Share Balance as of December 31, 2012 1,823,563 $ 33.17 Granted 1,119,570 36.32 Issued and released (867,213 ) 32.46 Cancelled and forfeited (299,750 ) 32.29 Balance as of December 31, 2013 1,776,170 35.64 Granted 1,970,094 41.32 Issued and released (1,154,123 ) 37.55 Cancelled and forfeited (127,394 ) 37.05 Balance as of December 31, 2014 2,464,747 39.21 Granted 955,592 61.82 Issued and released (1,115,525 ) 40.94 Cancelled and forfeited (110,746 ) 45.82 Balance as of December 31, 2015 2,194,068 47.85
Detail of Stock-Based Compensation Expense	The following table presents the detail of stock-based compensation expense amounts included in the consolidated statements of operations for each of the periods presented: Year Ended December 31, 2015 2014 2013 (in thousands) Cost of revenue $ 765 $ 954 $ 951 Research and development 29,085 32,328 18,577 Sales, general and administrative 18,447 19,177 15,070 $ 48,297 $ 52,459 $ 34,598

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Provision for Income Taxes and Effective Tax Rates	The following table presents the provision for income taxes and the effective tax rates: Year Ended December 31, 2015 2014 2013 (in thousands) Loss before income taxes $ (15,378 ) $ (24,182 ) $ (11,751 ) Provision for income taxes 1,682 1,633 1,937 Effective tax rate (10.9 )% (6.8 )% (16.5 )%
Components of Domestic and Foreign Loss Before Income Tax Expense	The domestic and foreign components of loss before income tax expense were as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Domestic $ (37,109 ) $ (42,318 ) $ (20,066 ) Foreign 21,731 18,136 8,315 $ (15,378 ) $ (24,182 ) $ (11,751 )
Schedule of Income Tax Expense	The provision for income taxes consists of the following: Year Ended December 31, 2015 2014 2013 (in thousands) Current tax provision (benefit) Domestic $ (15 ) $ 19 $ 10 Foreign 1,034 1,230 1,123 1,019 1,249 1,133 Deferred tax provision (benefit) Domestic 564 627 713 Foreign 99 (243 ) 91 663 384 804 Provision for income taxes $ 1,682 $ 1,633 $ 1,937
Schedule of Effective Tax Rate Differs from United States Federal Statutory Rate	The Company’s effective tax rate differs from the United States federal statutory rate as follows: Year Ended December 31, 2015 2014 2013 Income tax at statutory rate 35.0 % 35.0 % 35.0 % Stock compensation costs (13.1 ) 5.6 1.8 Other (0.1 ) 0.6 1.5 Convertible securities - (4.2 ) - State taxes, net of federal benefit (0.1 ) (0.4 ) (1.6 ) Foreign income inclusion in the U.S. (4.9 ) (0.5 ) (3.8 ) Research and development credits 42.6 24.2 48.0 Foreign tax rate differential 41.5 19.6 46.7 Change in valuation allowance (111.8 ) (86.7 ) (144.1 ) Total (10.9 )% (6.8 )% (16.5 )%
Schedule of Deferred Tax Assets and Liabilities	The tax effects of the temporary differences that give rise to deferred tax assets and liabilities are as follows: As of December 31, 2015 2014 (in thousands) Deferred tax assets: Tax credits $ 47,113 $ 38,354 Net operating loss carryforwards 40,325 44,975 Capitalized research and development 18,093 4,652 Intangible assets 6,374 3,881 Depreciation and amortization 1,970 1,355 Stock compensation 10,813 9,893 Other 2,845 2,832 Gross deferred tax assets 127,533 105,942 Less: valuation allowance (127,328 ) (105,638 ) Net deferred tax assets 205 304 Deferred tax liabilities: Intangible assets (3,400 ) (2,836 ) Net deferred tax liabilities $ (3,195 ) $ (2,532 ) Reported As Deferred tax assets, non-current $ 222 $ 318 Deferred tax liabilities, current - (14 ) Deferred tax liabilities, non-current (3,417 ) (2,836 ) Net deferred tax liabilities $ (3,195 ) $ (2,532 )
Summary of Activity Related to Unrecognized Tax Benefits	The following table summarizes the activity related to the unrecognized tax benefits: Year Ended December 31, 2015 2014 2013 (in thousands) Balance at beginning of the year $ 16,270 $ 14,625 $ 12,749 Gross increases (decreases) related to prior year's tax positions 398 199 (526 ) Gross increases related to current year's tax positions 3,138 1,446 2,402 Releases related to prior year's tax positions (97 ) - - Balance at the end of the year $ 19,709 $ 16,270 $ 14,625
Tax Benefit from Preferential Tax Rate Differential	Beginning in 2011, the Company is operating under tax incentives in Singapore, which are effective through February 2020. The tax incentives are conditional upon the Company meeting certain employment, revenue, and investment thresholds. The Company realized benefits from the reduced tax rate for the periods presented as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Provision for Singapore entity at statutory tax rate of 17% $ 811 $ 719 $ 615 Provision for (benefit from) Singapore entity in the consolidated statement of operations 310 303 (209 ) Benefit from preferential tax rate differential (501 ) (416 ) (824 ) Impact of tax benefits per basic and diluted share $ (0.01 ) $ (0.01 ) $ (0.02 )

Segment and Geographic Inform28

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Net Revenue by Markets	The net revenue by markets for the periods indicated was as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Enterprise network, data center and access and service provider markets $ 377,809 $ 341,056 $ 259,860 Broadband and consumer markets 34,935 31,922 44,133 $ 412,744 $ 372,978 $ 303,993
Net Revenue by Geography	Net revenue by geography for the periods indicated were as follows: Year Ended December 31, 2015 2014 2013 (in thousands) United States $ 128,431 $ 111,997 $ 90,537 China 100,980 93,045 77,965 Mexico 34,452 27,184 22,572 Korea 28,578 28,665 30,003 Taiwan 34,533 29,229 26,023 Finland 38,283 44,976 17,767 Germany 13,272 10,335 5,947 Other countries 34,215 27,547 33,179 Total $ 412,744 $ 372,978 $ 303,993
Tangible Long Lived Assets	The following table sets forth the tangible long lived assets, which consist of property and equipment, net by geographic regions: As of December 31, 2015 2014 (in thousands) United States $ 52,547 $ 49,856 All other countries 12,130 7,107 Total $ 64,677 $ 56,963

