DTS 10-K 20 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 07, 2014	Jun. 30, 2013
Document and Entity Information	'	'	'
Entity Registrant Name	'DTS, INC.	'	'
Entity Central Index Key	'0001226308	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Public Float	'	'	$186,812,830
Entity Common Stock, Shares Outstanding	'	17,339,198	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$66,025	$57,831
Short-term investments	5,004	14,214
Accounts receivable, net of allowance for doubtful accounts of $1,388 and $679 at December 31, 2013 and 2012, respectively	11,637	9,460
Deferred income taxes	5,787	1,998
Prepaid expenses and other current assets	5,480	4,875
Income taxes receivable	2,826	5,107
Total current assets	96,759	93,485
Property and equipment, net	30,116	33,325
Intangible assets, net	50,225	61,400
Goodwill	48,418	48,418
Deferred income taxes	11,667	605
Long-term investments	'	5,000
Other assets	4,613	4,826
Total assets	241,798	247,059
Current liabilities:	'	'
Accounts payable	2,802	2,796
Accrued expenses	12,142	15,861
Deferred revenue	10,262	7,659
Total current liabilities	25,206	26,316
Long-term debt	30,000	30,000
Other long-term liabilities	3,480	9,817
Commitments and contingencies (Note 10)	'	'
Stockholders' equity:	'	'
Preferred stock-$0.0001 par value, 5,000 shares authorized at December 31, 2013 and 2012; no shares issued and outstanding	'	'
Common stock-$0.0001 par value, 70,000 shares authorized at December 31, 2013 and 2012; 20,972 and 20,710 shares issued at December 31, 2013 and 2012, respectively; 17,279 and 18,208 shares outstanding at December 31, 2013 and 2012, respectively	3	3
Additional paid-in capital	224,971	213,787
Treasury stock, at cost - 3,693 and 2,502 at December 31, 2013 and 2012, respectively	-84,689	-59,848
Accumulated other comprehensive income	747	659
Retained earnings	42,080	26,325
Total stockholders' equity	183,112	180,926
Total liabilities and stockholders' equity	$241,798	$247,059

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Per Share data, unless otherwise specified
CONSOLIDATED BALANCE SHEETS	'	'
Accounts receivable, allowance for doubtful accounts (in dollars)	$1,388	$679
Preferred stock, par value (in dollars per share)	$0.00	$0.00
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	70,000	70,000
Common stock, shares issued	20,972	20,710
Common stock, shares outstanding	17,279	18,208
Treasury stock, shares	3,693	2,502

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS	'	'	'
Revenue	$125,148	$100,649	$96,922
Cost of revenue	9,788	4,347	860
Gross profit	115,360	96,302	96,062
Operating expenses:	'	'	'
Selling, general and administrative	79,753	78,409	52,904
Research and development	31,145	25,774	13,539
Change in fair value of contingent consideration	-6,000	'	'
Impairment of intangible assets	2,820	'	'
Total operating expenses	107,718	104,183	66,443
Operating income (loss)	7,642	-7,881	29,619
Interest and other income (expense), net	-521	-352	311
Income (loss) before income taxes	7,121	-8,233	29,930
Provision (benefit) for income taxes	-8,634	7,665	11,661
Net income (loss)	$15,755	($15,898)	$18,269
Net income (loss) per common share:	'	'	'
Basic (in dollars per share)	$0.87	($0.91)	$1.08
Diluted (in dollars per share)	$0.86	($0.91)	$1.04
Weighted average shares outstanding:	'	'	'
Basic (in shares)	18,097	17,466	16,982
Diluted (in shares)	18,334	17,466	17,575

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)	'	'	'
Net income (loss)	$15,755	($15,898)	$18,269
Other comprehensive income (loss), net of tax:	'	'	'
Foreign currency translation adjustments, net	94	56	155
Other, net	-6	-41	-2
Total comprehensive income (loss)	$15,843	($15,883)	$18,422

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income	Retained Earnings
In Thousands, unless otherwise specified
Balance at Dec. 31, 2010	$147,568	$3	$180,708	($74,923)	$491	$41,289
Balance (in shares) at Dec. 31, 2010	'	17,325	'	'	'	'
Increase (decrease) in shareholders' equity	'	'	'	'	'	'
Exercise of options and related tax benefit (shortfall) of ($2,090), $8,661 and $314 for the year ended 2013, 2012 and 2011, respectively	3,096	'	3,096	'	'	'
Exercise of options and related tax benefit (shortfall) of ($2,090), $8,661 and $314 for the year ended 2013, 2012 and 2011, respectively (in shares)	'	161	'	'	'	'
Issuance of common stock under employee stock purchase plan	1,317	'	1,317	'	'	'
Issuance of common stock under employee stock purchase plan (in shares)	'	46	'	'	'	'
Restricted stock award grants, net of forfeitures and shares withheld for taxes	-1,585	'	-1,585	'	'	'
Restricted stock award grants, net of forfeitures and shares withheld for taxes (in shares)	'	-29	'	'	'	'
Restricted stock unit vesting (in shares)	'	33	'	'	'	'
Stock-based compensation charge	9,283	'	9,283	'	'	'
Stock repurchases	-32,299	'	'	-32,299	'	'
Stock repurchases (in shares)	'	-1,000	'	'	'	'
Comprehensive income (loss):	'	'	'	'	'	'
Net income (loss)	18,269	'	'	'	'	18,269
Other comprehensive income	153	'	'	'	153	'
Total comprehensive income (loss)	18,422	'	'	'	'	'
Balance at Dec. 31, 2011	145,802	3	192,819	-107,222	644	59,558
Balance (in shares) at Dec. 31, 2011	'	16,536	'	'	'	'
Increase (decrease) in shareholders' equity	'	'	'	'	'	'
Exercise of options and related tax benefit (shortfall) of ($2,090), $8,661 and $314 for the year ended 2013, 2012 and 2011, respectively	9,432	'	9,432	'	'	'
Exercise of options and related tax benefit (shortfall) of ($2,090), $8,661 and $314 for the year ended 2013, 2012 and 2011, respectively (in shares)	'	78	'	'	'	'
Issuance of common stock under employee stock purchase plan	1,205	'	1,205	'	'	'
Issuance of common stock under employee stock purchase plan (in shares)	'	70	'	'	'	'
Restricted stock award grants, net of forfeitures and shares withheld for taxes	-985	'	-985	'	'	'
Restricted stock award grants, net of forfeitures and shares withheld for taxes (in shares)	'	-22	'	'	'	'
Restricted stock unit vesting (in shares)	'	48	'	'	'	'
Stock-based compensation charge	11,316	'	11,316	'	'	'
Stock issued as consideration for business acquisition	44,571	'	'	61,906	'	-17,335
Stock issued as consideration for business acquisition (in shares)	'	2,307	'	'	'	'
Stock repurchases	-14,532	'	'	-14,532	'	'
Stock repurchases (in shares)	'	-809	'	'	'	'
Comprehensive income (loss):	'	'	'	'	'	'
Net income (loss)	-15,898	'	'	'	'	-15,898
Other comprehensive income	15	'	'	'	15	'
Total comprehensive income (loss)	-15,883	'	'	'	'	'
Balance at Dec. 31, 2012	180,926	3	213,787	-59,848	659	26,325
Balance (in shares) at Dec. 31, 2012	18,208	18,208	'	'	'	'
Increase (decrease) in shareholders' equity	'	'	'	'	'	'
Exercise of options and related tax benefit (shortfall) of ($2,090), $8,661 and $314 for the year ended 2013, 2012 and 2011, respectively	-1,673	'	-1,673	'	'	'
Exercise of options and related tax benefit (shortfall) of ($2,090), $8,661 and $314 for the year ended 2013, 2012 and 2011, respectively (in shares)	'	27	'	'	'	'
Issuance of common stock under employee stock purchase plan	2,059	'	2,059	'	'	'
Issuance of common stock under employee stock purchase plan (in shares)	'	161	'	'	'	'
Restricted stock award grants, net of forfeitures and shares withheld for taxes	-929	'	-929	'	'	'
Restricted stock award grants, net of forfeitures and shares withheld for taxes (in shares)	'	-8	'	'	'	'
Restricted stock unit vesting (in shares)	'	82	'	'	'	'
Stock-based compensation charge	11,727	'	11,727	'	'	'
Stock repurchases	-24,841	'	'	-24,841	'	'
Stock repurchases (in shares)	'	-1,191	'	'	'	'
Comprehensive income (loss):	'	'	'	'	'	'
Net income (loss)	15,755	'	'	'	'	15,755
Other comprehensive income	88	'	'	'	88	'
Total comprehensive income (loss)	15,843	'	'	'	'	'
Balance at Dec. 31, 2013	$183,112	$3	$224,971	($84,689)	$747	$42,080
Balance (in shares) at Dec. 31, 2013	17,279	17,279	'	'	'	'

CONSOLIDATED_STATEMENTS_OF_STO1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY	'	'	'
Exercise of options, tax benefit	'	$8,661	$314
Exercise of options, tax shortfall	$2,090	'	'

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income (loss)	$15,755	($15,898)	$18,269
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'	'
Depreciation and amortization	15,399	9,625	5,337
Stock-based compensation charges	11,727	11,316	9,283
Deferred income taxes	-14,849	5,392	2,873
Tax benefits (shortfalls) from stock-based awards	-2,090	8,661	314
Excess tax benefits from stock-based awards	-67	-8,879	-275
Change in fair value of contingent consideration	-6,000	'	'
Impairment of intangible assets	2,820	'	'
Other	858	822	454
Changes in operating assets and liabilities, net of business acquisitions:	'	'	'
Accounts receivable	-2,474	5,316	649
Prepaid expenses and other assets	-980	-2,381	-1,044
Accounts payable, accrued expenses and other liabilities	-3,568	-2,899	-5,600
Deferred revenue	2,603	6,032	-5,537
Income taxes receivable	2,281	-2,316	-492
Net cash provided by operating activities	21,415	14,791	24,231
Cash flows from investing activities:	'	'	'
Purchases of held-to-maturity investments	'	-3,450	-40,660
Purchases of available-for-sale investments	-4,974	-46,890	-23,529
Maturities of held-to-maturity investments	'	20,120	74,470
Maturities of available-for-sale investments	19,184	31,534	3,800
Sales of held-to-maturity investments	'	9,109	'
Sales of available-for-sale investments	'	24,760	'
Cash paid for business acquisitions, net	'	-59,616	'
Purchases of property and equipment	-2,766	-4,225	-3,057
Purchases of intangible assets	-938	-584	-545
Net cash provided by (used in) investing activities	10,506	-29,242	10,479
Cash flows from financing activities:	'	'	'
Payment of contingent consideration	-500	'	'
Proceeds from the issuance of common stock under stock-based compensation plans	2,476	1,976	4,099
Purchases of common stock for restricted stock withholdings	-929	-985	-1,585
Excess tax benefits from stock-based awards	67	8,879	275
Proceeds from long-term borrowings	'	30,000	'
Purchases of treasury stock	-24,841	-14,532	-32,299
Net cash provided by (used in) financing activities	-23,727	25,338	-29,510
Net change in cash and cash equivalents	8,194	10,887	5,200
Cash and cash equivalents, beginning of the year	57,831	46,944	41,744
Cash and cash equivalents, end of the year	66,025	57,831	46,944
Supplemental disclosure of cash flow information:	'	'	'
Cash paid for interest	363	168	'
Cash paid for income taxes	1,942	2,091	3,433
Significant non-cash transactions:	'	'	'
Contingent consideration for business acquisition	'	7,500	'
Common stock issued as consideration for business acquisition	'	$44,571	'

The_Company

The Company	12 Months Ended
	Dec. 31, 2013
The Company	'
The Company	'
	Note 1—The Company
	DTS, Inc. (the "Company") is a leading provider of premier audio solutions that are incorporated into an array of consumer electronics devices by hundreds of licensee customers around the world. The Company's audio technologies enable recording, delivery and playback of simple, personalized, and immersive high-definition audio and are currently used in a variety of product applications, including televisions ("TVs"), personal computers ("PCs"), smartphones, tablets, digital media players, video game consoles, Blu-ray Disc players, audio/video receivers, soundbars, DVD based products, automotive audio systems, set-top-boxes, and home theater systems. In addition, the Company provides products and services to motion picture studios, radio and TV broadcasters, game developers and other content creators to facilitate the inclusion of compelling, realistic DTS-encoded soundtracks in their content. The Company also provides a suite of audio processing technologies designed to enhance the entertainment experience for users of consumer electronics products subject to physical limitations, such as TVs, PCs and mobile electronics.
	The Company commenced operations in 1990 as Digital Theater Systems Corporation ("DTS Corp"). In 1993, DTS Corp became the general partner of Digital Theater Systems, L.P., a Delaware limited partnership ("the Partnership"). In 1994, the Partnership formed DTS Technology, LLC ("DTS Technology") to develop audio technologies for the consumer electronics and other markets. In 1997, the Company completed a reorganization and tax-free exchange with the predecessor entities and was incorporated in Delaware. In 2003, the Company completed its initial public offering for the sale of 4,091 shares of common stock at a price to the public of $17.00 per share. In May 2005, the Company changed its name from Digital Theater Systems, Inc. to DTS, Inc.
	Acquisitions of SRS Labs, Inc. and Phorus' Assets
	On July 20, 2012, the Company completed its acquisition of SRS Labs, Inc. ("SRS"), pursuant to the Agreement and Plan of Merger and Reorganization, dated as of April 16, 2012 (the "Merger Agreement"), by and among the Company, DTS Merger Sub, Inc., a wholly owned subsidiary of the Company ("Merger Sub"), DTS LLC, a single member limited liability company and a wholly owned subsidiary of the Company ("DTS LLC"), and SRS. Pursuant to the Merger Agreement, Merger Sub was merged with and into SRS, with SRS surviving the merger as a wholly owned subsidiary of the Company (the "Merger"). Immediately following the Merger, SRS was merged with and into DTS LLC, with DTS LLC continuing as the surviving entity and a wholly owned subsidiary of the Company. During 2013, the Company finalized the purchase price accounting related to SRS, and retrospectively applied measurement period adjustments to the consolidated financial statements.
	On July 5, 2012, the Company completed its acquisition of assets from Phorus, Inc. and Phorus, LLC (collectively "Phorus") pursuant to an Asset Purchase Agreement dated the same day (the "Asset Purchase Agreement"). During 2013, the Company finalized the purchase price accounting related to Phorus.
	For additional information, refer to Notes 2, 4 and 6, "Significant Accounting Policies", "Fair Value Measurements" and "Business Combinations", respectively.