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Minimum Commitments Under Non-Cancelable Operating Leases and Capital Lease and Technology License Obligations	Minimum commitments under non-cancelable operating leases and capital lease and technology license obligations as of December 31, 2015 are as follows: Capital lease and technology license obligations Operating leases Total (in thousands) 2016 $ 21,766 $ 9,012 $ 30,778 2017 8,795 8,781 17,576 2018 1,075 8,947 10,022 2019 - 8,847 8,847 2020 - 8,966 8,966 2021 thereafter - 14,169 14,169 $ 31,636 $ 58,722 $ 90,358 Less: Interest component (3.75% annual rate) 1,170 Present value of minimum lease payment 30,466 Current portion of the obligations $ 20,608 Long-term portion of obligations $ 9,858

Selected Quarterly Consolidat30

Selected Quarterly Consolidated Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Consolidated Financial Data	The following table sets forth the Company’s unaudited consolidated statements of operations data for each of the quarters in the periods ended December 31, 2015 and 2014. The quarterly data have been prepared on the same basis as the audited consolidated financial statements. This should be read together with the consolidated financial statements and related notes included elsewhere in this Annual Report. Quarter Ended 2015 2014 December 31 September 30 June 30 March 31 December 31 September 30 June 30 March 31 (in thousands, except per share data) Net revenue $ 100,942 $ 105,063 $ 104,961 $ 101,778 $ 101,223 $ 97,833 $ 90,681 $ 83,241 Cost of revenue 34,092 36,203 37,673 35,799 38,402 35,710 33,897 30,350 Gross profit 66,850 68,860 67,288 65,979 62,821 62,123 56,784 52,891 Operating expenses: Research and development 47,764 45,367 52,225 58,422 55,108 40,459 38,834 37,289 Sales, general and administrative 19,397 18,522 20,336 20,671 19,314 18,141 17,017 15,932 Total operating expenses 67,161 63,889 72,561 79,093 74,422 58,600 55,851 53,221 Income (loss) from operations (311 ) 4,971 (5,273 ) (13,114 ) (11,601 ) 3,523 933 (330 ) Other expense, net: Interest expense (227 ) (216 ) (388 ) (410 ) (293 ) (387 ) (333 ) (459 ) Change in estimated fair value of notes payable and other - - - - - (103 ) (13,927 ) (858 ) Other, net (138 ) (173 ) (33 ) (66 ) (313 ) (116 ) (53 ) 135 Total other expense, net (365 ) (389 ) (421 ) (476 ) (606 ) (606 ) (14,313 ) (1,182 ) Income (loss) before income taxes (676 ) 4,582 (5,694 ) (13,590 ) (12,207 ) 2,917 (13,380 ) (1,512 ) Provision for income taxes 354 366 661 301 268 811 311 243 Net income (loss) (1,030 ) 4,216 (6,355 ) (13,891 ) (12,475 ) 2,106 (13,691 ) (1,755 ) Net loss attributable to non-controlling interest - - - - (444 ) (3,327 ) (2,647 ) (4,102 ) Net income (loss) attributable to the Company $ (1,030 ) $ 4,216 $ (6,355 ) $ (13,891 ) $ (12,031 ) $ 5,433 $ (11,044 ) $ 2,347 Earnings per share attributable to the Company: Net income (loss) per common share, basic $ (0.02 ) $ 0.08 $ (0.11 ) $ (0.25 ) $ (0.22 ) $ 0.10 $ (0.21 ) $ 0.04 Net income (loss) per common share, diluted $ (0.02 ) $ 0.07 $ (0.11 ) $ (0.25 ) $ (0.22 ) $ 0.10 $ (0.21 ) $ 0.04 (1) Research and development expense for the quarter ended March 31, 2015 included a charge of $7.5 million related to a manufacturing rights licensing fee due to a third party vendor. (2) Research and development expense and sales, general and administrative expenses for the quarter ended December 31, 2014 include stock-based compensation expense and related taxes of $8.8 million and $1.1 million, respectively, pursuant to the merger agreement with Xpliant. (3) A charge related to the change in estimated fair value of convertible notes and derivative feature of convertible security held by non-controlling interest for the quarters ended March 31, June 30 and September 30, 2014.

Organization and Significant 31

Organization and Significant Accounting Policies (Schedule of Property and Equipment Estimated Useful Lives) (Detail)	12 Months Ended
	Dec. 31, 2015
Minimum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	12 months
Maximum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	24 months
Software, Design Tools, Computer and Other Equipment | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	1 year
Software, Design Tools, Computer and Other Equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	5 years
Test Equipment and Mask Costs | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	1 year
Test Equipment and Mask Costs | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	3 years
Furniture, Office Equipment and Leasehold Improvements | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	1 year
Furniture, Office Equipment and Leasehold Improvements | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, Estimated Useful Lives, years	5 years

Organization and Significant 32

Organization and Significant Accounting Policies (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Organization And Significant Accounting Policies [Line Items]
Warranty period	1 year
Advertising expenses	$ 2.5	$ 1.8	$ 1.4
Sales Revenue, Net | Customer Concentration Risk | Original Equipment Manufacturers
Organization And Significant Accounting Policies [Line Items]
Percentage of total net revenue	42.90%	44.40%
Sales Revenue, Net | Customer Concentration Risk | Customer D
Organization And Significant Accounting Policies [Line Items]
Percentage of total net revenue			18.60%
Minimum
Organization And Significant Accounting Policies [Line Items]
Depreciation period	12 months
Maximum
Organization And Significant Accounting Policies [Line Items]
Depreciation period	24 months

Organization and Significant 33

Organization and Significant Accounting Policies (Percentage of Gross Accounts Receivable) (Detail) - Accounts Receivable - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Customer A
Accounts Receivable [Line Items]
Percentage of gross accounts receivable	16.00%	12.00%
Customer B
Accounts Receivable [Line Items]
Percentage of gross accounts receivable	20.00%	21.00%
Customer C
Accounts Receivable [Line Items]
Percentage of gross accounts receivable		11.00%

Net Loss Per Common Share (Basi

Net Loss Per Common Share (Basic and Diluted Net Loss Per Common Share) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net loss attributable to the Company	$ (1,030)	$ 4,216	$ (6,355)	$ (13,891)	$ (12,031)	$ 5,433	$ (11,044)	$ 2,347	$ (17,060)	$ (15,295)	$ (2,965)
Weighted average common shares outstanding - basic									55,589	53,451	51,596
Weighted average common shares outstanding - diluted									55,589	53,451	51,596
Net loss per common share, basic	$ (0.02)	$ 0.08	$ (0.11)	$ (0.25)	$ (0.22)	$ 0.10	$ (0.21)	$ 0.04	$ (0.31)	$ (0.29)	$ (0.06)
Net loss per common share, diluted	$ (0.02)	$ 0.07	$ (0.11)	$ (0.25)	$ (0.22)	$ 0.10	$ (0.21)	$ 0.04	$ (0.31)	$ (0.29)	$ (0.06)

Net Loss Per Common Share (Summ

Net Loss Per Common Share (Summary of Outstanding Options and Restricted Stock Units Excluded from Computation of Diluted Net Loss Per Common Share) (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Options To Purchase Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted net income (loss) per common share	2,028	2,626	3,552
Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted net income (loss) per common share	2,194	2,465	1,776

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Money Market Funds And Short Term Bank Deposits | Fair Value, Inputs, Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	$ 102.2	$ 93.2

Balance Sheet Components (Inven

Balance Sheet Components (Inventories) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Inventory Net [Abstract]
Work-in-process	$ 33,701	$ 37,207
Finished goods	13,308	14,715
Inventories	$ 47,009	$ 51,922

Balance Sheet Components (Prope

Balance Sheet Components (Property and Equipment, Net) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 139,107	$ 106,777
Less: accumulated depreciation and amortization	(74,430)	(49,814)
Property and equipment, net	64,677	56,963
Test Equipment and Mask Costs
Property Plant And Equipment [Line Items]
Property and equipment, gross	71,021	50,591
Software, Design Tools, Computer and Other Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	62,331	53,686
Furniture, Office Equipment and Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 5,755	$ 2,500

Balance Sheet Components (Narra

Balance Sheet Components (Narrative) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property Plant And Equipment [Line Items]
Depreciation and amortization expense	$ 32,900	$ 19,500	$ 17,700
Depreciation and amortization	42,442	34,087	40,993
Property and equipment, net	64,677	56,963
Property and Equipment Under Capital Lease and Certain Financing Arrangements
Property Plant And Equipment [Line Items]
Capital lease and certain financing arrangements	25,300	35,800
Amortization expense related to assets under capital lease and certain financing arrangements	14,700	9,500	6,500
Masks
Property Plant And Equipment [Line Items]
Property and equipment, additions	8,900	5,900	3,600
Depreciation and amortization	4,900	2,600	$ 4,500
Property and equipment, net	$ 9,600	$ 5,600

Balance Sheet Components (Other

Balance Sheet Components (Other Accrued Expenses and Other Current Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued compensation and related benefits	$ 4,485	$ 4,855
Professional fees	1,018	1,029
Accrued royalties	761	638
Manufacturing rights payable (Note 12)	1,875
Income tax payable	541	451
Other	763	809
Accrued expenses and other current liabilities	$ 9,443	$ 7,782

Balance Sheet Components (Warra

Balance Sheet Components (Warranty Accrual) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Product Warranty Accrual, Balance Sheet Classification [Abstract]
Beginning balance	$ 227	$ 167	$ 440
Accruals and adjustments	459	679	206
Settlements	(350)	(619)	(479)
Ending balance	$ 336	$ 227	$ 167

Balance Sheet Components (Defer

Balance Sheet Components (Deferred Revenue) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 6,316	$ 6,285
Service / Support and Maintenance
Deferred Revenue Arrangement [Line Items]
Deferred revenue	5,531	5,769
Software License / Subscription
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 785	$ 516

Business Combination and Dive43

Business Combination and Divestitures (Narrative) (Detail) - USD ($) $ in Thousands

Apr. 29, 2015

Oct. 31, 2014

Jan. 31, 2013

Sep. 30, 2012

Mar. 31, 2015

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2014

Dec. 31, 2014

Oct. 08, 2014

Business Acquisition [Line Items]

Convertible note to third party investor paid by Variable Interest Entity

$ 29,800

$ 1,000

Change in estimated fair value of notes payable and other

$ 103

$ 13,927

$ 858

14,888

Settlement to common shareholders of an acquired entity

$ 3,630

Proceeds received from disposition of certain consumer product assets

$ 3,300

$ 2,400

400

1,000

1,000

Gain (loss) on disposition of certain consumer product assets

$ 400

1,000

1,000

$ (2,700)

Net book value of assets held for sale

$ 2,600

Gain on sale of held for sale assets

747

Xpliant, Inc

Business Acquisition [Line Items]

Cash advances in exchange for notes

$ 85,800

Change in estimated fair value of notes payable and other

$ 14,900

Xpliant, Inc | Nine Convertible Notes Receivable

Business Acquisition [Line Items]

Cash advances in exchange for notes

10,000

Interest rate on notes receivable

6.00%

Convertible notes receivable maturity date

Aug. 31, 2014

Xpliant, Inc | Promissory Notes

Business Acquisition [Line Items]

Cash advances in exchange for notes

$ 75,800

Promissory note, cancellation date

Jul. 31, 2015

Xpliant, Inc | Promissory Notes | Minimum

Business Acquisition [Line Items]

Promissory note, maturity date

Apr. 30, 2015

Xpliant, Inc | Promissory Notes | Maximum

Business Acquisition [Line Items]

Promissory note, maturity date

Mar. 31, 2016

Xpliant, Inc | Several Convertible Note Receivable | Non-controlling Interest

Business Acquisition [Line Items]