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Significant Accounting Policies	'
Significant Accounting Policies	'
	Note 2—Significant Accounting Policies
	Principles of Consolidation
	The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") and pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). The consolidated financial statements include the accounts of the Company and its subsidiaries. The financial results for 2012 include SRS and Phorus from the dates of their respective acquisition. All material intercompany accounts and transactions have been eliminated.
	Use of Estimates
	The preparation of financial statements in accordance with U.S. GAAP and pursuant to the rules and regulations of the SEC requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to revenue recognition, allowance for doubtful accounts, valuation of goodwill, other intangible assets, and long-lived assets, fair value of contingent consideration, stock-based compensation, income taxes and business combinations. The Company bases its estimates on historical and anticipated results, trends and on various other assumptions that it believes are reasonable under the circumstances, including assumptions as to future events. These estimates form the basis for making assumptions about the carrying values of assets and liabilities that are not readily apparent from other sources. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results could differ materially from those estimates.
	Reclassifications
	Certain prior period amounts have been reclassified to conform to current year presentation.
	Cash Equivalents
	The Company considers all short-term highly liquid investments with an original maturity of three months or less to be cash equivalents. Cash equivalents primarily consist of funds held in money market accounts. Cash equivalents are stated at cost plus accrued interest, which approximates fair value.
	Investments
	The Company considers, at the time that they are purchased, investments with maturities greater than three months, but less than one year, to be short-term investments. Investments that have maturities of more than one year are classified as long-term investments. Investments are classified as available-for-sale and are reported at fair value with unrealized gains or losses, if any, reported, net of tax, in accumulated other comprehensive income. The cost of investments sold is based on the specific identification method, and all income generated and realized gains or losses from investments are recorded to interest and other income (expense), net.
	The Company reviews its investments to identify and evaluate investments that have an indication of possible impairment. Factors considered in determining whether a loss is temporary include the length of time and extent to which fair value has been less than the cost basis, the financial condition and near-term prospects of the investee, and the Company's intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value. Credit losses and other-than-temporary impairments are declines in fair value that are not expected to recover and are charged to interest and other income (expense), net.
	Concentration of Business and Credit Risk
	The Company markets its products and services to consumer electronics products manufacturers in the U.S. and internationally. Although the Company is generally subject to the financial well-being of the consumer electronics industry, management does not believe that the Company is subject to significant credit risk with respect to trade accounts receivable. Additionally, the Company performs ongoing credit evaluations of its customers and maintains allowances for potential credit losses which, when realized, have generally been within the range of management's expectations.
	Three customers accounted for 21%, 12% and 12%, respectively, of revenues for the year ended December 31, 2013. The revenue from one of the customers accounting for 12% of revenues for the year ended December 31, 2013 exceeded 10% of revenues due to royalty recoveries. Two customers accounted for 13% and 11%, respectively, of revenues for the year ended December 31, 2012. Two customers accounted for 16% and 12%, respectively, of revenues for the year ended December 31, 2011.
	One customer accounted for 51% of accounts receivable at December 31, 2013, that resulted largely from royalty recoveries. One customer accounted for 10% of accounts receivable at December 31, 2012, that resulted from royalty recoveries.
	The Company deposits its cash and cash equivalents in accounts with major financial institutions worldwide. At times, such deposits may be in excess of insured limits. The Company's investment accounts are with major financial institutions and include investment grade municipal securities and U.S. agency securities. The Company has not incurred any significant credit losses on its investments.
	Allowance For Doubtful Accounts
	The Company continually monitors customer payments and maintains a reserve for estimated losses resulting from its customers' inability to make required payments. In determining the reserve, the Company evaluates the collectibility of its accounts receivable based upon a variety of factors. In cases where the Company becomes aware of circumstances that may impair a specific customer's ability to meet its financial obligations, the Company records a specific allowance against amounts due. For all other customers, the Company recognizes allowances for doubtful accounts based on its historical write-off experience in conjunction with the length of time the receivables are past due, customer creditworthiness, geographic risk and the current business environment. Actual future losses from uncollectible accounts may differ from the Company's estimates.
	Property and Equipment
	Property and equipment are recorded at cost, less accumulated depreciation. Depreciation is calculated using the straight-line method over the related assets' estimated useful lives, as follows:
	Machinery and equipment	2 to 5 years
	Software	2 to 7 years
	Office furniture and fixtures	3 to 7 years
	Leasehold improvements	Lesser of useful life or related lease term
	Building and improvements	Up to 35 years
	Expenditures that materially increase asset life are capitalized, while ordinary maintenance and repairs are expensed as incurred.
	Capitalized Software Costs
	The Company capitalizes the costs of purchased software licenses, consulting costs and payroll-related costs incurred in developing or implementing internal use computer software. These costs are included in property and equipment, net on the consolidated balance sheets. Costs incurred during the preliminary project and post-implementation stages are charged to expense as incurred. The Company's capitalized software costs are amortized on a straight-line basis over the estimated useful life of the software upon being placed in service, two to seven years.
	Long-Lived Assets
	The Company periodically assesses potential impairments to its long-lived assets by performing an impairment review whenever events or changes in circumstances indicate that the carrying value may not be fully recoverable. Factors considered by the Company include, but are not limited to: significant underperformance relative to expected historical or projected future operating results; significant changes in the manner of use of the acquired assets or the strategy for the Company's overall business; and significant negative industry or economic trends. When the Company determines that the carrying value of a long-lived asset may not be recoverable based upon the existence of one or more of the above indicators of impairment, the Company estimates the future undiscounted cash flows expected to result from the use of the asset and its eventual disposition. If the sum of the expected future undiscounted cash flows and eventual disposition is less than the carrying amount of the asset, the Company recognizes an impairment charge. An impairment charge is reflected as the amount by which the carrying amount exceeds the fair market value of the asset, based on the fair market value if available, or discounted cash flows. To date, there has been no impairment of long-lived tangible assets.
	Goodwill and Other Intangible Assets
	The Company operates in one reportable and operating segment, but evaluates goodwill for impairment at the reporting unit level. Reporting units are identified based on the current organizational structure, availability of discrete financial information, and economic similarity of components under the Company's operating segment. During the annual strategic planning process in the third quarter of 2013, the Company changed the business model relating to Phorus resulting in the identification of the Phorus business as a separate reporting unit from the rest of the Company for the purpose of testing goodwill for impairment. Goodwill was reassigned to each reporting unit using the relative fair value approach. The Company evaluates the carrying value of goodwill and indefinite-lived intangibles for impairment on an annual basis as of October 31 of each year, or more frequently if events or circumstances indicate that the goodwill and other intangibles might be impaired.
	Impairment of indefinite-lived intangibles is tested by estimating the fair value of the assets, and an impairment charge would be recorded to the extent that the carrying amount of such assets exceeds the estimated fair value. Evaluation of the recoverability of goodwill includes valuation of the underlying reporting unit using fair value techniques, which may include both income and market approaches. If the carrying value of the reporting unit exceeds its estimated fair value, or if the reporting unit has a negative carrying value and the Company believes it is more likely than not that a goodwill impairment exists, the Company would proceed to estimate the fair value of the goodwill itself and compare it to the carrying value to test for impairment and quantify an impairment charge, if any. The Company would record an impairment charge in an amount equal to the excess of the carrying value of the goodwill over the estimated fair value. Goodwill impairment is measured subsequent to the completion of any impairment of all other intangible and long-lived assets associated with the reporting unit.
	The Company's definite-lived intangibles principally consist of customer relationships, acquired technology and developed patents and tradenames, which are being amortized over their respective estimated useful lives. The Company reviews such assets for impairment whenever events or changes in circumstances indicate an asset's carrying value may not be recoverable. Factors considered include, but are not limited to, significant underperformance relative to expected historical or projected future operating results; significant changes in the manner of use of the acquired assets or projected future operating results; significant changes in the strategy of the overall business; and significant negative industry or economic trends. Recoverability of an intangible is measured by comparing its carrying amount to the expected future undiscounted cash flows that the asset is expected to generate. If it is determined that an asset is not recoverable, an impairment charge is recorded in the amount by which the carrying amount of the asset exceeds its fair value.
	If the Company is unable to finalize the results of impairment tests prior to the issuance of the financial statements and an impairment charge is probable and can be reasonably estimated, the Company recognizes its best estimate of the loss in the current period financial statements and discloses that the amount is an estimate. The Company would then recognize any adjustments to that estimate in subsequent reporting periods, once the results of the impairment tests have been finalized.
	Costs incurred in securing patents and trademarks and protecting the Company's proprietary technology and brand name are capitalized. Patent and trademark costs are amortized over their estimated useful lives, typically five and ten years, respectively. The amortization period commences when the patent or trademark is issued.
	For additional information refer to Note 7, "Goodwill and Other Intangibles".
	Business Combinations
	The Company includes the results of operations of the businesses that it has acquired in its consolidated results as of the respective dates of acquisition. However, as noted below in the revenue recognition policy, the Company did not begin to recognize revenue from per-unit licensing agreements acquired with SRS until the fourth quarter of 2012.
	The Company allocates the fair value of the purchase consideration of its acquisitions to the tangible assets, liabilities and intangible assets acquired, including in-process research and development ("IPR&D"), based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. The primary items that generate goodwill include the value of the synergies between the acquired companies and the Company and the acquired assembled workforce, neither of which qualifies as an identifiable intangible asset. IPR&D is initially capitalized at fair value as an intangible asset with an indefinite life and assessed for impairment thereafter. When the IPR&D project is complete, it is reclassified as an amortizable purchased intangible asset and is amortized over its estimated useful life. If an IPR&D project is abandoned, the Company records a charge for the value of the related intangible asset in its consolidated statement of operations in the period it is abandoned. The fair value of contingent consideration associated with acquisitions is remeasured each reporting period and adjusted accordingly. Acquisition and integration related costs are recognized separately from the business combination and are expensed as incurred.
	Revenue Recognition
	The Company recognizes revenue when persuasive evidence of a sales arrangement exists, delivery has occurred or services have been rendered, the buyer's price is fixed or determinable and collection is reasonably assured. Revenues from arrangements involving license fees, up-front payments and milestone payments, which are received or billable by the Company in connection with other rights and services that represent continuing obligations of the Company, are deferred until all of the elements have been delivered or until the Company has established objective and verifiable evidence of the fair value of the undelivered elements.
	Revenue from licensing audio technology, trademarks and know-how is generated from licensing agreements with consumer electronics products manufacturers that pay a per-unit license fee for products manufactured or shipped, as set forth in those license agreements. Licensees generally report manufacturing or shipping information within 30 to 60 days after the end of the quarter in which such activity takes place. Consequently, the Company recognizes revenue from these licensing agreements on a three-month lag basis, generally in the quarter following the quarter of manufacture or shipment, provided amounts are fixed or determinable and collection is reasonably assured, since the Company cannot reliably estimate the amount of revenue earned prior to the receipt of such reports. Use of this lag method allows for the receipt of licensee royalty reports prior to the recognition of revenue.
	Certain cash collections from per-unit licensing agreements acquired with SRS during the year ended December 31, 2012 were the result of product shipments prior to July 20, 2012, the acquisition date. Therefore, the Company did not recognize revenue from these per-unit licensing agreements and certain other licensing arrangements acquired with SRS during the year ended December 31, 2012. Accordingly, the Company recognized revenue from per-unit licensing agreements acquired with SRS that resulted from product shipments after the acquisition date.
	For certain licensing agreements, licensees pay a flat fee for the right to license certain technology over the contract term. Typically, the agreement stipulates a flat fee that corresponds to a minimum number of units or dollars, with additional per-unit fees for any units or dollars exceeding the minimum. For these agreements, the Company has continuing obligations relating to other rights and services provided over the term of the contract. As such, the Company recognizes the minimum or flat fee amount on these agreements as revenue ratably over the duration of contract term as all contractual obligations are met. Consistent with the aforementioned policy for per-unit license fee agreements, the Company recognizes revenue relating to any additional per-unit fees on a quarter lag basis, since the Company cannot reliably estimate the amount of revenue earned from additional units manufactured or shipped prior to the receipt of licensee reports.
	The Company actively polices and enforces its intellectual property, and pursues third parties who utilize its intellectual property without a license or who have under-reported the amount of royalties owed under a license agreement with it. As a result of these activities, from time to time, the Company may recognize royalty revenues that relate to infringements that occurred in prior periods. These royalty recoveries may cause revenues to be higher than expected during a particular reporting period and may not occur in subsequent periods. Differences between amounts initially recognized and amounts subsequently audited or reported as an adjustment to those amounts due from licensees, will be recognized in the period such adjustment is determined or contracted, as appropriate.
	Deferred revenues arise primarily from payments for licensing audio technology received in advance of the culmination of the earnings process. Deferred revenues will be recognized as revenue in future periods when the applicable revenue recognition criteria are met. Typically, deferred revenues arise from flat fee arrangements that allow licensees to manufacture an unlimited number of units over a specified term, and accordingly, these deferred revenues will be recognized as revenue ratably over the term of the arrangement.
	Licensing revenue is recognized gross of withholding taxes that are remitted by the Company's licensees directly to their local tax authorities. For the years ended December 31, 2013, 2012 and 2011, withholding taxes were $5,610, $4,970, and $5,537, respectively.
	Research and Development ("R&D") Costs
	The Company conducts its R&D internally and expenses are primarily comprised of the following types of costs incurred in performing research and development activities: salaries and benefits, related employee expenses, allocated overhead, contract services, and consultants. R&D costs are expensed as incurred.
	Foreign Currency Translation
	The functional currency of one of the Company's wholly-owned subsidiaries is the currency of the primary economic environment in which it operates. The assets and liabilities of this wholly-owned subsidiary are translated at the prevailing rate of exchange at the balance sheet date, while the results of operations are translated at the average exchange rate in effect for the period. The translation adjustments resulting from translating the functional currency into U.S. dollars have been deferred as a component of accumulated other comprehensive income in stockholders' equity.
	The functional currency of the Company's other wholly-owned subsidiaries is the U.S. dollar and accordingly, nonmonetary balance sheet accounts are remeasured with the appropriate historical rates. All other balance sheet accounts are translated at the prevailing rate of exchange at the balance sheet date, while the results of operations are translated at the average exchange rate in effect for the period. The gains and losses resulting from this remeasurement and translation are reflected in the determination of net income (loss).
	To date, annual foreign currency translation adjustments, gains and losses have not been significant.
	Comprehensive Income (Loss)
	Comprehensive income (loss) includes all changes in stockholders' equity during a period from non-owner sources. To date, accumulated other comprehensive income is comprised mostly of foreign currency translation.
	Advertising Expenses
	Advertising and promotional costs are expensed as incurred and amounted to $4,408, $3,584, and $2,957 for the years ended December 31, 2013, 2012 and 2011, respectively.
	Treasury Stock
	Repurchased shares of the Company's common stock are held as treasury shares until they are reissued or retired. When the Company reissues treasury stock, and the proceeds from the sale exceed the average price that was paid by the Company to acquire the shares, the Company records such excess as an increase in additional paid-in capital. Conversely, if the proceeds from the sale are less than the average price the Company paid to acquire the shares, the Company records such difference as a decrease in additional paid-in capital to the extent of increases previously recorded, with the balance recorded as a decrease in retained earnings.
	Restricted Stock Withholdings
	The Company issues restricted stock units as part of its equity incentive plans. For a majority of the restricted stock granted, the number of shares released on the date the restricted stock vests is net of the statutory withholding requirements that the Company pays to the appropriate taxing authorities on behalf of its employees. The shares repurchased to satisfy the statutory withholding requirements are immediately and effectively retired.
Income Taxes
The Company utilizes the asset and liability method of accounting for income taxes. Under this method, the deferred tax assets and liabilities are measured each year based on the difference between the financial statement and tax basis of assets and liabilities at the applicable enacted tax rates. The deferred tax provision is the result of changes in the deferred tax assets and liabilities. The Company recognizes interest and penalties related to income taxes in the provision for income taxes. Additionally, a valuation allowance is recorded for that portion of deferred tax assets for which it is more likely than not that the assets will not be realized. In assessing the need for a valuation allowance, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial performance. The Company believes it is more likely than not that its forecasted income, including income generated as a result of a tax planning strategy transacted on January 1, 2014, will be sufficient to realize the deferred tax assets. In the event that all or part of the deferred tax assets are determined not to be realizable in the future, an adjustment to the valuation allowance may be necessary. A valuation allowance adjustment would be recorded in the provision for income taxes in the period such determination is made.
Fair Value of Financial Instruments
The carrying amount of cash equivalents, short-term investments, accounts receivable, accounts payable and accrued liabilities approximates fair value due to the short-term nature of these instruments. Long-term debt approximates fair value due to the variable rate nature of the debt.
Recent Accounting Pronouncement
In July 2013, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2013-11, "Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists." This standard provides guidance regarding when an unrecognized tax benefit should be classified as a reduction to a deferred tax asset or when it should be classified as a liability in the consolidated balance sheet. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption and retrospective application is permitted. The Company is evaluating the potential impact of this adoption on its consolidated financial statements.

Cash_Cash_Equivalents_and_Inve

Cash, Cash Equivalents and Investments	12 Months Ended
	Dec. 31, 2013
Cash, Cash Equivalents and Investments	'
Cash, Cash Equivalents and Investments	'
	Note 3—Cash, Cash Equivalents and Investments
	Cash, cash equivalents and investments consist of the following:
		As of December 31,
		2013		2012
	Cash and cash equivalents:
	Cash	$	26,374	$	17,433
	Money market accounts		39,651		40,398
	Total cash and cash equivalents	$	66,025	$	57,831
	Short-term investments:
	Certificates of deposit	$	—	$	4,189
	U.S. government and agency securities		5,004		10,025
	Total short-term investments	$	5,004	$	14,214
	Long-term investments:
	U.S. government and agency securities	$	—	$	5,000
	Total long-term investments	$	—	$	5,000
	The Company had no material gross realized or unrealized holding gains or losses from its investments for the years ended December 31, 2013, 2012 and 2011. The contractual maturities of investments at December 31, 2013 were all due within one year. For additional information on investments, refer to Note 4, "Fair Value Measurements".