Interest rate on notes receivable

6.00%

Convertible notes receivable maturity date

Aug. 31, 2014

Cash advances in exchange for notes

$ 13,000

Notes payable and other

$ 2,900

Convertible note to third party investor paid by Variable Interest Entity

$ 1,000

Xpliant

Business Acquisition [Line Items]

Settlement to common shareholders of an acquired entity

$ 1,100

$ 2,500

Original transaction agreement amended date

Oct. 8, 2014

Original transaction agreement second amended date

Mar. 31, 2015

Business combination agreement date

Jul. 30, 2014

Percentage of outstanding securities settled in amendment agreement

30.00%

70.00%

Cash consideration to settle the non-controlling interest convertible notes and convertible security holder

$ 30,800

Cash bonus to employees

$ 1,700

Share issued under merger agreement

193,000

Fair value of shares issued under merger agreement

$ 8,700

Goodwill and Intangible Asset44

Goodwill and Intangible Assets, Net (Narrative) (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)Reporting_unit	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)$ / shares
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	$ 71,478	$ 71,478
Number of reporting units | Reporting_unit	1
Amortization expense	$ 9,600	$ 14,600	$ 23,300
Amortization expense due to change in estimated useful lives			$ 6,200
Earnings per share attributable to the company | $ / shares			$ 0.12

Goodwill and Intangible Asset45

Goodwill and Intangible Assets, Net (Intangible Assets, Net) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross	$ 116,743	$ 118,014
Finite-lived intangible assets, Accumulated Amortization	(81,251)	(80,370)
Finite-lived intangible assets, Net	$ 35,492	$ 37,644
Weighted average remaining amortization period (years)	6 years 4 days	6 years 9 months 15 days
Technology licenses
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross	$ 70,521	$ 64,002
Finite-lived intangible assets, Accumulated Amortization	(35,625)	(28,247)
Finite-lived intangible assets, Net	$ 34,896	$ 35,755
Weighted average remaining amortization period (years)	6 years 1 month 6 days	7 years 26 days
Existing and core technology - product
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross	$ 41,711	$ 42,085
Finite-lived intangible assets, Accumulated Amortization	(41,115)	(40,264)
Finite-lived intangible assets, Net	$ 596	$ 1,821
Weighted average remaining amortization period (years)	11 months 27 days	1 year 4 months 21 days
Customer contracts and relationships
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross	$ 2,215	$ 8,991
Finite-lived intangible assets, Accumulated Amortization	(2,215)	(8,965)
Finite-lived intangible assets, Net		$ 26
Weighted average remaining amortization period (years)		9 months 29 days
Trade name
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross	2,296	$ 2,296
Finite-lived intangible assets, Accumulated Amortization	$ (2,296)	(2,254)
Finite-lived intangible assets, Net		$ 42
Weighted average remaining amortization period (years)		2 months 1 day
Order backlog
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross		$ 640
Finite-lived intangible assets, Accumulated Amortization		$ (640)

Goodwill and Intangible Asset46

Goodwill and Intangible Assets, Net (Estimated Future Amortization Expense from Amortizable Intangible Assets) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
2,016	$ 8,643
2,017	6,626
2,018	5,001
2,019	4,092
2,020	3,751
2021 and thereafter	7,379
Finite-lived intangible assets, Net	$ 35,492	$ 37,644

Restructuring Accrual (Narrativ

Restructuring Accrual (Narrative) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost And Reserve [Line Items]
Lease expiration period	Oct. 1, 2022
Accrued restructuring related payables	$ 0	$ 0
Severance And Other Benefits
Restructuring Cost And Reserve [Line Items]
Additional restructuring accrual		1,400,000	$ 1,400,000
Excess Facility Related Cost
Restructuring Cost And Reserve [Line Items]
Additional restructuring accrual		$ 200,000
Lease expiration period	Dec. 31, 2014

Stockholders Equity (Narrative)

Stockholders Equity (Narrative) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares authorized	200,000,000	200,000,000
Common stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares outstanding	0	0
Unvested shares (Outstanding)	0	0
Aggregate intrinsic value	$ 37,400,000	$ 36,200,000	$ 16,000,000
Stock-based compensation expense	$ 48,297,000	$ 52,459,000	$ 34,598,000
2007 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
The annual maximum increase of stock reserve for issuance	5,000,000
Common stock, shares reserved for issuance increase annually, number of years	10 years
Common stock, shares reserved for issuance, start date	Jan. 1, 2008
Common stock, shares reserved for issuance, end date	Jan. 1, 2017
Common stock, shares reserved for issuance increase annually, percentage	5.00%
The maximum number of shares that may be issued pursuant to the exercise of incentive stock options	10,000,000
Shares reserved for issuance	10,106,853
Number of shares granted	16,122,851
Stock incentive plan shares vesting six months after the date of grant	12.50%
Stock incentive plan shares vesting monthly after six months	2.08%
Compensation expense vesting period (in years)	3 years 6 months
2007 Stock Incentive Plan | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock incentive plan term of awards expiration period	7 years
2007 Stock Incentive Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock incentive plan term of awards expiration period	10 years
2007 Stock Incentive Plan | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense vesting period (in years)	4 years
2001 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock incentive plan shares vesting six months after the date of grant	12.50%
Stock incentive plan shares vesting monthly after six months	2.08%
Stock incentive plan term of awards expiration period	10 years
Common Stock, shares reserved for issuance	0
2001 Stock Incentive Plan | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense vesting period (in years)	3 years 6 months
2001 Stock Incentive Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense vesting period (in years)	4 years 6 months
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Estimated weighted-average grant date fair value of options granted	$ 23.79	$ 14.63	$ 14.91
Unrecognized compensation cost, net of estimated forfeitures	$ 3,400,000
Unrecognized compensation cost expected to be recognized over weighted average period (in years)	2 years 26 days
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost, net of estimated forfeitures	$ 79,000,000
Unrecognized compensation cost expected to be recognized over weighted average period (in years)	2 years 3 months 26 days
Total intrinsic value of the RSU's issued at period end	$ 144,200,000
Restricted Stock Units (RSUs) | One-Year Performance Officers
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense vesting period (in years)	1 year
RSU's granted	$ 2,100,000
Stock-based compensation expense	$ 0
Restricted Stock Units (RSUs) | Two-Year Performance
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense vesting period (in years)	2 years
RSU's granted	$ 700,000
Restricted Stock Units (RSUs) | Four-Year Performance
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense vesting period (in years)	4 years
Number of consecutive trading period	30 days
Market-Performance Based RSU's
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSU's granted	$ 1,500,000

Stockholders Equity (Summary of

Stockholders Equity (Summary of Stock Options Granted and Outstanding) (Detail) - 2007 Equity Incentive Plan and 2001 Stock Incentive Plan - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Options Outstanding, Beginning balance	2,626,260	3,552,216	4,197,704
Number of Options Outstanding, Options granted	87,178	165,000	242,375
Number of Options Outstanding, Options exercised	(685,439)	(1,082,914)	(723,047)
Number of Options Outstanding, Options cancelled and forfeited		(8,042)	(164,816)
Number of Options Outstanding, Ending balance	2,027,999	2,626,260	3,552,216
Weighted Average Exercise Price, Beginning balance	$ 20.62	$ 17.79	$ 16.83
Weighted Average Exercise Price, Options granted	64.70	38.78	37.15
Weighted Average Exercise Price, Options exercised	14.02	14.05	14.95
Weighted Average Exercise Price, Options cancelled and forfeited		28.46	34.36
Weighted Average Exercise Price, Ending balance	$ 24.75	$ 20.62	$ 17.79

Stockholders Equity (Summary 50

Stockholders Equity (Summary Of Stock Options Outstanding) (Detail)	12 Months Ended
	Dec. 31, 2015USD ($)$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercisable Options, Number of Shares | shares	1,792,090
Exercisable Options, Weighted Average Exercise Price	$ 21.87
Exercisable, Weighted Average Remaining Contractual Term	1 year 6 months 29 days
Exercisable, Aggregate Intrinsic Value | $	$ 78,633,864
Outstanding Options, Vested and expected to vest, Number of Shares | shares	2,009,482
Outstanding Options, Vested and expected to vest, Weighted Average Remaining Contractual Term	1 year 11 months 16 days
Outstanding Options, Vested and expected to vest, Weighted Average Exercise price	$ 24.53
Vested and expected to vest, Aggregate Intrinsic Value | $	$ 82,880,538
3.04 - 3.04
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	$ 3.04
Exercise Prices, upper range limit	$ 3.04
Outstanding Options, Number of Shares | shares	362,584
Outstanding Options, Weighted Average Remaining Contractual Term	2 months 19 days
Outstanding Options, Weighted Average Exercise Price	$ 3.04
Exercisable Options, Number of Shares | shares	362,584
Exercisable Options, Weighted Average Exercise Price	$ 3.04
5.42 - 8.52
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	5.42
Exercise Prices, upper range limit	$ 8.52
Outstanding Options, Number of Shares | shares	14,126
Outstanding Options, Weighted Average Remaining Contractual Term	1 year 4 days
Outstanding Options, Weighted Average Exercise Price	$ 7.35
Exercisable Options, Number of Shares | shares	14,126
Exercisable Options, Weighted Average Exercise Price	$ 7.35
10.32 - 10.32
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	10.32
Exercise Prices, upper range limit	$ 10.32
Outstanding Options, Number of Shares | shares	344,668
Outstanding Options, Weighted Average Remaining Contractual Term	1 month 6 days
Outstanding Options, Weighted Average Exercise Price	$ 10.32
Exercisable Options, Number of Shares | shares	344,668
Exercisable Options, Weighted Average Exercise Price	$ 10.32
13.50 - 24.16
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	13.50
Exercise Prices, upper range limit	$ 24.16
Outstanding Options, Number of Shares | shares	312,675
Outstanding Options, Weighted Average Remaining Contractual Term	10 months 24 days
Outstanding Options, Weighted Average Exercise Price	$ 22.44
Exercisable Options, Number of Shares | shares	312,675
Exercisable Options, Weighted Average Exercise Price	$ 22.44
24.99 - 35.73
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	24.99
Exercise Prices, upper range limit	$ 35.73
Outstanding Options, Number of Shares | shares	304,702
Outstanding Options, Weighted Average Remaining Contractual Term	2 years 11 months 5 days
Outstanding Options, Weighted Average Exercise Price	$ 32.31
Exercisable Options, Number of Shares | shares	296,346
Exercisable Options, Weighted Average Exercise Price	$ 32.21
37.63 - 37.63
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	37.63
Exercise Prices, upper range limit	$ 37.63
Outstanding Options, Number of Shares | shares	409,961
Outstanding Options, Weighted Average Remaining Contractual Term	3 years 2 months 12 days
Outstanding Options, Weighted Average Exercise Price	$ 37.42
Exercisable Options, Number of Shares | shares	342,967
Exercisable Options, Weighted Average Exercise Price	$ 37.38
37.83 - 62.86
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	37.83
Exercise Prices, upper range limit	$ 62.86
Outstanding Options, Number of Shares | shares	267,283
Outstanding Options, Weighted Average Remaining Contractual Term	5 years 11 days
Outstanding Options, Weighted Average Exercise Price	$ 46.03
Exercisable Options, Number of Shares | shares	112,724
Exercisable Options, Weighted Average Exercise Price	$ 40.66
76.38 - 76.38
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	76.38
Exercise Prices, upper range limit	$ 76.38
Outstanding Options, Number of Shares | shares	12,000
Outstanding Options, Weighted Average Remaining Contractual Term	6 years 5 months 16 days
Outstanding Options, Weighted Average Exercise Price	$ 76.38
Exercisable Options, Number of Shares | shares	6,000
Exercisable Options, Weighted Average Exercise Price	$ 76.38
3.04 - 76.38
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Prices, lower range limit	3.04
Exercise Prices, upper range limit	$ 76.38
Outstanding Options, Number of Shares | shares	2,027,999
Outstanding Options, Weighted Average Remaining Contractual Term	1 year 11 months 27 days
Outstanding Options, Weighted Average Exercise Price	$ 24.75
Exercisable Options, Number of Shares | shares	1,792,090
Exercisable Options, Weighted Average Exercise Price	$ 21.87
Aggregate Intrinsic Value | $	$ 83,200,687