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Fair Value Measurements	'
	Note 4—Fair Value Measurements
	The Company's investments are required to be measured and recorded at fair value on a recurring basis. The Company's contingent consideration related to its acquisition of assets from Phorus is also measured and recorded at fair value on a recurring basis until it can be determined whether or not any future payments will be made. Increases or decreases in the fair value of contingent consideration can result from accretion of the liability due to the passage of time, changes in the timing and amount of revenue estimates, changes in discount rates, or remittance of payments.
	The Company obtained the fair value of its available-for-sale securities, which are not in active markets, from a third-party professional pricing service using quoted market prices for identical or comparable instruments, rather than direct observations of quoted prices in active markets. The Company's professional pricing service gathers observable inputs for all of its fixed income securities from a variety of industry data providers (e.g., large custodial institutions) and other third-party sources. Once the observable inputs are gathered, all data points are considered and the fair value is determined. The Company validates the quoted market prices provided by its primary pricing service by comparing their assessment of the fair values against the fair values provided by its investment managers. The Company's investment managers use similar techniques to its professional pricing service to derive pricing as described above. As all significant inputs were observable, derived from observable information in the marketplace or supported by observable levels at which transactions are executed in the marketplace, the Company has classified its available-for-sale securities within Level 2 of the fair value hierarchy.
	The initial fair value of contingent consideration was determined at the date of acquisition, and it was subject to the achievement of certain revenue milestones over a three and a half year period from the date of the Phorus asset acquisition. The Company used the income approach, which included an analysis of the cash flows and risks associated with achieving such cash flows, to value the contingent consideration based on two scenarios. One scenario was a risk neutral analysis and utilized a discount rate of 4%. The second scenario utilized was not a risk neutral analysis and utilized a discount rate of 13%. At December 31, 2012, there were no material changes to the fair value of contingent consideration or assumptions used since the date of acquisition. In the third quarter of 2013, the Company recorded a gain of $5,300 in the consolidated statement of operations resulting from a decrease in the estimated fair value of the contingent consideration.
	In October 2013, the Asset Purchase Agreement was amended to reduce the total potential contingent consideration to $2,000, and the revenue milestones were reduced to reflect changes made by the Company in the Phorus business model. Under the amendment, contingent consideration of $500 could be due and payable at the end of 2013 and 2014, and $1,000 could be due and payable at the end of 2015. In the fourth quarter of 2013, the first milestone was achieved and consideration of $500 was paid. As of December 31, 2013, the Company measured the fair value of the remaining contingent consideration based on the amended terms. The Company used an income approach, based on an updated analysis of cash flows in a non-risk neutral scenario, which utilized a discount rate of 17%. As a result of the amended terms and the other assumptions noted, the Company adjusted the fair value of the contingent consideration to $1,000 as of December 31, 2013, and recognized a gain of $700 in the consolidated statement of operations in the fourth quarter of 2013, resulting in a total gain of $6,000 for the year ended December 31, 2013. Considerable judgment is required in the assumptions used in fair value measurements. Accordingly, use of different assumptions, such as significant increases or decreases in estimated revenues, cash flows or the discount rate, could result in materially different fair value estimates.
	For additional information on contingent consideration, refer to Notes 6 and 10, "Business Combinations" and "Commitments and Contingencies", respectively.
	The Company's financial assets and liabilities, measured at fair value on a recurring basis, were as follows:
					Fair Value Measurements at Reporting
					Date Using
	Assets (Liabilities)	Total			Quoted		Significant		Significant
					Prices in		Other		Unobservable
					Active		Observable		Inputs
					Markets for		Inputs		(Level 3)
					Identical		(Level 2)
					Assets
					(Level 1)
	As of December 31, 2013
	U.S. government and agency securities	$	5,004		$	—	$	5,004	$	—
	Contingent consideration(1)	$	(1,000	)	$	—	$	—	$	(1,000	)
	As of December 31, 2012
	Certificates of deposit	$	4,189		$	—	$	4,189	$	—
	U.S. government and agency securities	$	15,025		$	—	$	15,025	$	—
	Contingent consideration(2)	$	(7,500	)	$	—	$	—	$	(7,500	)
	-1
	As of December 31, 2013, $400 and $600 were classified in accrued expenses and other long-term liabilities, respectively, on the consolidated balance sheet.
	-2
	As of December 31, 2012, $2,200 and $5,300 were classified in accrued expenses and other long-term liabilities, respectively, on the consolidated balance sheet.
	The following table summarizes the changes in the fair value of assets (liabilities) categorized as Level 3:
	Balance at December 31, 2012	$	(7,500	)
	Payment of contingent consideration		500
	Change in fair value of contingent consideration(1)		6,000
	Balance at December 31, 2013	$	(1,000	)
	-1
	This change is reflected within operating expenses in the consolidated statement of operations.

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2013
Property and Equipment	'
Property and Equipment	'
	Note 5—Property and Equipment
	Property and equipment consist of the following:
		As of December 31,
		2013			2012
	Land	$	6,600		$	6,600
	Building and improvements		21,433			21,342
	Machinery and equipment		5,264			4,629
	Office furniture and fixtures		7,560			6,824
	Leasehold improvements		4,409			4,030
	Software		6,738			6,568
			52,004			49,993
	Less: Accumulated depreciation		(21,888	)		(16,668	)
	Property and equipment, net	$	30,116		$	33,325
	Depreciation expense was $5,550, $4,833, and $3,965 for the years ended December 31, 2013, 2012 and 2011, respectively.

Business_Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2013
Business Combinations	'
Business Combinations	'
	Note 6—Business Combinations
	Acquisition of SRS
	On July 20, 2012, the Company completed its acquisition of SRS, which was accounted for using the acquisition method of accounting. Aggregate consideration for this Merger was valued at $124,785. The preliminary allocation of the purchase price was prepared by the Company, based in part on preliminary estimates and valuations of independent consultants. The Company completed the final allocation of the purchase price related to SRS in 2013.
	During the year ended December 31, 2013, the Company recognized adjustments to the fair value of certain assets acquired and liabilities assumed. The effect of these adjustments on the preliminary purchase price allocation was an increase in accounts receivable of $2,550, an increase in prepaid expenses and other current assets of $303, a decrease in goodwill of $2,896, a decrease in deferred tax assets of $25, an increase in accounts payable of $25, and a decrease in accrued expenses of $93. The measurement period adjustments were retrospectively applied to the consolidated financial statements. The following table presents the final purchase price allocation, as adjusted:
		Weighted				Estimated
		Average				Fair Value
		Estimated
		Useful
		Life (years)
	Cash and cash equivalents						23,298
	Short-term investments						8,529
	Accounts receivable						9,835
	Prepaid expenses and other current assets						1,628
	Income taxes receivable						200
	Property and equipment						1,027
	Goodwill						41,708
	Identifiable intangible assets:
	Customer relationships		8		44,540
	Developed technology		6		7,920
	Trademarks/tradenames		5		2,810
	IPR&D				1,180
	Total identifiable intangible assets						56,450
	Deferred tax assets						5,882
	Long-term investments						249
	Accounts payable						(476	)
	Accrued expenses						(2,279	)
	Deferred revenue						(506	)
	Deferred tax liabilities						(19,978	)
	Other long-term liabilities						(782	)
	Total purchase price					$	124,785
	During 2013, licensing agreements acquired with SRS have begun to be integrated with the Company's agreements, and as a result, total revenue from licensing agreements acquired with SRS is no longer identifiable. Acquisition and integration related costs for this acquisition included severance costs, change in control costs, banker fees, legal fees, other professional fees, contract termination costs and other administrative costs. The acquisition and integration related costs for the SRS acquisition that have been included in the Company's consolidated statements of operations were as follows:
		For the Years Ended
		December 31,
		2013		2012
	Selling, general and administrative	$	1,520	$	13,276
	Research and development		38		2,234
	Total acquisition and integration related costs	$	1,558	$	15,510
	Acquisition of Phorus' Assets
	On July 5, 2012, the Company acquired substantially all of the assets of Phorus. This Asset Purchase was accounted for using the acquisition method of accounting. The preliminary allocation of the purchase price was prepared by the Company, based in part on preliminary estimates and valuations of independent consultants. The final allocation of the purchase price was completed in 2013, resulting in no adjustments.
	The Company paid initial cash consideration of $3,000, including a $300 holdback for potential indemnification matters, upon the closing of the acquisition, and it would have been required to pay up to an additional $10,000 in consideration subject to the achievement of certain revenue milestones. In October 2013, the Asset Purchase Agreement was amended to reduce the total potential contingent consideration to $2,000, and the revenue milestones were reduced to reflect changes made by the Company in the Phorus business model. For additional information on contingent consideration, refer to Note 4, "Fair Value Measurements".
	Acquisition and integration related costs for this acquisition totaled $8 and $193 for the year ended December 31, 2013 and 2012, respectively, and were included in the Company's consolidated statement of operations within selling, general and administrative expenses. These costs included legal fees, other professional fees and other administrative costs.

Goodwill_and_Other_Intangibles

Goodwill and Other Intangibles	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Intangibles	'
Goodwill and Other Intangibles	'
	Note 7—Goodwill and Other Intangibles
	Due to revised forecasts developed during our annual strategic planning process in the third quarter of 2013 and lower than expected historical results, the Company tested definite-lived intangibles associated with the Phorus reporting unit for impairment as of September 30, 2013. The Company used a discounted cash flow method to estimate the fair value of the definite-lived intangibles and recognized an impairment charge for the amount that the carrying amount exceeded the fair value of such assets. Based on results of the test, the Company recorded an impairment charge of $2,460 within operating expenses in the consolidated statement of operations for the year ended December 31, 2013, consisting of $2,304 and $156 in write-downs of existing technology and non-compete agreements, respectively.
	As a result of the aforementioned revised forecasts and lower than expected historical results, the Company concluded that there were indications of potential impairment of the goodwill and indefinite-lived intangibles attributable to the Phorus reporting unit during the third quarter of 2013. Therefore, the Company conducted an interim impairment test of goodwill and indefinite-lived intangibles associated with the Phorus reporting unit as of September 30, 2013. The Company used a discounted cash flow method to estimate the fair value of the indefinite-lived intangibles and recognized an impairment charge for the amount that the carrying amount of the assets exceeded the fair value of such assets. Based on results of the test, the Company recorded an impairment charge for IPR&D of $360 within operating expenses in the consolidated statement of operations for the year ended December 31, 2013.
	For the goodwill impairment test as of September 30, 2013, the Phorus reporting unit had negative carrying value, and thus the Company performed a qualitative assessment and determined that it was more likely than not that a goodwill impairment existed due to the revised forecasts and lower than expected historical results. As such, the Company proceeded to step two of the goodwill impairment test, whereby an impairment charge would be recognized to the extent that the carrying value of goodwill associated with the Phorus reporting unit exceeded the estimated fair value. The Company estimated the fair value of the goodwill as the difference between the estimated fair value of the reporting unit and the estimated fair values of the individual assets and liabilities. The Company estimated the fair value of the reporting unit using both the income and market approaches, including a discounted cash flow method, and estimated that the fair value of goodwill associated with the Phorus reporting unit substantially exceeded the carrying value. As such, the Company did not recognize an impairment charge on the Phorus goodwill.
	Additionally, in the fourth quarter of 2013, the Company performed its annual assessment of goodwill impairment for both the Phorus reporting unit and the rest of the Company as of October 31, 2013. Based on the assessments, no goodwill impairment was identified. To date, there has been no impairment of goodwill.
	The following table summarizes the changes in goodwill:
		Goodwill
	Balance at December 31, 2011	$	1,257
	Increase in goodwill related to acquisitions		51,174
	Preliminary purchase price allocation adjustments, net		(1,117	)
	Measurement period adjustments applied retrospectively, net		(2,896	)
	Balance at December 31, 2012 and 2013	$	48,418
	The following table summarizes the Company's other intangible assets:
					As of December 31, 2013							As of December 31, 2012
		Weighted			Gross		Accumulated			Net		Gross		Accumulated			Net
		Average			Amount(1)		Amortization			Carrying		Amount		Amortization			Carrying
		Life (Years)								Amount							Amount
	Existing technology		6		$	16,763	$	(8,193	)	$	8,570	$	17,918	$	(5,651	)	$	12,267
	Customer relationships		8			45,590		(8,792	)		36,798		45,590		(3,074	)		42,516
	Non-compete		2			384		(350	)		34		540		(131	)		409
	Tradename		5			3,000		(1,002	)		1,998		3,000		(440	)		2,560
	Patents		5			3,036		(953	)		2,083		2,170		(779	)		1,391
	Trademarks		10			669		(297	)		372		598		(251	)		347
	Total amortizable intangible assets					69,442		(19,587	)		49,855		69,816		(10,326	)		59,490
	IPR&D					370		—			370		1,910		—			1,910
	Total intangible assets				$	69,812	$	(19,587	)	$	50,225	$	71,726	$	(10,326	)	$	61,400
	-1
	Includes write-downs of $2,304 for existing technology, $156 for non-compete, and $360 for IPR&D, which are reflected within operating expenses in the consolidated statement of operations for the year ended December 31, 2013.
	The following table summarizes amortization of intangibles included in the Company's consolidated statements of operations:
		For the Years Ended
		December 31,
		2013			2012		2011
	Cost of revenue(1)	$	8,848		$	4,151	$	731
	Operating expenses		1,001			641		641
	Total amortization of intangible assets	$	9,849		$	4,792	$	1,372
	-1
	Includes amortization of $588 for the year ended December 31, 2013 associated with certain service arrangements classified as other assets on the consolidated balance sheet.
	The Company expects the future amortization of intangible assets held at December 31, 2013 to be as follows:
	Years Ending December 31,	Estimated
		Amortization
		Expense
	2014	$	9,047
	2015		8,996
	2016		8,293
	2017		7,932
	2018		6,806
	2019 and thereafter		8,781
	Total	$	49,855

Accrued_Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2013
Accrued Expenses	'
Accrued Expenses	'
	Note 8—Accrued Expenses
	Accrued expenses consist of the following:
		As of December 31,
		2013		2012
	Accrued payroll and related benefits	$	9,073	$	9,810
	Contingent consideration(1)		400		2,200
	Other		2,669		3,851
	Total accrued expenses	$	12,142	$	15,861
	-1
	For additional information, refer to Notes 4, 6, and 10, "Fair Value Measurements", "Business Combinations", and "Commitments and Contingencies", respectively.