Stockholders Equity (Assumption

Stockholders Equity (Assumptions of Fair Value of Employee Option Grant Using Black-Scholes Option Pricing Model) (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	1.34%	1.26%	0.32%
Expected life	3 years 9 months 7 days	3 years 9 months 7 days	3 years 9 months 7 days
Volatility	41.00%	43.80%	45.80%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	1.41%	1.47%	1.04%
Expected life	4 years 6 months 29 days	4 years 6 months 11 days	4 years 6 months 11 days
Volatility	43.00%	45.10%	49.60%

Stockholders Equity (Summary 52

Stockholders Equity (Summary of Activity of Restricted Stock) (Detail) - 2007 Stock Incentive Plan - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Beginning balance	2,464,747	1,776,170	1,823,563
Number of Shares, Granted	955,592	1,970,094	1,119,570
Number of Shares, Issued and released	(1,115,525)	(1,154,123)	(867,213)
Number of Shares, Cancelled and forfeited	(110,746)	(127,394)	(299,750)
Number of Shares, Ending balance	2,194,068	2,464,747	1,776,170
Weighted-Average Grant Date Fair Value Per Share, Beginning balance	$ 39.21	$ 35.64	$ 33.17
Weighted-Average Grant Date Fair Value Per Share, Granted	61.82	41.32	36.32
Weighted-Average Grant Date Fair Value Per Share, Issued and released	40.94	37.55	32.46
Weighted-Average Grant Date Fair Value Per Share, Cancelled and forfeited	45.82	37.05	32.29
Weighted-Average Grant Date Fair Value Per Share, Ending balance	$ 47.85	$ 39.21	$ 35.64

Stockholders Equity (Detail of

Stockholders Equity (Detail of Stock-Based Compensation Expense) (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]
Stock-based compensation expense	$ 48,297	$ 52,459	$ 34,598
Cost of revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	765	954	951
Research and development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	29,085	32,328	18,577
Sales, general and administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 18,447	$ 19,177	$ 15,070

Income Taxes (Provision for Inc

Income Taxes (Provision for Income Taxes and Effective Tax Rates) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Loss before income taxes	$ (676)	$ 4,582	$ (5,694)	$ (13,590)	$ (12,207)	$ 2,917	$ (13,380)	$ (1,512)	$ (15,378)	$ (24,182)	$ (11,751)
Provision for income taxes	$ 354	$ 366	$ 661	$ 301	$ 268	$ 811	$ 311	$ 243	$ 1,682	$ 1,633	$ 1,937
Effective tax rate									(10.90%)	(6.80%)	(16.50%)

Income Taxes (Components of Dom

Income Taxes (Components of Domestic and Foreign Loss Before Income Tax Expense) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Domestic									$ (37,109)	$ (42,318)	$ (20,066)
Foreign									21,731	18,136	8,315
Loss before income taxes	$ (676)	$ 4,582	$ (5,694)	$ (13,590)	$ (12,207)	$ 2,917	$ (13,380)	$ (1,512)	$ (15,378)	$ (24,182)	$ (11,751)

Income Taxes (Schedule of Incom

Income Taxes (Schedule of Income Tax Expense) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current tax provision (benefit), Domestic									$ (15)	$ 19	$ 10
Current tax provision (benefit), Foreign									1,034	1,230	1,123
Current tax provision (benefit), total									1,019	1,249	1,133
Deferred tax provision (benefit), Domestic									564	627	713
Deferred tax provision (benefit), Foreign									99	(243)	91
Deferred tax provision (benefit), total									663	384	804
Provision for (benefit from) income taxes	$ 354	$ 366	$ 661	$ 301	$ 268	$ 811	$ 311	$ 243	$ 1,682	$ 1,633	$ 1,937

Income Taxes (Schedule of Effec

Income Taxes (Schedule of Effective Tax Rate Differs from United States Federal Statutory Rate) (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income tax at statutory rate	35.00%	35.00%	35.00%
Stock compensation costs	(13.10%)	5.60%	1.80%
Other	(0.10%)	0.60%	1.50%
Convertible securities		(4.20%)
State taxes, net of federal benefit	(0.10%)	(0.40%)	(1.60%)
Foreign income inclusion in the U.S.	(4.90%)	(0.50%)	(3.80%)
Research and development credits	42.60%	24.20%	48.00%
Foreign tax rate differential	41.50%	19.60%	46.70%
Change in valuation allowance	(111.80%)	(86.70%)	(144.10%)
Effective tax rate	(10.90%)	(6.80%)	(16.50%)

Income Taxes (Schedule of Defer

Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Deferred tax assets, Tax credits	$ 47,113	$ 38,354
Deferred tax assets, Net operating loss carryforwards	40,325	44,975
Deferred tax assets, Capitalized research and development	18,093	4,652
Deferred tax assets, Intangible assets	6,374	3,881
Deferred tax assets, Depreciation and amortization	1,970	1,355
Deferred tax assets, Stock compensation	10,813	9,893
Deferred tax assets, Other	2,845	2,832
Gross deferred tax assets	127,533	105,942
Less: valuation allowance	(127,328)	(105,638)
Net deferred tax assets	205	304
Deferred tax liabilities, Intangible assets	(3,400)	(2,836)
Net deferred tax liabilities	(3,195)	(2,532)
Deferred tax assets, non-current	222	318
Deferred tax liabilities, current		(14)
Deferred tax liabilities, non-current	$ (3,417)	$ (2,836)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Line Items]
Stock-based compensation, stock option benefits recorded to equity	$ 83.1
Tax credit carryforwards, various miscellaneous	0.9
Undistributed earnings of foreign subsidiary	38.3	$ 4.5
Unrecognized tax benefit that would impact effective tax rate	$ 1
California Franchise Tax Board
Income Tax Disclosure [Line Items]
Tax year open to examination	2,000
Tax Year 2011
Income Tax Disclosure [Line Items]
Tax audit year	2,011
Tax Year 2012
Income Tax Disclosure [Line Items]
Tax audit year	2,012
Tax Year 2013
Income Tax Disclosure [Line Items]
Tax audit year	2,013
Federal
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 371.1
Net operating loss carryforwards, expire year	Jan. 1, 2020
Tax credit carryforwards, research and development	$ 40.7
Tax credit carryforwards, expire year	Jan. 1, 2020
Federal | Internal Revenue Service
Income Tax Disclosure [Line Items]
Tax year open to examination	2,000
State
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 200.1
Net operating loss carryforwards, expire year	Jan. 1, 2016
Tax credit carryforwards, research and development	$ 36.2
Tax credit carryforwards, expire year	Jan. 1, 2016
Excess windfall deduction | Federal
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 214.3
Excess windfall deduction | State
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 130.5

Income Taxes (Summary of Activi

Income Taxes (Summary of Activity Related to Unrecognized Tax Benefits) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Balance at beginning of the year	$ 16,270	$ 14,625	$ 12,749
Gross increases (decreases) related to prior year's tax positions	398	199	(526)
Gross increases related to current year's tax positions	3,138	1,446	2,402
Releases related to prior year's tax positions	(97)
Balance at the end of the year	$ 19,709	$ 16,270	$ 14,625

Income Taxes (Benefits from the

Income Taxes (Benefits from the Reduced Tax Rate) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Line Items]
Provision for (benefit from) Singapore entity in the consolidated statement of operations	$ 354	$ 366	$ 661	$ 301	$ 268	$ 811	$ 311	$ 243	$ 1,682	$ 1,633	$ 1,937
SINGAPORE
Income Tax Disclosure [Line Items]
Provision for Singapore entity at statutory tax rate of 17%									811	719	615
Provision for (benefit from) Singapore entity in the consolidated statement of operations									310	303	(209)
Benefit from preferential tax rate differential									$ (501)	$ (416)	$ (824)
Impact of tax benefits per basic and diluted share									$ (0.01)	$ (0.01)	$ (0.02)

Income Taxes (Benefits from t62

Income Taxes (Benefits from the Reduced Tax Rate (Parenthetical)) (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Line Items]
Income tax at statutory rate	35.00%	35.00%	35.00%
SINGAPORE
Income Tax Disclosure [Line Items]
Income tax at statutory rate	17.00%

Retirement Plan (Narrative) (De

Retirement Plan (Narrative) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]
Matching contribution by employer percentage	50.00%
Employer defined contribution on per employee	$ 2,000
Defined contribution (401K match) for the period	1,100,000	$ 1,000,000	$ 800,000
Non-current liabilities on defined benefit plan	$ 400,000	$ 500,000

Segment and Geographic Inform64

Segment and Geographic Information - (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2015SegmentMarket
Segment Reporting [Abstract]
Number of operating segments | Segment	1
Number of markets | Market	2

Segment and Geographic Inform65

Segment and Geographic Information (Net Revenue by Markets) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net revenue	$ 100,942	$ 105,063	$ 104,961	$ 101,778	$ 101,223	$ 97,833	$ 90,681	$ 83,241	$ 412,744	$ 372,978	$ 303,993
Enterprise Network, Data Center and Access and Service Provider Markets
Segment Reporting Information [Line Items]
Net revenue									377,809	341,056	259,860
Broadband and Consumer Markets
Segment Reporting Information [Line Items]
Net revenue									$ 34,935	$ 31,922	$ 44,133

Segment and Geographic Inform66

Segment and Geographic Information (Net Revenue by Geography) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net revenue	$ 100,942	$ 105,063	$ 104,961	$ 101,778	$ 101,223	$ 97,833	$ 90,681	$ 83,241	$ 412,744	$ 372,978	$ 303,993
United States
Segment Reporting Information [Line Items]
Net revenue									128,431	111,997	90,537
China
Segment Reporting Information [Line Items]
Net revenue									100,980	93,045	77,965
Mexico
Segment Reporting Information [Line Items]
Net revenue									34,452	27,184	22,572
Korea
Segment Reporting Information [Line Items]
Net revenue									28,578	28,665	30,003
Taiwan
Segment Reporting Information [Line Items]
Net revenue									34,533	29,229	26,023
Finland
Segment Reporting Information [Line Items]
Net revenue									38,283	44,976	17,767
Germany
Segment Reporting Information [Line Items]
Net revenue									13,272	10,335	5,947
Other Countries
Segment Reporting Information [Line Items]
Net revenue									$ 34,215	$ 27,547	$ 33,179

Segment and Geographic Inform67

Segment and Geographic Information (Tangible Long Lived Assets) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Property and equipment, net	$ 64,677	$ 56,963
United States
Segment Reporting Information [Line Items]
Property and equipment, net	52,547	49,856
All Other Countries
Segment Reporting Information [Line Items]
Property and equipment, net	$ 12,130	$ 7,107

Commitments and Contingencies68

Commitments and Contingencies (Narrative) (Detail) $ in Millions	Jan. 30, 2015USD ($)	Jul. 31, 2015USD ($)Installments	Oct. 31, 2014USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Mar. 30, 2015Installments
Disclosure Commitments And Contingencies Narrative Detail [Line Items]
Lease expiration period					Oct. 1, 2022
Operating leases, rent expense					$ 8	$ 6.4	$ 5.1
Aggregate billings for the reported exports under exposure	$ 0.5
Xpliant, Inc
Disclosure Commitments And Contingencies Narrative Detail [Line Items]
Number of equal installments | Installments								4
Manufacturing rights licensing fee				$ 7.5
License fee periodic payment description					The manufacturing rights licensing fee is payable in 4 equal quarterly payments, with the first installment payment due on April 29, 2015 and each of the subsequent three installment payments being due on the first day of the following calendar quarter.
Royalty fee periodic payment description					The royalty shall be payable within 30 days after the end of each calendar quarter following the sale.
Capital Lease
Disclosure Commitments And Contingencies Narrative Detail [Line Items]
Lease expiration period			Aug. 31, 2017
Long-term purchase commitment, amount			$ 28.5
Purchase agreement description					Company entered into a new purchase agreement with a third party vendor for $28.5 million, payable in installments that mature in August 2017 in exchange for certain design tools.
Software License Acquisition
Disclosure Commitments And Contingencies Narrative Detail [Line Items]
Long-term purchase commitment, amount		$ 4.3
Number of equal installments | Installments		12
Software License Acquisition | Flexible Spending Program
Disclosure Commitments And Contingencies Narrative Detail [Line Items]
Long-term purchase commitment, amount					$ 6
Settlement agreement payment frequency installment period					2 years