Longterm_Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2013
Long-term Debt	'
Long-term Debt	'
	Note 9—Long-term Debt
	On July 18, 2012, the Company entered into a Loan Agreement (the "Loan Agreement"), between the Company and Union Bank, N.A. ("Union Bank"), together with the other lenders thereunder from time to time (collectively, the "Lenders"). The Loan Agreement provides the Company with a $30,000 revolving line of credit (the "Revolver"), with a $5,000 sublimit for the issuance of standby and commercial letters of credit, to use to finance permitted acquisitions and for working capital and general corporate purposes. The Company may increase the Revolver by up to $20,000 subject to certain conditions. As of December 31, 2013 and 2012, $30,000 was outstanding under the Revolver.
	Amounts borrowed under the Revolver bear interest, at the option of the Company, at either (i) LIBOR (as defined in the Loan Agreement) plus 1.0% or (ii) the higher of (a) the rate of interest most recently announced by Union Bank as its prime rate or (b) the Federal Funds Rate plus 0.50%. Pursuant to the Loan Agreement, the Company is required to pay an annual commitment fee of 0.25% on the unused portion of the Revolver.
	The Company's ability to borrow amounts under the Revolver is conditioned upon its compliance with specified covenants, including certain reporting covenants and financial covenants that require the Company to maintain a (i) minimum rolling four quarter adjusted EBITDA of $32,000, (ii) maximum leverage ratio, defined as funded debt divided by adjusted EBITDA, not to exceed 1.50 to 1.00 and (iii) minimum liquidity amount of $30,000. In addition, the Loan Agreement contains covenants that restrict, among other things, the Company's ability to dispose of property, enter into mergers, acquisitions or other business combination transactions, grant liens, pay dividends and make certain other restricted payments.
	The Loan Agreement contains customary events of default. All advances under the Revolver will become due and payable on July 18, 2015, or earlier in the event of a default. Accordingly, the Revolver has been classified as a long-term liability on the consolidated balance sheet. Upon the occurrence and during the continuance of an event of default, the Lenders may declare all outstanding amounts under the Revolver immediately due and payable, and may terminate commitments to make any additional advances thereunder.
	Union Bank and its affiliates may in the future perform, for the Company and its affiliates, various commercial banking, investment banking, financial advisory or other services, for which they may in the future receive customary compensation and expense reimbursement.
	In connection with the Loan Agreement, the Company and all of its U.S. subsidiaries, entered into a security agreement with Union Bank as agent for the Lenders pursuant to which the Company and its U.S. subsidiaries granted the Lenders a first priority perfected security interest in (i) all their respective current and later acquired tangible and intangible assets in current and future domestic subsidiaries and (ii) up to 65% of the stock of the Company's current and future foreign subsidiaries to secure amounts borrowed under the Revolver.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies	'
Commitments and Contingencies	'
	Note 10—Commitments and Contingencies
	Office facilities and certain office equipment are leased under operating leases expiring in various years through 2029. Some leases contain renewal options and escalation clauses including increases in annual rents based upon increases in the consumer price index. Minimum future rental payments under non-cancelable operating leases are as follows:
	Years Ending December 31,
	2014	$	2,923
	2015		2,273
	2016		1,759
	2017		810
	2018		498
	2019 and thereafter		1,228
		$	9,491
	Rent expense amounted to $2,270, $1,874 and $1,359 for the years ended December 31, 2013, 2012 and 2011, respectively.
	Pursuant to the amended Phorus Asset Purchase Agreement, contingent consideration of $500 could be due and payable at the end of 2014, and $1,000 could be due and payable at the end of 2015. As of December 31, 2013, $500 was paid out under the contingent consideration arrangement. For additional information, refer to Notes 4 and 6, "Fair Value Measurements" and "Business Combinations", respectively.
	Under existing service arrangements, the Company may be obligated to pay up to $7,545 over the next three years if certain milestones are achieved.
	During its normal course of business, the Company has made certain indemnities, commitments and guarantees under which it may be required to make payments in relation to certain transactions. Those indemnities include intellectual property indemnities to the Company's customers in connection with the sale of its products and the licensing of its technology, indemnities for liabilities associated with the infringement of other parties' technology based upon the Company's products and technology, and indemnities to directors and officers of the Company to the maximum extent permitted under the laws of the State of Delaware. The duration of these indemnities, commitments and guarantees varies, and in certain cases, is indefinite. The majority of these indemnities, commitments and guarantees do not provide for any limitation of the maximum potential future payments that the Company could be obligated to make. To date, the Company has not been required to make any payments and has not recorded any liability for these indemnities, commitments and guarantees in the accompanying consolidated balance sheets. The Company does, however, accrue for losses for any known contingent liability, including those that may arise from indemnification provisions, when future payment is probable.
	In the normal course of business, the Company is subject to certain claims and litigation, including unasserted claims. The Company is of the opinion that, based on information presently available, the outcome of any such legal matters will not have a material adverse effect on the Company's consolidated financial statements.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Taxes	'
Income Taxes	'
	Note 11—Income Taxes
	U.S. and foreign income (loss) before income taxes and details of the provision (benefit) for income taxes were as follows:
		For the Years Ended
		December 31,
		2013			2012			2011
	U.S.	$	(18,019	)	$	(22,498	)	$	7,667
	Foreign		25,140			14,265			22,263
	Income (loss) before income taxes	$	7,121		$	(8,233	)	$	29,930
	Current:
	Federal	$	(1,135	)	$	(2,289	)	$	610
	State		19			(1,080	)		179
	Foreign		7,331			5,642			7,999
	Total current		6,215			2,273			8,788
	Deferred:
	Federal		(13,301	)		2,974			2,435
	State		(1,133	)		971			724
	Foreign		(415	)		1,447			(286	)
	Total deferred		(14,849	)		5,392			2,873
	Provision (benefit) for income taxes	$	(8,634	)	$	7,665		$	11,661
	The components of temporary differences that gave rise to deferred income tax were as follows:
		As of December 31,
		2013			2012(1)
	Deferred tax assets:
	Accrued revenues	$	1,496		$	1,283
	Net operating loss carryforwards		5,364			6,028
	Credit carryforwards, net of unrecognized tax benefits		13,800			11,706
	Depreciation and amortization		1,737			1,173
	Stock-based compensation		8,026			7,506
	Accruals, reserves and other		1,236			1,704
	Acquired intangibles		2,551			1,180
	Total gross deferred tax assets		34,210			30,580
	Valuation allowance		(579	)		(8,702	)
	Total deferred tax assets		33,631			21,878
	Deferred tax liabilities:
	Acquired intangible		16,130			18,807
	Prepaid expenses		47			64
	Undistributed earnings of foreign subsidiary		—			404
	Total deferred tax liabilities		16,177			19,275
	Deferred tax assets, net	$	17,454		$	2,603
	Current deferred tax assets, net	$	5,787		$	1,998
	Non-current deferred tax assets, net		11,667			605
	Deferred tax assets, net	$	17,454		$	2,603
	-1
	Includes measurement period adjustments applied retrospectively, including a $3,534 decrease to the valuation allowance and net operating loss carryforwards.
	The Company regularly evaluates the need for a valuation allowance against its deferred tax assets. In 2012 the Company's U.S. operations had moved to a position of cumulative loss for the then most recent three-year period. As such, the Company established a valuation allowance against its U.S. federal deferred tax assets as a result of determining that it was more likely than not that its deferred tax assets would not be realized.
	During the fourth quarter of 2013, the Company substantially completed a tax planning strategy which the Company believes will generate sufficient U.S. taxable income to make it more likely than not that its net U.S. federal deferred tax assets will be realized. The tax planning strategy included a special one-time transfer of certain Japan and Taiwan intellectual property licensing rights that was transacted on January 1, 2014, creating U.S. taxable income. As of the transfer date, the U.S. will now have a right to share in future royalty income from customers in Japan and Taiwan, in addition to royalty income from customers in the U.S. The transaction will not result in a change in the Company's accumulated reinvested earnings in its foreign subsidiaries, and will not affect the Company's status of being permanently reinvested in its foreign subsidiaries. As a result of the U.S. taxable income created by this tax planning strategy, the Company has concluded that it is more likely than not that the U.S. federal valuation allowance is not necessary. Accordingly, the Company released all of the U.S. federal valuation allowance against net U.S. federal deferred tax assets resulting in a $7,919 increase in the 2013 benefit for income taxes.
	The intellectual property rights transferred on January 1, 2014 will not result in a change in the Company's accumulated reinvested earnings in its foreign subsidiaries, and thus no deferred tax liability was required to be recorded in 2013. As a result, the financial statement impact of the transfer will be reflected in the Company's income tax provision for the quarter ending March 31, 2014 as a tax expense, net of foreign tax credits, offset by the establishment of a deferred tax asset related to future tax deductions under Section 197 of the Internal Revenue Code ("IRC").
	As of December 31, 2013, the Company had approximately $29,943 in tax loss carryforwards. These tax loss carryforwards consist of federal and state net operating losses of $14,574 and $15,369, respectively, and begin to expire in 2022 and 2018, respectively. Included in these tax loss carryforwards are stock-based compensation deductions that, when fully utilized, reduce cash income taxes and will result in a financial statement income tax benefit of $1,465. The future income tax benefit, if realized, will be recorded to additional paid-in capital on the consolidated balance sheet. The Company follows the with-and-without approach for determining when the stock-based compensation deductions are considered realized. As of December 31, 2013, the Company had foreign tax credit carryforwards of $15,745, which begin to expire in 2015, and R&D and other credits of $6,043, which begin to expire in 2019. Utilization of certain federal tax loss carryforwards and credit carryforwards are subject to an annual limitation under IRC Section 382.
	The income tax provision (benefit) excludes the current year income tax deductions related to the issuance of common stock from the exercise of stock options for which no compensation expense was recorded for accounting purposes or for which the income tax deduction exceeded the expense recorded for accounting purposes.
	The provision (benefit) for income taxes differs from the amount obtained by applying the federal statutory income tax rate to income (loss) before income taxes as follows:
		For the Years Ended
		December 31,
		2013			2012			2011
	Statutory federal rate		35	%		35	%		35	%
	State income taxes, net		(5.5	)		(2.1	)		1.8
	Effect of varying foreign rates		(96.5	)		50.1			(17.8	)
	Foreign withholding taxes		78.8			(60.2	)		18.3
	Unremitted earnings of foreign subsidiary		(3.4	)		(9.7	)		—
	Non-deductible transaction costs		—			(13.8	)		—
	Non-deductible meals and entertainment		1			(0.6	)		0.1
	Stock-based compensation expense		7			(7.6	)		1.5
	Research and development credits		(11.9	)		—			(1.0	)
	Unrecognized tax benefits		8			38.3			0.9
Tax audit settlements		(11.6	)		(108.9	)		—
Deferred tax asset adjustment		(12.0	)		3.6			—
Valuation allowance		(111.2	)		(16.4	)		—
Other		1.1			(0.8	)		0.2
Effective tax rate		(121.2	)%		(93.1	)%		39	%
The Company has not provided for U.S. income taxes or foreign withholding taxes in its effective tax rate on approximately $58,756 of undistributed earnings of foreign subsidiaries as of December 31, 2013. It is not practicable to calculate the unrecognized deferred tax liability on the unremitted earnings. The Company intends to reinvest these earnings indefinitely in operations outside of the U.S., and accordingly, no deferred tax liability has been established relative to these earnings.
As of December 31, 2013 and 2012, the Company's uncertain tax positions were $9,701 and $11,279, respectively, which were recorded in long-term deferred tax assets and other long-term liabilities. These amounts include $121 and $222, respectively, for accrued interest. The decrease in unrecognized tax benefits during the year ended December 31, 2013 was primarily attributable to a reduction of tax reserves from tax audits that were effectively settled, partially offset by uncertain tax positions relating to transfer pricing positions taken with respect to the Company's foreign subsidiaries and the California franchise tax sourcing methodology. These unrecognized tax benefits would affect the Company's effective tax rate if recognized. The Company believes that it has adequately provided for all tax positions based on its assessment of many factors, including past experience and interpretations of tax law applied to the facts of each matter. However, due to inherent uncertainties in estimating accruals for uncertain tax positions, amounts asserted by tax authorities could be materially different than the amounts accrued by the Company. Accordingly, the Company's provision on federal, state and foreign tax-related matters to be recorded in the future may change as revised estimates are made or the underlying matters are settled or otherwise resolved. As of December 31, 2013, the Company does not believe that its estimates, as otherwise provided for, on such tax positions will significantly increase or decrease within the next twelve months.
The following is a reconciliation of the unrecognized tax benefits.
	Unrecognized
	Tax Benefits
Balance at January 1, 2011	$	7,205
Additions for tax positions of prior years		240
Additions for tax positions of the current year		1,277
Settlements		(1,459	)
Balance at December 31, 2011		7,263
Additions for tax positions of prior years		6,868
Additions for tax positions of the current year		427
Settlements		(3,501	)
Balance at December 31, 2012		11,057
Additions for tax positions of prior years		100
Additions for tax positions of the current year		804
Settlements		(2,135	)
Lapse of applicable statutes		(246	)
Balance at December 31, 2013	$	9,580
The Company may, from time to time, be assessed interest or penalties by major tax jurisdictions, although any such assessments historically have been minimal and immaterial to the Company's consolidated financial statements.
The Company, or one of its subsidiaries, files income tax returns in the U.S. and other foreign jurisdictions. With few exceptions, the Company is no longer subject to U.S. federal income tax examinations by tax authorities for the years prior to 2009. The Internal Revenue Service ("IRS") is examining the Company's 2009 to 2011 federal income tax returns, including certain prior period carryforwards. In addition, the California Franchise Tax Board is conducting a state tax examination for the years 2009 to 2010. Judgment is required in determining the consolidated provision for income taxes as the Company considers its worldwide taxable earnings and the impact of the audit process conducted by various tax authorities. The final outcome of tax audits by any foreign jurisdictions, the IRS and various state governments could differ materially from that which is reflected in the consolidated financial statements.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Stock-Based Compensation	'
Stock-Based Compensation	'
	Note 12—Stock-Based Compensation
	The Company measures and recognizes compensation expense on a straight-line basis over the requisite service period for all share-based payment awards made to employees and directors in the consolidated financial statements.
	The Company's stock-based compensation costs and related income tax benefits were as follows:
		For the Years Ended
		December 31,
		2013			2012			2011
	Stock-based compensation cost:
	Cost of revenue	$	—		$	—		$	12
	Selling, general and administrative		8,872			8,940			7,622
	Research and development		2,855			2,376			1,649
	Total stock-based compensation cost	$	11,727		$	11,316		$	9,283
	Income tax benefit	$	4,779		$	4,611		$	3,783
	Various Stock Plans
	Stock Option and Restricted Stock Plans
	In 1997, the Company adopted a stock option plan (the "1997 Plan") for eligible employees, directors and consultants. In 2002, the Company adopted a stock option plan (the "2002 Plan") for management and certain key employees. Options granted under the plans may be incentive stock options intended to satisfy the requirements of Section 422 of the IRC of 1986, as amended, and the regulations thereunder, or non-qualified options. Options generally become exercisable over a four-year period and expire in ten years. The total number of shares of common stock that may be issued under both plans amounted to a maximum of 2,071.
	In April 2003, the Company adopted the 2003 Equity Incentive Plan (the "2003 Plan") under which an additional 929 shares were authorized for future issuances of common stock. Additionally, the shares available for issuances of common stock options under the 1997 and 2002 Plans were transferred to the 2003 Plan for future issuances of common stock options. The 2003 Plan contained a provision (the "Evergreen Provision") for an automatic increase in the number of shares available for grant starting January 1, 2004 and each January thereafter until and including January 1, 2013, subject to certain limitations, by a number of shares equal to the lesser of: (i) four percent of the number of shares issued and outstanding on the immediately preceding December 31, (ii) 1,500 shares, or (iii) a number of shares set by the Board of Directors.
	In May 2012, the Company adopted the 2012 Equity Incentive Plan (the "2012 Plan"). Additionally, the shares available for issuances of common stock under the 2003 Plan were transferred to the 2012 Plan for future issuances of common stock. The total number of shares of common stock that may be issued under the 2012 Plan amounted to a maximum of 1,500.
	In conjunction with the acquisition of SRS, the Company also acquired SRS' 2006 Stock Incentive Plan (the "2006 Plan") under which 234 shares were authorized for future issuances of common stock to: (i) former employees of SRS, and (ii) employees hired by the Company after the acquisition date of SRS, July 20, 2012. At the acquisition date of SRS, all outstanding equity awards under the 2006 Plan were tendered for cash.
	Stock Options
	The fair value of each employee option grant was estimated on the date of the grant using the Black-Scholes option pricing model with the following weighted average key assumptions:
		Years Ended
		December 31,
		2013			2012			2011
	Risk free interest rate		0.7	%		0.6	%		1.7	%
	Expected lives (years)		4.2			4			3.9
	Dividend yield		0	%		0	%		0	%
	Expected volatility		44	%		49	%		49	%
	The dividend yield was not calculated because the Company does not currently expect to pay a dividend. The expected life of the options granted was derived from the historical activity of the Company's options and represented the period of time that options granted were expected to be outstanding. The expected volatility was based on the historical volatility of the Company's common stock. The risk-free interest rate was the average interest rates of U.S. government bonds of comparable term to the options on the dates of the option grants.
	There were 724, 924 and 299 options granted during the years ended December 31, 2013, 2012 and 2011, respectively. The weighted-average grant-date fair value of options granted during the years ended December 31, 2013, 2012 and 2011 was $7.24, $10.25 and $17.68, respectively. Compensation expense for stock options was $5,507, $5,153 and $4,004 for the years ended December 31, 2013, 2012 and 2011, respectively.
	The following table summarizes stock option activity:
		Number of			Weighted-			Weighted-			Aggregate
		options			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Life (Years)
	Options outstanding at December 31, 2012		2,691		$	25.86
	Granted		724			20.22
	Exercised		(27	)		15.4
	Expired or cancelled		(69	)		27.54
	Options outstanding at December 31, 2013		3,319		$	24.68			6.5		$	7,999
	Options exercisable at December 31, 2013		1,833		$	24.24			4.9		$	5,171
	The aggregate intrinsic value of options exercised during the years ended December 31, 2013, 2012 and 2011 was $152, $1,399 and $3,911, respectively. As of December 31, 2013, total remaining unearned compensation related to unvested stock options was approximately $9,804, which will be amortized over the weighted-average remaining service period of 1.6 years.
	Restricted Stock
	Compensation expense on restricted stock awards and units was $3,529, $3,669 and $3,272 for the years ended December 31, 2013, 2012 and 2011, respectively. The following table summarizes restricted stock activity:
		Number of			Weighted-
		Shares			Average
					Grant-Date
					Fair Value
	Unvested stock at December 31, 2012		382		$	28.12
	Granted		91			19.95
	Vested		(142	)		27.26
	Forfeited		(25	)		27.06
	Unvested stock at December 31, 2013		306		$	26.14
	As of December 31, 2013, total remaining unearned compensation related to restricted stock was $5,245, which will be amortized over the weighted-average remaining service period of 1.5 years.
	Market Stock Units
	On February 27, 2011, the Compensation Committee of the Board of Directors of the Company approved market stock unit agreements ("MSU Agreements") for the grant of certain performance-based equity awards under the Company's 2003 Plan.
	Pursuant to the MSU Agreements, units payable in shares of common stock (the "Units") would vest based on the attainment of certain performance criteria regarding both the Company's total shareholder return and the performance of the Company as measured against the performance of the NASDAQ Composite Total Return Index ("NASDAQ" or "XCMP") over a 3-year performance period. This 3-year performance period began on January 1, 2011 and ended on December 31, 2013. In order for the Units to vest, the Company was required to satisfy a vesting threshold, defined as the Company achieving a total shareholder return equal to the greater of (i) 15% adjusted for inflation (using the Consumer Price Index); and (ii) 20% over the performance period.
	If this vesting threshold was satisfied, the number of Units that vest would be determined by comparing the Company's performance to the performance of the NASDAQ for the performance period. If the Company's performance was 20% greater than the return for the NASDAQ, then the "baseline" number of Units would vest. If the Company's performance exceeded this baseline level of performance, then a greater number of Units would vest on a 2.5:1 basis for each percentage point that the Company's performance was above 20% greater than the performance of the NASDAQ. The maximum number of Units that may vest was equal to 200% of each individual's baseline number of Units.
	If the Company outperformed the NASDAQ by more than 10%, but less than 20%, then the number of baseline Units that vest would be determined by reducing the baseline number for each individual on a 5:1 basis for the first five percentage points that the Company's performance was less than 20% greater than the performance of the NASDAQ and on a 15:1 basis for the next five percentage points that the Company's performance was less than 15% greater than the performance of the NASDAQ, such that if the Company outperformed NASDAQ by 10% or less, the number of Units that vest would be zero.
	If a "fundamental transaction" (as defined in the 2003 Plan, as amended) occurred prior to the end of the 3-year performance period, the performance period would end as of the consummation of the fundamental transaction and the pro rata portion of the Units, if any, that vest under the formulae described above would immediately vest, with the remainder of such Units vesting ratably over the remainder of the 3-year period (with accelerated vesting if a grantee was terminated without "cause" or quits with "good reason" after the fundamental transaction).
	Since the vesting of these performance-based equity awards was subject to market conditions, these awards were measured on the date of grant using the Monte Carlo simulation model. The Monte Carlo simulation model utilized multiple input variables that determined the probability of satisfying the market conditions stipulated in the award grant and calculated the fair market value for the performance units granted. The Monte Carlo simulation model also used stock price volatility and other variables to estimate the probability of satisfying the market conditions and the resulting fair value of the award.
	The Company granted 199 Units on February 27, 2011, which had an aggregate grant-date fair value of $5,287. Since February 27, 2011, the Company did not grant any additional Units, and 5 Units were forfeited in 2012. The aggregate grant-date fair value for these awards was recognized as compensation expense on a straight-line basis over the requisite service period, which began on the date of grant and ended on December 31, 2013. Compensation expense on shares of market stock units was $1,820, $1,826 and $1,509 for the years ended December 31, 2013, 2012 and 2011, respectively. As of December 31, 2013, the performance criteria were not met and the remaining 194 Units automatically expired.
	Employee Stock Purchase Plan
On April 17, 2003, the Company adopted the 2003 Employee Stock Purchase Plan and the 2003 Foreign Subsidiary Employee Stock Purchase Plan, under which, subject to certain limitations, the initial aggregate number of shares of stock that may be issued is 500, with a provision (the "Evergreen Provision") that provides for an automatic increase in the number of shares available for issuance on January 1, 2004 and each January 1 thereafter until and including January 1, 2013 by the lesser of: (i) 500 shares, (ii) one percent of the number of shares of all classes of common stock of the Company outstanding on that date, or (iii) a lesser amount determined by the Board of Directors.
On November 13, 2012, the Company amended and restated the 2003 Employee Stock Purchase Plan, renamed the 2013 Employee Stock Purchase Plan, and amended and restated the 2003 Foreign Subsidiary Employee Stock Purchase Plan, renamed the 2013 Foreign Subsidiary Employee Stock Purchase Plan (collectively "ESPP"). Both plans were approved by the stockholders of the Company at the annual meeting on June 6, 2013. Subject to certain limitations, the aggregate number of shares of stock that may be issued under both plans is 750. Under the ESPP, each eligible employee may authorize payroll deductions of up to 15% of their compensation to purchase shares of the Company's common stock on two purchase dates during the second and fourth quarter of each year. Each offering period has a 24-month duration with purchase periods of six month intervals. The purchase price per share for the common stock is equal to 85% of the lower of the closing market price per share of the Company's common stock on (i) the participant's entry date into the two-year offering period, or (ii) the end of each six-month purchase period within the offering period. The ESPP has a two-year look-back feature, whereby the offering period resets if the fair value of the Company's common stock on the first day of any purchase period is less than that on the original offering date. Each eligible employee's purchases are subject to a maximum of $25 in fair market value in any calendar year or 2.5 shares on any single purchase date.
The fair values were estimated at the date of grant using the Black-Scholes option pricing model with the following weighted average key assumptions:
	Years Ended
	December 31,
	2013			2012			2011
Risk free interest rate		0.2	%		0.2	%		0.1	%
Expected lives (years)		1.2			0.7			0.7
Dividend yield		0	%		0	%		0	%
Expected volatility		52	%		61	%		45	%
The dividend yield was not calculated because the Company does not currently expect to pay a dividend. The expected life represented the service period. The expected volatility was based on the historical volatility of the Company's common stock. The risk-free interest rate was the average interest rates of U.S. government bonds of comparable term to the service period.
Compensation expense under the ESPP was $871, $668 and $498 for the years ended December 31, 2013, 2012 and 2011, respectively.

Defined_Contribution_Plan

Defined Contribution Plan	12 Months Ended
	Dec. 31, 2013
Defined Contribution Plan	'
Defined Contribution Plan	'
	Note 13—Defined Contribution Plan
	The Company has savings and investment plans, including a savings plan that qualifies as a defined contribution plan under Section 401(k) of the IRC. The Company allows eligible employees to allocate up to 100% of the participant's eligible compensation, or 20% of the participant's eligible compensation if defined as a Highly Compensated Participant under Section 414(q) of the IRC through payroll deductions. All regular full-time employees on the U.S. payroll of the Company are eligible to participate in the plan. The Company provides a discretionary match of up to 100% of the first 4% of salary contributed to the plan and may match up to 6% of salary if certain financial targets are met. In 2010, the Company adopted a Roth 401(k) option. For the years ended December 31, 2013, 2012 and 2011, the costs of these matching contributions were $859, $656 and $577, respectively.

Stock_Repurchase_Plans

Stock Repurchase Plans	12 Months Ended
	Dec. 31, 2013
Stock Repurchase Plans	'
Stock Repurchase Plans	'
	Note 14—Stock Repurchase Plans
	In May 2011, the Company's Board of Directors authorized, subject to certain business and market conditions, the purchase of up to 1,000 shares of the Company's common stock in the open market or in privately negotiated transactions. Through the fourth quarter of 2011, the Company repurchased all shares of common stock under this authorization for an aggregate of $32,299.
	In February 2012, the Company's Board of Directors authorized, subject to certain business and market conditions, the purchase of up to 2,000 shares of the Company's common stock in the open market or in privately negotiated transactions. Through the fourth quarter of 2013, the Company repurchased all shares of its common stock under this authorization for an aggregate of $39,374.
	All shares repurchased under these authorizations were accounted for as treasury stock.
	Subsequent to December 31, 2013, the Company's Board of Directors authorized, subject to certain business and market conditions, the purchase of up to 2,000 shares of the Company's common stock in the open market or in privately negotiated transactions.

Segment_and_Geographic_Informa

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2013
Segment and Geographic Information	'
Segment and Geographic Information	'
	Note 15—Segment and Geographic Information
	The Company operates as a single reportable segment on an enterprise-wide basis. The Company generates revenue by licensing its technologies to consumer electronics manufacturers.
	The Company's revenue by geographical area, based on the customer's country of domicile, was as follows:
		For the Years Ended December 31,
		2013		2012		2011
	U.S.	$	12,998	$	11,693	$	10,838
	South Korea		45,051		27,110		22,549
	Japan		42,256		41,203		43,814
	Other international		24,843		20,643		19,721
	Total international		112,150		88,956		86,084
	Total revenues	$	125,148	$	100,649	$	96,922
	The following table sets forth long-lived tangible assets, net of accumulated depreciation, by geographic region:
		As of December 31,
		2013		2012
	U.S.	$	27,979	$	30,894
	International		2,137		2,431
	Total long-lived tangible assets, net of accumulated depreciation	$	30,116	$	33,325

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2013
Net Income (Loss) Per Share	'
Net Income (Loss) Per Share	'
	Note 16—Net Income (Loss) Per Share
	Basic net income (loss) per common share is calculated by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income per common share is calculated by dividing net income (loss) by the sum of the weighted average number of common shares outstanding plus the dilutive effect of outstanding stock options, unvested restricted stock and ESPP using the treasury stock method. Due to the net loss for the year ended December 31, 2012, all potential common shares are excluded from the diluted shares outstanding for that period.
	The following table sets forth the computation of basic and diluted net income (loss) per share:
		For the Years Ended December 31,
		2013		2012			2011
	Numerator:
	Net income (loss)	$	15,755	$	(15,898	)	$	18,269
	Denominator:
	Weighted average shares outstanding		18,097		17,466			16,982
	Effect of dilutive securities:
	Common stock options		153		—			494
	Restricted stock		67		—			97
	ESPP		17		—			2
	Diluted shares outstanding		18,334		17,466			17,575
	Basic net income (loss) per common share	$	0.87	$	(0.91	)	$	1.08
	Diluted net income (loss) per common share	$	0.86	$	(0.91	)	$	1.04
	Anti-dilutive shares excluded from the determination of diluted net income (loss) per share		3,163		2,697			442

Selected_Quarterly_Data_Unaudi

Selected Quarterly Data (Unaudited)	12 Months Ended
	Dec. 31, 2013
Selected Quarterly Data (Unaudited)	'
Selected Quarterly Data (Unaudited)	'
	Note 17—Selected Quarterly Data (Unaudited)
		For the Quarter Ended
		Mar. 31,			June 30,			Sep. 30,			Dec. 31,
	2013
	Revenues	$	32,728		$	27,188		$	28,159		$	37,073
	Gross profit	$	30,406		$	24,776		$	25,726		$	34,452
	Net income (loss)	$	(1,532	)	$	(2,027	)	$	1,988	-1	$	17,326	-2
	Basic earnings (loss) per share	$	(0.08	)	$	(0.11	)	$	0.11		$	0.98
	Diluted earnings (loss) per share	$	(0.08	)	$	(0.11	)	$	0.11		$	0.96
	2012(3)
	Revenues	$	26,885		$	21,754		$	22,235		$	29,775
	Gross profit	$	26,691		$	21,560		$	20,130		$	27,921
	Net income (loss)	$	4,045		$	(755	)	$	(19,086	)	$	(102	)
	Basic earnings (loss) per share	$	0.25		$	(0.05	)	$	(1.04	)	$	(0.01	)
	Diluted earnings (loss) per share	$	0.24		$	(0.05	)	$	(1.04	)	$	(0.01	)
	-1
	Includes an impairment charge of $2,820 relating to certain intangibles. For additional information, refer to Note 7, "Goodwill and Other Intangibles". Also, includes a recorded gain of $5,300 within operating expenses relating to changes in the fair value of contingent consideration. For additional information, refer to Note 4, "Fair Value Measurements".
	-2
	Includes a $7,919 tax benefit as a result of a release of the valuation allowance on U.S. federal deferred tax assets. For additional information, refer to Note 11, "Income Taxes". Also, includes a recorded gain of $700 within operating expenses relating to changes in the fair value of contingent consideration. For additional information, refer to Note 4, "Fair Value Measurements".
	-3
	During the quarter ended September 30, 2012, the Company acquired SRS and Phorus. For additional information, refer to Note 6, "Business Combinations".

Related_Party_Transaction

Related Party Transaction	12 Months Ended
	Dec. 31, 2013
Related Party Transaction	'
Related Party Transaction	'
	Note 18—Related Party Transaction
	The Company leased the former offices of SRS in Santa Ana, California from Daimler Commerce Partners, L.P., the general partner of which is Conifer Investments, Inc. ("Conifer"). The sole shareholders of Conifer are Thomas C.K. Yuen, a former member of the Company's Board of Directors, and his spouse, Misako Yuen, as co-trustees of the Thomas Yuen Family Trust. Mr. and Mrs. Yuen also serve as the executive officers of Conifer. The Company believes the terms and conditions of these leases were competitive based on a review of similar properties in the area with similar terms and conditions. On July 18, 2013, Mr. Yuen resigned from the Board of Directors due to personal reasons. There was no disagreement between Mr. Yuen and the Company relative to his resignation. Related party rent expense for these offices was $193 and $157 for the years ended December 31, 2013 and 2012, respectively.

SCHEDULE_IIVALUATION_AND_QUALI

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Dec. 31, 2013
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS	'
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS	'
	DTS, INC.
	SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS
	(Amounts in thousands)
	For the Years Ended December 31,	Balance at		Charged to		Deductions		Balance at
		Beginning		Costs and		From		End of Year
		of Year		Other		Reserves
	Allowance for doubtful accounts:(1)
	2013	$	679	$	709	$	—	$	1,388
	2012		251		460		32	$	679
	2011		226		107		82	$	251
	Deferred tax assets—valuation allowance:(2)
	2013	$	8,702	$	—	$	8,123	$	579
	2012		817	$	7,885		—	$	8,702
	2011		996		—		179	$	817
	-1
	The additions to the allowance for doubtful accounts represent the estimates of our bad debt expense based upon the factors for which we evaluate the collectability of our accounts receivable, as well as recoveries of previously reserved receivables. Deductions are the actual write-offs of the receivables.
	-2
	The additions to and reductions in the deferred tax assets—valuation allowance represent the portion of a deferred tax asset for which either: (i) it is more likely than not that a tax benefit will not be realized, or (ii) it is more likely than not a tax benefit will be realized.