Commitments and Contingencies69

Commitments and Contingencies (Minimum Commitments Under Non-Cancelable Operating Leases and Capital Lease and Technology License Obligations) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Total capital lease, technology license and operating lease obligations
Current portion of the obligations	$ 20,608	$ 23,002
Long-term portion of obligations	9,858	$ 22,894
Total	90,358
2,016	30,778
2,017	17,576
2,018	10,022
2,019	8,847
2,020	8,966
2021 thereafter	14,169
Unpaid capital expenditures included in capital lease and technology license obligations
Total capital lease, technology license and operating lease obligations
2,016	21,766
2,017	8,795
2,018	1,075
Total	31,636
Less: Interest component (3.75% annual rate)	1,170
Present value of minimum lease payment	30,466
Operating Leases
Total capital lease, technology license and operating lease obligations
2,016	9,012
2,017	8,781
2,018	8,947
2,019	8,847
2,020	8,966
2021 thereafter	14,169
Total	$ 58,722

Commitments and Contingencies70

Commitments and Contingencies (Minimum Commitments Under Non-Cancelable Operating Leases and Capital Lease and Technology License Obligations) (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2015
Unpaid capital expenditures included in capital lease and technology license obligations
Total capital lease, technology license and operating lease obligations
Interest component	3.75%

Selected Quarterly Consolidat71

Selected Quarterly Consolidated Financial Data (Unaudited) (Selected Quarterly Consolidated Financial Data) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Net revenue	$ 100,942	$ 105,063	$ 104,961	$ 101,778	$ 101,223	$ 97,833	$ 90,681	$ 83,241	$ 412,744	$ 372,978	$ 303,993
Cost of revenue	34,092	36,203	37,673	35,799	38,402	35,710	33,897	30,350	143,767	138,359	114,679
Gross profit	66,850	68,860	67,288	65,979	62,821	62,123	56,784	52,891	268,977	234,619	189,314
Research and development	47,764	45,367	52,225	58,422	55,108	40,459	38,834	37,289	203,778	171,690	134,596
Sales, general and administrative	19,397	18,522	20,336	20,671	19,314	18,141	17,017	15,932	78,926	70,404	64,088
Total operating expenses	67,161	63,889	72,561	79,093	74,422	58,600	55,851	53,221	282,704	242,094	198,684
Loss from operations	(311)	4,971	(5,273)	(13,114)	(11,601)	3,523	933	(330)	(13,727)	(7,475)	(9,370)
Interest expense	(227)	(216)	(388)	(410)	(293)	(387)	(333)	(459)	(1,241)	(1,472)	(1,502)
Change in estimated fair value of notes payable and other						(103)	(13,927)	(858)		(14,888)
Other, net	(138)	(173)	(33)	(66)	(313)	(116)	(53)	135	(410)	(347)	(879)
Total other expense, net	(365)	(389)	(421)	(476)	(606)	(606)	(14,313)	(1,182)	(1,651)	(16,707)	(2,381)
Loss before income taxes	(676)	4,582	(5,694)	(13,590)	(12,207)	2,917	(13,380)	(1,512)	(15,378)	(24,182)	(11,751)
Provision for income taxes	354	366	661	301	268	811	311	243	1,682	1,633	1,937
Net loss	(1,030)	4,216	(6,355)	(13,891)	(12,475)	2,106	(13,691)	(1,755)	(17,060)	(25,815)	(13,688)
Net loss attributable to non-controlling interest					(444)	(3,327)	(2,647)	(4,102)		(10,520)	(10,723)
Net loss attributable to the Company	$ (1,030)	$ 4,216	$ (6,355)	$ (13,891)	$ (12,031)	$ 5,433	$ (11,044)	$ 2,347	$ (17,060)	$ (15,295)	$ (2,965)
Net income (loss) per common share, basic	$ (0.02)	$ 0.08	$ (0.11)	$ (0.25)	$ (0.22)	$ 0.10	$ (0.21)	$ 0.04	$ (0.31)	$ (0.29)	$ (0.06)
Net income (loss) per common share, diluted	$ (0.02)	$ 0.07	$ (0.11)	$ (0.25)	$ (0.22)	$ 0.10	$ (0.21)	$ 0.04	$ (0.31)	$ (0.29)	$ (0.06)

Selected Quarterly Consolidat72

Selected Quarterly Consolidated Financial Data (Unaudited) (Selected Quarterly Consolidated Financial Data) (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effect Of Fourth Quarter Events [Line Items]
Stock-based compensation expense			$ 48,297	$ 52,459	$ 34,598
Xpliant, Inc
Effect Of Fourth Quarter Events [Line Items]
Manufacturing rights licensing fee	$ 7,500
Research and development
Effect Of Fourth Quarter Events [Line Items]
Stock-based compensation expense			29,085	32,328	18,577
Research and development | Xpliant, Inc
Effect Of Fourth Quarter Events [Line Items]
Manufacturing rights licensing fee	$ 7,500
Stock-based compensation expense		$ 8,800
Sales, general and administrative
Effect Of Fourth Quarter Events [Line Items]
Stock-based compensation expense			$ 18,447	$ 19,177	$ 15,070
Sales, general and administrative | Xpliant, Inc
Effect Of Fourth Quarter Events [Line Items]
Stock-based compensation expense		$ 1,100

Valuation and Qualifying Acco73

Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 24	$ 24	$ 24
Additions		1	3
Deductions		(1)	(3)
Balance at end of period	24	24	24
Allowance for Customer Returns
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	1,118	909	967
Additions	4,513	3,716	2,752
Deductions	(4,187)	(3,507)	(2,810)
Balance at end of period	1,444	1,118	909
Income Tax Valuation Allowance
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	105,638	79,928	59,736
Additions	21,690	25,710	20,192
Balance at end of period	$ 127,328	$ 105,638	$ 79,928