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Significant Accounting Policies	'
Principles of Consolidation	'
	Principles of Consolidation
	The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") and pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). The consolidated financial statements include the accounts of the Company and its subsidiaries. The financial results for 2012 include SRS and Phorus from the dates of their respective acquisition. All material intercompany accounts and transactions have been eliminated.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in accordance with U.S. GAAP and pursuant to the rules and regulations of the SEC requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to revenue recognition, allowance for doubtful accounts, valuation of goodwill, other intangible assets, and long-lived assets, fair value of contingent consideration, stock-based compensation, income taxes and business combinations. The Company bases its estimates on historical and anticipated results, trends and on various other assumptions that it believes are reasonable under the circumstances, including assumptions as to future events. These estimates form the basis for making assumptions about the carrying values of assets and liabilities that are not readily apparent from other sources. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results could differ materially from those estimates.
Reclassifications	'
	Reclassifications
	Certain prior period amounts have been reclassified to conform to current year presentation.
Cash Equivalents	'
	Cash Equivalents
	The Company considers all short-term highly liquid investments with an original maturity of three months or less to be cash equivalents. Cash equivalents primarily consist of funds held in money market accounts. Cash equivalents are stated at cost plus accrued interest, which approximates fair value.
Investments	'
	Investments
	The Company considers, at the time that they are purchased, investments with maturities greater than three months, but less than one year, to be short-term investments. Investments that have maturities of more than one year are classified as long-term investments. Investments are classified as available-for-sale and are reported at fair value with unrealized gains or losses, if any, reported, net of tax, in accumulated other comprehensive income. The cost of investments sold is based on the specific identification method, and all income generated and realized gains or losses from investments are recorded to interest and other income (expense), net.
	The Company reviews its investments to identify and evaluate investments that have an indication of possible impairment. Factors considered in determining whether a loss is temporary include the length of time and extent to which fair value has been less than the cost basis, the financial condition and near-term prospects of the investee, and the Company's intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value. Credit losses and other-than-temporary impairments are declines in fair value that are not expected to recover and are charged to interest and other income (expense), net.
Concentration of Business and Credit Risk	'
	Concentration of Business and Credit Risk
	The Company markets its products and services to consumer electronics products manufacturers in the U.S. and internationally. Although the Company is generally subject to the financial well-being of the consumer electronics industry, management does not believe that the Company is subject to significant credit risk with respect to trade accounts receivable. Additionally, the Company performs ongoing credit evaluations of its customers and maintains allowances for potential credit losses which, when realized, have generally been within the range of management's expectations.
	Three customers accounted for 21%, 12% and 12%, respectively, of revenues for the year ended December 31, 2013. The revenue from one of the customers accounting for 12% of revenues for the year ended December 31, 2013 exceeded 10% of revenues due to royalty recoveries. Two customers accounted for 13% and 11%, respectively, of revenues for the year ended December 31, 2012. Two customers accounted for 16% and 12%, respectively, of revenues for the year ended December 31, 2011.
	One customer accounted for 51% of accounts receivable at December 31, 2013, that resulted largely from royalty recoveries. One customer accounted for 10% of accounts receivable at December 31, 2012, that resulted from royalty recoveries.
	The Company deposits its cash and cash equivalents in accounts with major financial institutions worldwide. At times, such deposits may be in excess of insured limits. The Company's investment accounts are with major financial institutions and include investment grade municipal securities and U.S. agency securities. The Company has not incurred any significant credit losses on its investments.
Allowance For Doubtful Accounts	'
	Allowance For Doubtful Accounts
	The Company continually monitors customer payments and maintains a reserve for estimated losses resulting from its customers' inability to make required payments. In determining the reserve, the Company evaluates the collectibility of its accounts receivable based upon a variety of factors. In cases where the Company becomes aware of circumstances that may impair a specific customer's ability to meet its financial obligations, the Company records a specific allowance against amounts due. For all other customers, the Company recognizes allowances for doubtful accounts based on its historical write-off experience in conjunction with the length of time the receivables are past due, customer creditworthiness, geographic risk and the current business environment. Actual future losses from uncollectible accounts may differ from the Company's estimates.
Property and Equipment	'
	Property and Equipment
	Property and equipment are recorded at cost, less accumulated depreciation. Depreciation is calculated using the straight-line method over the related assets' estimated useful lives, as follows:
	Machinery and equipment	2 to 5 years
	Software	2 to 7 years
	Office furniture and fixtures	3 to 7 years
	Leasehold improvements	Lesser of useful life or related lease term
	Building and improvements	Up to 35 years
	Expenditures that materially increase asset life are capitalized, while ordinary maintenance and repairs are expensed as incurred.
Capitalized Software Costs	'
	Capitalized Software Costs
	The Company capitalizes the costs of purchased software licenses, consulting costs and payroll-related costs incurred in developing or implementing internal use computer software. These costs are included in property and equipment, net on the consolidated balance sheets. Costs incurred during the preliminary project and post-implementation stages are charged to expense as incurred. The Company's capitalized software costs are amortized on a straight-line basis over the estimated useful life of the software upon being placed in service, two to seven years.
Long-Lived Assets	'
	Long-Lived Assets
	The Company periodically assesses potential impairments to its long-lived assets by performing an impairment review whenever events or changes in circumstances indicate that the carrying value may not be fully recoverable. Factors considered by the Company include, but are not limited to: significant underperformance relative to expected historical or projected future operating results; significant changes in the manner of use of the acquired assets or the strategy for the Company's overall business; and significant negative industry or economic trends. When the Company determines that the carrying value of a long-lived asset may not be recoverable based upon the existence of one or more of the above indicators of impairment, the Company estimates the future undiscounted cash flows expected to result from the use of the asset and its eventual disposition. If the sum of the expected future undiscounted cash flows and eventual disposition is less than the carrying amount of the asset, the Company recognizes an impairment charge. An impairment charge is reflected as the amount by which the carrying amount exceeds the fair market value of the asset, based on the fair market value if available, or discounted cash flows. To date, there has been no impairment of long-lived tangible assets.
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets
	The Company operates in one reportable and operating segment, but evaluates goodwill for impairment at the reporting unit level. Reporting units are identified based on the current organizational structure, availability of discrete financial information, and economic similarity of components under the Company's operating segment. During the annual strategic planning process in the third quarter of 2013, the Company changed the business model relating to Phorus resulting in the identification of the Phorus business as a separate reporting unit from the rest of the Company for the purpose of testing goodwill for impairment. Goodwill was reassigned to each reporting unit using the relative fair value approach. The Company evaluates the carrying value of goodwill and indefinite-lived intangibles for impairment on an annual basis as of October 31 of each year, or more frequently if events or circumstances indicate that the goodwill and other intangibles might be impaired.
	Impairment of indefinite-lived intangibles is tested by estimating the fair value of the assets, and an impairment charge would be recorded to the extent that the carrying amount of such assets exceeds the estimated fair value. Evaluation of the recoverability of goodwill includes valuation of the underlying reporting unit using fair value techniques, which may include both income and market approaches. If the carrying value of the reporting unit exceeds its estimated fair value, or if the reporting unit has a negative carrying value and the Company believes it is more likely than not that a goodwill impairment exists, the Company would proceed to estimate the fair value of the goodwill itself and compare it to the carrying value to test for impairment and quantify an impairment charge, if any. The Company would record an impairment charge in an amount equal to the excess of the carrying value of the goodwill over the estimated fair value. Goodwill impairment is measured subsequent to the completion of any impairment of all other intangible and long-lived assets associated with the reporting unit.
	The Company's definite-lived intangibles principally consist of customer relationships, acquired technology and developed patents and tradenames, which are being amortized over their respective estimated useful lives. The Company reviews such assets for impairment whenever events or changes in circumstances indicate an asset's carrying value may not be recoverable. Factors considered include, but are not limited to, significant underperformance relative to expected historical or projected future operating results; significant changes in the manner of use of the acquired assets or projected future operating results; significant changes in the strategy of the overall business; and significant negative industry or economic trends. Recoverability of an intangible is measured by comparing its carrying amount to the expected future undiscounted cash flows that the asset is expected to generate. If it is determined that an asset is not recoverable, an impairment charge is recorded in the amount by which the carrying amount of the asset exceeds its fair value.
	If the Company is unable to finalize the results of impairment tests prior to the issuance of the financial statements and an impairment charge is probable and can be reasonably estimated, the Company recognizes its best estimate of the loss in the current period financial statements and discloses that the amount is an estimate. The Company would then recognize any adjustments to that estimate in subsequent reporting periods, once the results of the impairment tests have been finalized.
	Costs incurred in securing patents and trademarks and protecting the Company's proprietary technology and brand name are capitalized. Patent and trademark costs are amortized over their estimated useful lives, typically five and ten years, respectively. The amortization period commences when the patent or trademark is issued.
	For additional information refer to Note 7, "Goodwill and Other Intangibles".
Business Combinations	'
	Business Combinations
	The Company includes the results of operations of the businesses that it has acquired in its consolidated results as of the respective dates of acquisition. However, as noted below in the revenue recognition policy, the Company did not begin to recognize revenue from per-unit licensing agreements acquired with SRS until the fourth quarter of 2012.
	The Company allocates the fair value of the purchase consideration of its acquisitions to the tangible assets, liabilities and intangible assets acquired, including in-process research and development ("IPR&D"), based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. The primary items that generate goodwill include the value of the synergies between the acquired companies and the Company and the acquired assembled workforce, neither of which qualifies as an identifiable intangible asset. IPR&D is initially capitalized at fair value as an intangible asset with an indefinite life and assessed for impairment thereafter. When the IPR&D project is complete, it is reclassified as an amortizable purchased intangible asset and is amortized over its estimated useful life. If an IPR&D project is abandoned, the Company records a charge for the value of the related intangible asset in its consolidated statement of operations in the period it is abandoned. The fair value of contingent consideration associated with acquisitions is remeasured each reporting period and adjusted accordingly. Acquisition and integration related costs are recognized separately from the business combination and are expensed as incurred.
Revenue Recognition	'
	Revenue Recognition
	The Company recognizes revenue when persuasive evidence of a sales arrangement exists, delivery has occurred or services have been rendered, the buyer's price is fixed or determinable and collection is reasonably assured. Revenues from arrangements involving license fees, up-front payments and milestone payments, which are received or billable by the Company in connection with other rights and services that represent continuing obligations of the Company, are deferred until all of the elements have been delivered or until the Company has established objective and verifiable evidence of the fair value of the undelivered elements.
	Revenue from licensing audio technology, trademarks and know-how is generated from licensing agreements with consumer electronics products manufacturers that pay a per-unit license fee for products manufactured or shipped, as set forth in those license agreements. Licensees generally report manufacturing or shipping information within 30 to 60 days after the end of the quarter in which such activity takes place. Consequently, the Company recognizes revenue from these licensing agreements on a three-month lag basis, generally in the quarter following the quarter of manufacture or shipment, provided amounts are fixed or determinable and collection is reasonably assured, since the Company cannot reliably estimate the amount of revenue earned prior to the receipt of such reports. Use of this lag method allows for the receipt of licensee royalty reports prior to the recognition of revenue.
	Certain cash collections from per-unit licensing agreements acquired with SRS during the year ended December 31, 2012 were the result of product shipments prior to July 20, 2012, the acquisition date. Therefore, the Company did not recognize revenue from these per-unit licensing agreements and certain other licensing arrangements acquired with SRS during the year ended December 31, 2012. Accordingly, the Company recognized revenue from per-unit licensing agreements acquired with SRS that resulted from product shipments after the acquisition date.
	For certain licensing agreements, licensees pay a flat fee for the right to license certain technology over the contract term. Typically, the agreement stipulates a flat fee that corresponds to a minimum number of units or dollars, with additional per-unit fees for any units or dollars exceeding the minimum. For these agreements, the Company has continuing obligations relating to other rights and services provided over the term of the contract. As such, the Company recognizes the minimum or flat fee amount on these agreements as revenue ratably over the duration of contract term as all contractual obligations are met. Consistent with the aforementioned policy for per-unit license fee agreements, the Company recognizes revenue relating to any additional per-unit fees on a quarter lag basis, since the Company cannot reliably estimate the amount of revenue earned from additional units manufactured or shipped prior to the receipt of licensee reports.
	The Company actively polices and enforces its intellectual property, and pursues third parties who utilize its intellectual property without a license or who have under-reported the amount of royalties owed under a license agreement with it. As a result of these activities, from time to time, the Company may recognize royalty revenues that relate to infringements that occurred in prior periods. These royalty recoveries may cause revenues to be higher than expected during a particular reporting period and may not occur in subsequent periods. Differences between amounts initially recognized and amounts subsequently audited or reported as an adjustment to those amounts due from licensees, will be recognized in the period such adjustment is determined or contracted, as appropriate.
	Deferred revenues arise primarily from payments for licensing audio technology received in advance of the culmination of the earnings process. Deferred revenues will be recognized as revenue in future periods when the applicable revenue recognition criteria are met. Typically, deferred revenues arise from flat fee arrangements that allow licensees to manufacture an unlimited number of units over a specified term, and accordingly, these deferred revenues will be recognized as revenue ratably over the term of the arrangement.
	Licensing revenue is recognized gross of withholding taxes that are remitted by the Company's licensees directly to their local tax authorities. For the years ended December 31, 2013, 2012 and 2011, withholding taxes were $5,610, $4,970, and $5,537, respectively.
Research and Development ("R&D") Costs	'
	Research and Development ("R&D") Costs
	The Company conducts its R&D internally and expenses are primarily comprised of the following types of costs incurred in performing research and development activities: salaries and benefits, related employee expenses, allocated overhead, contract services, and consultants. R&D costs are expensed as incurred.
Foreign Currency Translation	'
	Foreign Currency Translation
	The functional currency of one of the Company's wholly-owned subsidiaries is the currency of the primary economic environment in which it operates. The assets and liabilities of this wholly-owned subsidiary are translated at the prevailing rate of exchange at the balance sheet date, while the results of operations are translated at the average exchange rate in effect for the period. The translation adjustments resulting from translating the functional currency into U.S. dollars have been deferred as a component of accumulated other comprehensive income in stockholders' equity.
	The functional currency of the Company's other wholly-owned subsidiaries is the U.S. dollar and accordingly, nonmonetary balance sheet accounts are remeasured with the appropriate historical rates. All other balance sheet accounts are translated at the prevailing rate of exchange at the balance sheet date, while the results of operations are translated at the average exchange rate in effect for the period. The gains and losses resulting from this remeasurement and translation are reflected in the determination of net income (loss).
	To date, annual foreign currency translation adjustments, gains and losses have not been significant.
Comprehensive Income (Loss)	'
	Comprehensive Income (Loss)
	Comprehensive income (loss) includes all changes in stockholders' equity during a period from non-owner sources. To date, accumulated other comprehensive income is comprised mostly of foreign currency translation.
Advertising Expenses	'
	Advertising Expenses
	Advertising and promotional costs are expensed as incurred and amounted to $4,408, $3,584, and $2,957 for the years ended December 31, 2013, 2012 and 2011, respectively.
Treasury Stock	'
	Treasury Stock
	Repurchased shares of the Company's common stock are held as treasury shares until they are reissued or retired. When the Company reissues treasury stock, and the proceeds from the sale exceed the average price that was paid by the Company to acquire the shares, the Company records such excess as an increase in additional paid-in capital. Conversely, if the proceeds from the sale are less than the average price the Company paid to acquire the shares, the Company records such difference as a decrease in additional paid-in capital to the extent of increases previously recorded, with the balance recorded as a decrease in retained earnings.
Restricted Stock Withholdings	'
	Restricted Stock Withholdings
	The Company issues restricted stock units as part of its equity incentive plans. For a majority of the restricted stock granted, the number of shares released on the date the restricted stock vests is net of the statutory withholding requirements that the Company pays to the appropriate taxing authorities on behalf of its employees. The shares repurchased to satisfy the statutory withholding requirements are immediately and effectively retired.
Income Taxes	'
	Income Taxes
	The Company utilizes the asset and liability method of accounting for income taxes. Under this method, the deferred tax assets and liabilities are measured each year based on the difference between the financial statement and tax basis of assets and liabilities at the applicable enacted tax rates. The deferred tax provision is the result of changes in the deferred tax assets and liabilities. The Company recognizes interest and penalties related to income taxes in the provision for income taxes. Additionally, a valuation allowance is recorded for that portion of deferred tax assets for which it is more likely than not that the assets will not be realized. In assessing the need for a valuation allowance, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial performance. The Company believes it is more likely than not that its forecasted income, including income generated as a result of a tax planning strategy transacted on January 1, 2014, will be sufficient to realize the deferred tax assets. In the event that all or part of the deferred tax assets are determined not to be realizable in the future, an adjustment to the valuation allowance may be necessary. A valuation allowance adjustment would be recorded in the provision for income taxes in the period such determination is made.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	The carrying amount of cash equivalents, short-term investments, accounts receivable, accounts payable and accrued liabilities approximates fair value due to the short-term nature of these instruments. Long-term debt approximates fair value due to the variable rate nature of the debt.
Recent Accounting Pronouncement	'
	Recent Accounting Pronouncement
	In July 2013, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2013-11, "Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists." This standard provides guidance regarding when an unrecognized tax benefit should be classified as a reduction to a deferred tax asset or when it should be classified as a liability in the consolidated balance sheet. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption and retrospective application is permitted. The Company is evaluating the potential impact of this adoption on its consolidated financial statements.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Significant Accounting Policies	'
Schedule of estimated useful lives	'
	Machinery and equipment	2 to 5 years
	Software	2 to 7 years
	Office furniture and fixtures	3 to 7 years
	Leasehold improvements	Lesser of useful life or related lease term
	Building and improvements	Up to 35 years

Cash_Cash_Equivalents_and_Inve1

Cash, Cash Equivalents and Investments (Tables)	12 Months Ended
	Dec. 31, 2013
Cash, Cash Equivalents and Investments	'
Schedule of cash, cash equivalents and investments	'
		As of December 31,
		2013		2012
	Cash and cash equivalents:
	Cash	$	26,374	$	17,433
	Money market accounts		39,651		40,398
	Total cash and cash equivalents	$	66,025	$	57,831
	Short-term investments:
	Certificates of deposit	$	—	$	4,189
	U.S. government and agency securities		5,004		10,025
	Total short-term investments	$	5,004	$	14,214
	Long-term investments:
	U.S. government and agency securities	$	—	$	5,000
	Total long-term investments	$	—	$	5,000

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Schedule of financial assets and liabilities, measured at fair value on a recurring basis	'
					Fair Value Measurements at Reporting
					Date Using
	Assets (Liabilities)	Total			Quoted		Significant		Significant
					Prices in		Other		Unobservable
					Active		Observable		Inputs
					Markets for		Inputs		(Level 3)
					Identical		(Level 2)
					Assets
					(Level 1)
	As of December 31, 2013
	U.S. government and agency securities	$	5,004		$	—	$	5,004	$	—
	Contingent consideration(1)	$	(1,000	)	$	—	$	—	$	(1,000	)
	As of December 31, 2012
	Certificates of deposit	$	4,189		$	—	$	4,189	$	—
	U.S. government and agency securities	$	15,025		$	—	$	15,025	$	—
	Contingent consideration(2)	$	(7,500	)	$	—	$	—	$	(7,500	)
	-1
	As of December 31, 2013, $400 and $600 were classified in accrued expenses and other long-term liabilities, respectively, on the consolidated balance sheet.
	-2
	As of December 31, 2012, $2,200 and $5,300 were classified in accrued expenses and other long-term liabilities, respectively, on the consolidated balance sheet.
Summary of changes in the fair value of assets (liabilities) categorized as Level 3	'
	Balance at December 31, 2012	$	(7,500	)
	Payment of contingent consideration		500
	Change in fair value of contingent consideration(1)		6,000
	Balance at December 31, 2013	$	(1,000	)
	-1
	This change is reflected within operating expenses in the consolidated statement of operations.

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property and Equipment	'
Schedule of property and equipment	'
		As of December 31,
		2013			2012
	Land	$	6,600		$	6,600
	Building and improvements		21,433			21,342
	Machinery and equipment		5,264			4,629
	Office furniture and fixtures		7,560			6,824
	Leasehold improvements		4,409			4,030
	Software		6,738			6,568
			52,004			49,993
	Less: Accumulated depreciation		(21,888	)		(16,668	)
	Property and equipment, net	$	30,116		$	33,325

Business_Combinations_Tables

Business Combinations (Tables) (SRS)	12 Months Ended
	Dec. 31, 2013
SRS	'
Business Combinations	'
Schedule of final purchase price allocation, as adjusted	'
		Weighted				Estimated
		Average				Fair Value
		Estimated
		Useful
		Life (years)
	Cash and cash equivalents						23,298
	Short-term investments						8,529
	Accounts receivable						9,835
	Prepaid expenses and other current assets						1,628
	Income taxes receivable						200
	Property and equipment						1,027
	Goodwill						41,708
	Identifiable intangible assets:
	Customer relationships		8		44,540
	Developed technology		6		7,920
	Trademarks/tradenames		5		2,810
	IPR&D				1,180
	Total identifiable intangible assets						56,450
	Deferred tax assets						5,882
	Long-term investments						249
	Accounts payable						(476	)
	Accrued expenses						(2,279	)
	Deferred revenue						(506	)
	Deferred tax liabilities						(19,978	)
	Other long-term liabilities						(782	)
	Total purchase price					$	124,785
Schedule of acquisition and integration related costs	'
		For the Years Ended
		December 31,
		2013		2012
	Selling, general and administrative	$	1,520	$	13,276
	Research and development		38		2,234
	Total acquisition and integration related costs	$	1,558	$	15,510

Goodwill_and_Other_Intangibles1

Goodwill and Other Intangibles (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Intangibles	'
Summary of changes in goodwill	'
		Goodwill
	Balance at December 31, 2011	$	1,257
	Increase in goodwill related to acquisitions		51,174
	Preliminary purchase price allocation adjustments, net		(1,117	)
	Measurement period adjustments applied retrospectively, net		(2,896	)
	Balance at December 31, 2012 and 2013	$	48,418
Summary of the Company's other intangible assets	'
					As of December 31, 2013							As of December 31, 2012
		Weighted			Gross		Accumulated			Net		Gross		Accumulated			Net
		Average			Amount(1)		Amortization			Carrying		Amount		Amortization			Carrying
		Life (Years)								Amount							Amount
	Existing technology		6		$	16,763	$	(8,193	)	$	8,570	$	17,918	$	(5,651	)	$	12,267
	Customer relationships		8			45,590		(8,792	)		36,798		45,590		(3,074	)		42,516
	Non-compete		2			384		(350	)		34		540		(131	)		409
	Tradename		5			3,000		(1,002	)		1,998		3,000		(440	)		2,560
	Patents		5			3,036		(953	)		2,083		2,170		(779	)		1,391
	Trademarks		10			669		(297	)		372		598		(251	)		347
	Total amortizable intangible assets					69,442		(19,587	)		49,855		69,816		(10,326	)		59,490
	IPR&D					370		—			370		1,910		—			1,910
	Total intangible assets				$	69,812	$	(19,587	)	$	50,225	$	71,726	$	(10,326	)	$	61,400
	-1
	Includes write-downs of $2,304 for existing technology, $156 for non-compete, and $360 for IPR&D, which are reflected within operating expenses in the consolidated statement of operations for the year ended December 31, 2013.
Summary of amortization of intangibles	'
		For the Years Ended
		December 31,
		2013			2012		2011
	Cost of revenue(1)	$	8,848		$	4,151	$	731
	Operating expenses		1,001			641		641
	Total amortization of intangible assets	$	9,849		$	4,792	$	1,372
	-1
	Includes amortization of $588 for the year ended December 31, 2013 associated with certain service arrangements classified as other assets on the consolidated balance sheet.
Schedule of expected future amortization of intangibles	'
	Years Ending December 31,	Estimated
		Amortization
		Expense
	2014	$	9,047
	2015		8,996
	2016		8,293
	2017		7,932
	2018		6,806
	2019 and thereafter		8,781
	Total	$	49,855

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2013
Accrued Expenses	'
Schedule of accrued expenses	'
		As of December 31,
		2013		2012
	Accrued payroll and related benefits	$	9,073	$	9,810
	Contingent consideration(1)		400		2,200
	Other		2,669		3,851
	Total accrued expenses	$	12,142	$	15,861
	-1
	For additional information, refer to Notes 4, 6, and 10, "Fair Value Measurements", "Business Combinations", and "Commitments and Contingencies", respectively.

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies	'
Schedule of minimum future rental payments under non-cancelable operating leases, net of sublease income	'
	Years Ending December 31,
	2014	$	2,923
	2015		2,273
	2016		1,759
	2017		810
	2018		498
	2019 and thereafter		1,228
		$	9,491

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Taxes	'
Schedule of U.S. and foreign income (loss) before income taxes and details of the provision (benefit) for income taxes	'
		For the Years Ended
		December 31,
		2013			2012			2011
	U.S.	$	(18,019	)	$	(22,498	)	$	7,667
	Foreign		25,140			14,265			22,263
	Income (loss) before income taxes	$	7,121		$	(8,233	)	$	29,930
	Current:
	Federal	$	(1,135	)	$	(2,289	)	$	610
	State		19			(1,080	)		179
	Foreign		7,331			5,642			7,999
	Total current		6,215			2,273			8,788
	Deferred:
	Federal		(13,301	)		2,974			2,435
	State		(1,133	)		971			724
	Foreign		(415	)		1,447			(286	)
	Total deferred		(14,849	)		5,392			2,873
	Provision (benefit) for income taxes	$	(8,634	)	$	7,665		$	11,661
Schedule of components of temporary differences that gave rise to deferred income tax	'
		As of December 31,
		2013			2012(1)
	Deferred tax assets:
	Accrued revenues	$	1,496		$	1,283
	Net operating loss carryforwards		5,364			6,028
	Credit carryforwards, net of unrecognized tax benefits		13,800			11,706
	Depreciation and amortization		1,737			1,173
	Stock-based compensation		8,026			7,506
	Accruals, reserves and other		1,236			1,704
	Acquired intangibles		2,551			1,180
	Total gross deferred tax assets		34,210			30,580
	Valuation allowance		(579	)		(8,702	)
	Total deferred tax assets		33,631			21,878
	Deferred tax liabilities:
	Acquired intangible		16,130			18,807
	Prepaid expenses		47			64
	Undistributed earnings of foreign subsidiary		—			404
	Total deferred tax liabilities		16,177			19,275
	Deferred tax assets, net	$	17,454		$	2,603
	Current deferred tax assets, net	$	5,787		$	1,998
	Non-current deferred tax assets, net		11,667			605
	Deferred tax assets, net	$	17,454		$	2,603
	-1
	Includes measurement period adjustments applied retrospectively, including a $3,534 decrease to the valuation allowance and net operating loss carryforwards.
Schedule of reconciliation of statutory income tax rate to effective tax rate	'
		For the Years Ended
		December 31,
		2013			2012			2011
	Statutory federal rate		35	%		35	%		35	%
	State income taxes, net		(5.5	)		(2.1	)		1.8
	Effect of varying foreign rates		(96.5	)		50.1			(17.8	)
	Foreign withholding taxes		78.8			(60.2	)		18.3
	Unremitted earnings of foreign subsidiary		(3.4	)		(9.7	)		—
	Non-deductible transaction costs		—			(13.8	)		—
	Non-deductible meals and entertainment		1			(0.6	)		0.1
	Stock-based compensation expense		7			(7.6	)		1.5
	Research and development credits		(11.9	)		—			(1.0	)
	Unrecognized tax benefits		8			38.3			0.9
	Tax audit settlements		(11.6	)		(108.9	)		—
	Deferred tax asset adjustment		(12.0	)		3.6			—
	Valuation allowance		(111.2	)		(16.4	)		—
	Other		1.1			(0.8	)		0.2
	Effective tax rate		(121.2	)%		(93.1	)%		39	%
Schedule of reconciliation of the unrecognized tax benefits	'
		Unrecognized
		Tax Benefits
	Balance at January 1, 2011	$	7,205
	Additions for tax positions of prior years		240
	Additions for tax positions of the current year		1,277
	Settlements		(1,459	)
	Balance at December 31, 2011		7,263
	Additions for tax positions of prior years		6,868
	Additions for tax positions of the current year		427
	Settlements		(3,501	)
	Balance at December 31, 2012		11,057
	Additions for tax positions of prior years		100
	Additions for tax positions of the current year		804
	Settlements		(2,135	)
	Lapse of applicable statutes		(246	)
	Balance at December 31, 2013	$	9,580

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Stock-Based Compensation	'
Schedule of the Company's stock-based compensation costs and related income tax benefits	'
		For the Years Ended
		December 31,
		2013			2012			2011
	Stock-based compensation cost:
	Cost of revenue	$	—		$	—		$	12
	Selling, general and administrative		8,872			8,940			7,622
	Research and development		2,855			2,376			1,649
	Total stock-based compensation cost	$	11,727		$	11,316		$	9,283
	Income tax benefit	$	4,779		$	4,611		$	3,783
Schedule of weighted average key assumptions used to estimate fair value of options granted	'
		Years Ended
		December 31,
		2013			2012			2011
	Risk free interest rate		0.7	%		0.6	%		1.7	%
	Expected lives (years)		4.2			4			3.9
	Dividend yield		0	%		0	%		0	%
	Expected volatility		44	%		49	%		49	%
Summary of stock option activity	'
		Number of			Weighted-			Weighted-			Aggregate
		options			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Life (Years)
	Options outstanding at December 31, 2012		2,691		$	25.86
	Granted		724			20.22
	Exercised		(27	)		15.4
	Expired or cancelled		(69	)		27.54
	Options outstanding at December 31, 2013		3,319		$	24.68			6.5		$	7,999
	Options exercisable at December 31, 2013		1,833		$	24.24			4.9		$	5,171
Summary of restricted stock activity	'
		Number of			Weighted-
		Shares			Average
					Grant-Date
					Fair Value
	Unvested stock at December 31, 2012		382		$	28.12
	Granted		91			19.95
	Vested		(142	)		27.26
	Forfeited		(25	)		27.06
	Unvested stock at December 31, 2013		306		$	26.14
Schedule of weighted average key assumptions used to estimate fair value of shares granted	'
		Years Ended
		December 31,
		2013			2012			2011
	Risk free interest rate		0.2	%		0.2	%		0.1	%
	Expected lives (years)		1.2			0.7			0.7
	Dividend yield		0	%		0	%		0	%
	Expected volatility		52	%		61	%		45	%

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment and Geographic Information	'
Schedule of revenue by geographical area, based on the customer's country of domicile	'
		For the Years Ended December 31,
		2013		2012		2011
	U.S.	$	12,998	$	11,693	$	10,838
	South Korea		45,051		27,110		22,549
	Japan		42,256		41,203		43,814
	Other international		24,843		20,643		19,721
	Total international		112,150		88,956		86,084
	Total revenues	$	125,148	$	100,649	$	96,922
Schedule of long-lived tangible assets, net of accumulated depreciation, by geographic region	'
		As of December 31,
		2013		2012
	U.S.	$	27,979	$	30,894
	International		2,137		2,431
	Total long-lived tangible assets, net of accumulated depreciation	$	30,116	$	33,325

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Net Income (Loss) Per Share	'
Computation of basic and diluted net income (loss) per common share	'
		For the Years Ended December 31,
		2013		2012			2011
	Numerator:
	Net income (loss)	$	15,755	$	(15,898	)	$	18,269
	Denominator:
	Weighted average shares outstanding		18,097		17,466			16,982
	Effect of dilutive securities:
	Common stock options		153		—			494
	Restricted stock		67		—			97
	ESPP		17		—			2
	Diluted shares outstanding		18,334		17,466			17,575
	Basic net income (loss) per common share	$	0.87	$	(0.91	)	$	1.08
	Diluted net income (loss) per common share	$	0.86	$	(0.91	)	$	1.04
	Anti-dilutive shares excluded from the determination of diluted net income (loss) per share		3,163		2,697			442

Selected_Quarterly_Data_Unaudi1

Selected Quarterly Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Selected Quarterly Data (Unaudited)	'
Schedule of selected quarterly data (unaudited)	'
		For the Quarter Ended
		Mar. 31,			June 30,			Sep. 30,			Dec. 31,
	2013
	Revenues	$	32,728		$	27,188		$	28,159		$	37,073
	Gross profit	$	30,406		$	24,776		$	25,726		$	34,452
	Net income (loss)	$	(1,532	)	$	(2,027	)	$	1,988	-1	$	17,326	-2
	Basic earnings (loss) per share	$	(0.08	)	$	(0.11	)	$	0.11		$	0.98
	Diluted earnings (loss) per share	$	(0.08	)	$	(0.11	)	$	0.11		$	0.96
	2012(3)
	Revenues	$	26,885		$	21,754		$	22,235		$	29,775
	Gross profit	$	26,691		$	21,560		$	20,130		$	27,921
	Net income (loss)	$	4,045		$	(755	)	$	(19,086	)	$	(102	)
	Basic earnings (loss) per share	$	0.25		$	(0.05	)	$	(1.04	)	$	(0.01	)
	Diluted earnings (loss) per share	$	0.24		$	(0.05	)	$	(1.04	)	$	(0.01	)
	-1
	Includes an impairment charge of $2,820 relating to certain intangibles. For additional information, refer to Note 7, "Goodwill and Other Intangibles". Also, includes a recorded gain of $5,300 within operating expenses relating to changes in the fair value of contingent consideration. For additional information, refer to Note 4, "Fair Value Measurements".
	-2
	Includes a $7,919 tax benefit as a result of a release of the valuation allowance on U.S. federal deferred tax assets. For additional information, refer to Note 11, "Income Taxes". Also, includes a recorded gain of $700 within operating expenses relating to changes in the fair value of contingent consideration. For additional information, refer to Note 4, "Fair Value Measurements".
	-3
	During the quarter ended September 30, 2012, the Company acquired SRS and Phorus. For additional information, refer to Note 6, "Business Combinations".

The_Company_Details

The Company (Details) (USD $)	0 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jul. 09, 2003
The Company	'
Number of shares of common stock offered in the initial public offering (in shares)	4,091
Per share price of common stock offered in the initial public offering (in dollars per share)	$17

Significant_Accounting_Policie3

Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item	item	item
Revenues | Customer concentration risk	'	'	'
Concentration of business and credit risk	'	'	'
Number of customers accounted	3	2	2
Revenues | Customer concentration risk | Customer one	'	'	'
Concentration of business and credit risk	'	'	'
Concentration risk, percentage	21.00%	13.00%	16.00%
Revenues | Customer concentration risk | Customer two	'	'	'
Concentration of business and credit risk	'	'	'
Concentration risk, percentage	12.00%	11.00%	12.00%
Revenues | Customer concentration risk | Customer three	'	'	'
Concentration of business and credit risk	'	'	'
Concentration risk, percentage	12.00%	'	'
Accounts receivable | Credit Concentration Risk	'	'	'
Concentration of business and credit risk	'	'	'
Number of customers accounted	1	1	'
Accounts receivable | Credit Concentration Risk | Customer one	'	'	'
Concentration of business and credit risk	'	'	'
Concentration risk, percentage	51.00%	10.00%	'

Significant_Accounting_Policie4

Significant Accounting Policies (Details 2)	12 Months Ended
	Dec. 31, 2013
Machinery and equipment | Minimum	'
Property and equipment	'
Useful lives	'2 years
Machinery and equipment | Maximum	'
Property and equipment	'
Useful lives	'5 years
Software | Minimum	'
Property and equipment	'
Useful lives	'2 years
Software | Maximum	'
Property and equipment	'
Useful lives	'7 years
Office furniture and fixtures | Minimum	'
Property and equipment	'
Useful lives	'3 years
Office furniture and fixtures | Maximum	'
Property and equipment	'
Useful lives	'7 years
Building and improvements | Maximum	'
Property and equipment	'
Useful lives	'35 years

Significant_Accounting_Policie5

Significant Accounting Policies (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item
Significant Accounting Policies	'	'	'
Number of reportable segments	1	'	'
Number of operating segments	1	'	'
Long-Lived Assets	'	'	'
Impairment of long-lived assets	$0	'	'
Revenue Recognition	'	'	'
Minimum manufacturing information reporting period	'30 days	'	'
Maximum manufacturing information reporting period	'60 days	'	'
Licensing agreements revenue recognition period lag	'3 months	'	'
Withholding taxes related to licensing revenue	5,610	4,970	5,537
Advertising Expenses	'	'	'
Advertising and promotional cost	$4,408	$3,584	$2,957
Patents	'	'	'
Long-Lived Assets	'	'	'
Estimated useful lives	'5 years	'	'
Trademarks	'	'	'
Long-Lived Assets	'	'	'
Estimated useful lives	'10 years	'	'

Cash_Cash_Equivalents_and_Inve2

Cash, Cash Equivalents and Investments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Cash, Cash Equivalents and Investments	'	'
Cash equivalents	$66,025	$57,831
Total short-term investments	5,004	14,214
Total long-term investments	'	5,000
Cash	'	'
Cash, Cash Equivalents and Investments	'	'
Cash	26,374	17,433
Money market accounts	'	'
Cash, Cash Equivalents and Investments	'	'
Cash	39,651	40,398
Available-for-sale securities: | Certificates of deposit	'	'
Cash, Cash Equivalents and Investments	'	'
Total short-term investments	'	4,189
Available-for-sale securities: | U.S. government and agency securities	'	'
Cash, Cash Equivalents and Investments	'	'
Total short-term investments	5,004	10,025
Total long-term investments	'	$5,000

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)

3 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jul. 05, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Oct. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Phorus

Phorus

Phorus

Phorus

Phorus

Recurring basis

Recurring basis

Recurring basis

Recurring basis

Recurring basis

Recurring basis

Recurring basis

Recurring basis

Recurring basis

Recurring basis

item

Total

Total

Total

Total

Total

Significant Other Observable Inputs (Level 2)

Significant Other Observable Inputs (Level 2)

Significant Other Observable Inputs (Level 2)

Significant Unobservable Inputs (Level 3)

Significant Unobservable Inputs (Level 3)

Certificates of deposit

U.S. government and agency securities

U.S. government and agency securities

Certificates of deposit

U.S. government and agency securities

U.S. government and agency securities

Fair Value Measurements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of scenarios followed to determine fair value of contingent consideration

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

Period of revenue milestones

'

'

'

'

'3 years 6 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate, scenario one (as a percent)

'

'

'

'

'

'

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate, scenario two (as a percent)

'

'

'

'

'

'

13.00%

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate (as a percent)

'

'

'

'

'

17.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain recognized on change in fair value of contingent consideration

$700

$5,300

$6,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration due and payable at the end of 2013

'

'

'

'

'

'

'

'

500

'

'

'

'

'

'

'

'

'

'

Contingent consideration due and payable at the end of 2014

'

'

'

'

'

'

'

'

500

'

'

'

'

'

'

'

'

'

'

Contingent consideration due and payable at the end of 2015

'

'

'

'

'

'

'

'

1,000

'

'

'

'

'

'

'

'

'

'

Payment of contingent consideration

'

'

'

'

'

500

'

'

'

'

'

'

'

'

'

'

'

500

'

Additional consideration payable subject to the achievement of certain milestones

'

'

'

'

10,000

'

'

'

2,000

'

'

'

'

'

'

'

'

'

'

Available-for-sale securities

'

'

'

'

'

'

'

'

'

'

'

4,189

5,004

15,025

4,189

5,004

15,025

'

'

Contingent consideration

'

'

'

7,500

'

1,000

'

1,000

'

-1,000

-7,500

'

'

'

'

'

'

-1,000

-7,500

Amount of contingent consideration classified in accrued expenses

400

'

400

2,200

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of contingent consideration classified in other long-term liabilities

600

'

600

5,300

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Changes in the fair value of items measured on a recurring basis that used significant unobservable inputs (Level 3)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at the beginning of the period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-7,500

'

Payment of contingent consideration

'

'

'

'

'

500

'

'

'

'

'

'

'

'

'

'

'

500

'

Change in fair value of contingent consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,000

'

Balance at the end of the period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

($1,000)

'

Property_and_Equipment_Details

Property and Equipment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property and equipment	'	'	'
Property and equipment, gross	$52,004	$49,993	'
Less: Accumulated depreciation	-21,888	-16,668	'
Property and equipment, net	30,116	33,325	'
Depreciation expense	5,550	4,833	3,965
Land	'	'	'
Property and equipment	'	'	'
Property and equipment, gross	6,600	6,600	'
Building and improvements	'	'	'
Property and equipment	'	'	'
Property and equipment, gross	21,433	21,342	'
Machinery and equipment	'	'	'
Property and equipment	'	'	'
Property and equipment, gross	5,264	4,629	'
Office furniture and fixtures	'	'	'
Property and equipment	'	'	'
Property and equipment, gross	7,560	6,824	'
Leasehold improvements	'	'	'
Property and equipment	'	'	'
Property and equipment, gross	4,409	4,030	'
Software	'	'	'
Property and equipment	'	'	'
Property and equipment, gross	$6,738	$6,568	'

Business_Combinations_Details

Business Combinations (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2011

Jul. 20, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jul. 05, 2012

Dec. 31, 2013

Dec. 31, 2012

Oct. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

SRS

SRS

SRS

SRS

SRS

SRS

SRS

SRS

Phorus

Phorus

Phorus

Phorus

Selling, general and administrative

Selling, general and administrative

Research and development

Research and development

Measurement period adjustments

IPR&D

Customer relationships

Developed technology

Trademarks/tradenames

SRS

SRS

SRS

SRS

Business Combinations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate consideration

'

'

'

$124,785

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated Fair Value of final purchase price allocation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

'

'

'

'

23,298

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Short-term investments

'

'

'

'

8,529

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts receivable

'

'

'

'

9,835

'

2,550

'

'

'

'

'

'

'

'

'

'

'

'

Prepaid expenses and other current assets

'

'

'

'

1,628

'

303

'

'

'

'

'

'

'

'

'

'

'

'

Income taxes receivable

'

'

'

'

200

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property and equipment

'

'

'

'

1,027

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

48,418

48,418

1,257

'

41,708

'

-2,896

'

'

'

'

'

'

'

'

'

'

'

'

Total identifiable intangible assets

'

'

'

'

56,450

'

'

1,180

44,540

7,920

2,810

'

'

'

'

'

'

'

'

Deferred tax assets

'

'

'

'

'

'

-25

'

'

'

'

'

'

'

'

'

'

'

'

Deferred tax assets

'

'

'

'

5,882

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term investments

'

'

'

'

249

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts payable

'

'

'

'

-476

'

-25

'

'

'

'

'

'

'

'

'

'

'

'

Accrued expenses

'

'

'

'

-2,279

'

93

'

'

'

'

'

'

'

'

'

'

'

'

Deferred revenue

'

'

'

'

-506

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred tax liabilities

'

'

'

'

-19,978

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other long-term liabilities

'

'

'

'

-782

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total purchase price

'

'

'

'

124,785

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Estimated Useful Life

'

'

'

'

'

'

'

'

'8 years

'6 years

'5 years

'

'

'

'

'

'

'

'

Purchase accounting adjustments

-1,117

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

Additional information

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total acquisition and integration related costs

'

'

'

'

1,558

15,510

'

'

'

'

'

'

8

193

'

1,520

13,276

38

2,234

Cash

'

'

'

'

'

'

'

'

'

'

'

3,000

'

'

'

'

'

'

'

Holdback for potential indemnification matters

'

'

'

'

'

'

'

'

'

'

'

300

'

'

'

'

'

'

'

Additional consideration payable subject to the achievement of certain milestones

'

'

'

'

'

'

'

'

'

'

'

$10,000

'

'

$2,000

'

'

'

'

Goodwill_and_Other_Intangibles2

Goodwill and Other Intangibles (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Other Intangibles	'	'	'
Impairment of goodwill	$0	'	'
Changes in the carrying amount of goodwill	'	'	'
Balance at the beginning of the period	48,418	1,257	'
Increase in goodwill related to acquisitions	'	51,174	'
Preliminary purchase price allocation adjustments, net	'	-1,117	'
Measurement period adjustments applied retrospectively, net	'	-2,896	'
Balance at the end of the period	48,418	48,418	1,257
Summary of acquired intangible and other intangible assets by category	'	'	'
Impairment charge for IPR&D	360	'	'
Gross Amount	69,442	69,816	'
Accumulated Amortization	-19,587	-10,326	'
Net Carrying Amount	49,855	59,490	'
IPR&D-Gross and Net	370	1,910	'
Gross amount of total intangible assets	69,812	71,726	'
Intangible assets, net	50,225	61,400	'
Total amortization of intangible assets	9,849	4,792	1,372
Future amortization of intangibles	'	'	'
2014	9,047	'	'
2015	8,996	'	'
2016	8,293	'	'
2017	7,932	'	'
2018	6,806	'	'
2019 and thereafter	8,781	'	'
Net Carrying Amount	49,855	59,490	'
Phorus	'	'	'
Changes in the carrying amount of goodwill	'	'	'
Preliminary purchase price allocation adjustments, net	0	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Impairment charge	2,460	'	'
Impairment charge for IPR&D	360	'	'
Existing technology	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Impairment charge	2,304	'	'
Weighted Average Life	'6 years	'	'
Gross Amount	16,763	17,918	'
Accumulated Amortization	-8,193	-5,651	'
Net Carrying Amount	8,570	12,267	'
Future amortization of intangibles	'	'	'
Net Carrying Amount	8,570	12,267	'
Existing technology | Phorus	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Impairment charge	2,304	'	'
Customer relationships	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Weighted Average Life	'8 years	'	'
Gross Amount	45,590	45,590	'
Accumulated Amortization	-8,792	-3,074	'
Net Carrying Amount	36,798	42,516	'
Future amortization of intangibles	'	'	'
Net Carrying Amount	36,798	42,516	'
Non-compete	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Impairment charge	156	'	'
Weighted Average Life	'2 years	'	'
Gross Amount	384	540	'
Accumulated Amortization	-350	-131	'
Net Carrying Amount	34	409	'
Future amortization of intangibles	'	'	'
Net Carrying Amount	34	409	'
Non-compete | Phorus	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Impairment charge	156	'	'
Tradenames	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Weighted Average Life	'5 years	'	'
Gross Amount	3,000	3,000	'
Accumulated Amortization	-1,002	-440	'
Net Carrying Amount	1,998	2,560	'
Future amortization of intangibles	'	'	'
Net Carrying Amount	1,998	2,560	'
Patents	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Weighted Average Life	'5 years	'	'
Gross Amount	3,036	2,170	'
Accumulated Amortization	-953	-779	'
Net Carrying Amount	2,083	1,391	'
Future amortization of intangibles	'	'	'
Net Carrying Amount	2,083	1,391	'
Trademarks	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Weighted Average Life	'10 years	'	'
Gross Amount	669	598	'
Accumulated Amortization	-297	-251	'
Net Carrying Amount	372	347	'
Future amortization of intangibles	'	'	'
Net Carrying Amount	372	347	'
Cost of revenue	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Total amortization of intangible assets	8,848	4,151	731
Amortization associated with certain service arrangements	588	'	'
Operating expenses	'	'	'
Summary of acquired intangible and other intangible assets by category	'	'	'
Total amortization of intangible assets	$1,001	$641	$641

Accrued_Expenses_Details

Accrued Expenses (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accrued Expenses	'	'
Accrued payroll and related benefits	$9,073	$9,810
Contingent consideration	400	2,200
Other	2,669	3,851
Total accrued expenses	$12,142	$15,861

Longterm_Debt_Details

Long-term Debt (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Jul. 18, 2012
	item
Revolver	'	'	'
Long-term debt	'	'	'
Maximum borrowing capacity	'	'	$30,000
Option to increase the revolver subject to certain conditions	'	'	20,000
Amount outstanding	30,000	30,000	'
Annual commitment fee (as a percent)	0.25%	'	'
Number of rolling quarters	4	'	'
Debt compliance, minimum adjusted EBITDA required for four rolling quarters	32,000	'	'
Debt compliance maximum leverage ratio	1.5	'	'
Debt compliance minimum liquidity requirement	30,000	'	'
Maximum security interest granted to lender in the stock of the Company's current and future foreign subsidiaries (as a percent)	65.00%	'	'
Revolver | LIBOR	'	'	'
Long-term debt	'	'	'
Reference rate	'LIBOR	'	'
Basis points added to reference rate (as a percent)	1.00%	'	'
Revolver | Federal Funds Rate	'	'	'
Long-term debt	'	'	'
Reference rate	'Federal Funds Rate	'	'
Basis points added to reference rate (as a percent)	0.50%	'	'
Standby and commercial letters of credit	'	'	'
Long-term debt	'	'	'
Maximum borrowing capacity	'	'	$5,000

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Oct. 31, 2013
				Phorus	Phorus
Minimum future rental payments under non-cancelable operating leases	'	'	'	'	'
2014	$2,923	'	'	'	'
2015	2,273	'	'	'	'
2016	1,759	'	'	'	'
2017	810	'	'	'	'
2018	498	'	'	'	'
2019 and thereafter	1,228	'	'	'	'
Total	9,491	'	'	'	'
Rent expense	2,270	1,874	1,359	'	'
Commitments and Contingencies	'	'	'	'	'
Additional consideration payable subject to the achievement of certain milestones	7,545	'	'	'	'
Period for the payment of additional consideration subject to the achievement of certain milestones	'3 years	'	'	'	'
Contingent consideration due and payable at the end of 2014	'	'	'	'	500
Contingent consideration due and payable at the end of 2015	'	'	'	'	1,000
Contingent consideration	'	$7,500	'	$1,000	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income (loss) before income taxes	'	'	'
U.S.	($18,019)	($22,498)	$7,667
Foreign	25,140	14,265	22,263
Income (loss) before income taxes	7,121	-8,233	29,930
Current:	'	'	'
Federal	-1,135	-2,289	610
State	19	-1,080	179
Foreign	7,331	5,642	7,999
Total current	6,215	2,273	8,788
Deferred:	'	'	'
Federal	-13,301	2,974	2,435
State	-1,133	971	724
Foreign	-415	1,447	-286
Total deferred	-14,849	5,392	2,873
Provision (benefit) for income taxes	-8,634	7,665	11,661
Deferred tax assets:	'	'	'
Accrued revenues	1,496	1,283	'
Net operating loss carryforwards	5,364	6,028	'
Credit carryforwards, net of unrecognized tax benefits	13,800	11,706	'
Depreciation and amortization	1,737	1,173	'
Stock-based compensation	8,026	7,506	'
Accruals, reserves and other	1,236	1,704	'
Acquired intangibles	2,551	1,180	'
Total gross deferred tax assets	34,210	30,580	'
Valuation allowance	-579	-8,702	'
Total deferred tax assets	33,631	21,878	'
Deferred tax liabilities:	'	'	'
Acquired intangibles	16,130	18,807	'
Prepaid expenses	47	64	'
Undistributed earnings of foreign subsidiary	'	404	'
Total deferred tax liabilities	16,177	19,275	'
Deferred tax assets, net	17,454	2,603	'
Current deferred tax assets, net	5,787	1,998	'
Non-current deferred tax assets, net	11,667	605	'
Deferred tax assets, net	17,454	2,603	'
Decrease in valuation allowance	'	3,534	'
Decrease in net operating loss carryforwards	'	$3,534	'

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes	'	'	'	'
Increase in tax benefit as a result of release of U.S. federal valuation allowance against net U.S. federal deferred tax assets	$7,919	'	'	'
Deferred tax liability related to intellectual property rights	0	0	'	'
Income Taxes	'	'	'	'
Operating loss carryforwards	29,943	29,943	'	'
Stock-based compensation deductions included in tax loss carryforwards	1,465	1,465	'	'
Compensation expense	'	11,727	11,316	9,283
Reconciliation of statutory income tax rate to effective tax rate	'	'	'	'
Statutory federal rate (as a percent)	'	35.00%	35.00%	35.00%
State income taxes, net (as a percent)	'	-5.50%	-2.10%	1.80%
Effect of varying foreign rates (as a percent)	'	-96.50%	50.00%	-17.80%
Foreign withholding taxes (as a percent)	'	78.80%	-60.20%	18.30%
Unremitted earnings of foreign subsidiary (as a percent)	'	-3.40%	-9.70%	'
Non-deductible transaction costs (as a percent)	'	'	-13.80%	'
Non-deductible meals and entertainment (as a percent)	'	1.00%	-0.60%	0.10%
Stock - based compensation expense (as a percent)	'	7.00%	-7.60%	1.50%
Research and development credits (as a percent)	'	-11.90%	'	-1.00%
Unrecognized tax benefits (as a percent)	'	8.00%	38.30%	0.90%
Tax audit settlements (as a percent)	'	-11.60%	-108.90%	'
Deferred tax asset adjustment (as a percent)	'	-12.00%	3.60%	'
Valuation allowance (as a percent)	'	-111.20%	-16.40%	'
Other (as a percent)	'	1.10%	-0.80%	0.20%
Effective tax rate (as a percent)	'	-121.20%	-93.10%	39.00%
Undistributed earnings of foreign subsidiary	'	'	404	'
Undistributed earnings of foreign subsidiaries	58,756	58,756	'	'
Deferred tax liability	16,177	16,177	19,275	'
Uncertain tax positions recorded in long-term deferred tax assets and other long-term liabilities	9,701	9,701	11,279	'
Accrued interest	121	121	222	'
Reconciliation of the unrecognized tax benefits	'	'	'	'
Balance at the beginning of the period	'	11,057	7,263	7,205
Additions for tax positions of prior years	'	100	6,868	240
Additions for tax positions of the current year	'	804	427	1,277
Settlements	'	-2,135	-3,501	-1,459
Lapse of applicable statutes	'	-246	'	'
Balance at the end of the period	9,580	9,580	11,057	7,263
R&D and other credits	'	'	'	'
Income Taxes	'	'	'	'
Tax credit carryforwards	6,043	6,043	'	'
Federal	'	'	'	'
Income Taxes	'	'	'	'
Operating loss carryforwards	14,574	14,574	'	'
State	'	'	'	'
Income Taxes	'	'	'	'
Operating loss carryforwards	15,369	15,369	'	'
Foreign	'	'	'	'
Income Taxes	'	'	'	'
Tax credit carryforwards	$15,745	$15,745	'	'

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-based compensation cost	'	'	'
Total stock-based compensation cost	$11,727	$11,316	$9,283
Income tax benefit	4,779	4,611	3,783
Cost of revenue	'	'	'
Stock-based compensation cost	'	'	'
Total stock-based compensation cost	'	'	12
Selling, general and administrative	'	'	'
Stock-based compensation cost	'	'	'
Total stock-based compensation cost	8,872	8,940	7,622
Research and development	'	'	'
Stock-based compensation cost	'	'	'
Total stock-based compensation cost	$2,855	$2,376	$1,649

StockBased_Compensation_Detail1

Stock-Based Compensation (Details 2) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 13, 2012
	item
Weighted average key assumptions	'	'	'	'
Compensation expense	$11,727	$11,316	$9,283	'
Stock Option	'	'	'	'
Weighted average key assumptions	'	'	'	'
Risk free interest rate (as a percent)	0.70%	0.60%	1.70%	'
Expected lives	'4 years 2 months 12 days	'4 years	'3 years 10 months 24 days	'
Dividend yield (as a percent)	0.00%	0.00%	0.00%	'
Expected volatility (as a percent)	44.00%	49.00%	49.00%	'
Weighted-average grant-date fair value of options granted (in dollars per share)	$7.24	$10.25	$17.68	'
Compensation expense	5,507	5,153	4,004	'
Number of options	'	'	'	'
Options outstanding at the beginning of the period (in shares)	2,691,000	'	'	'
Granted (in shares)	724,000	924,000	299,000	'
Exercised (in shares)	-27,000	'	'	'
Expired or cancelled (in shares)	-69,000	'	'	'
Options outstanding at the end of the period (in shares)	3,319,000	2,691,000	'	'
Options exercisable at the end of the period (in shares)	1,833,000	'	'	'
Weighted-Average Exercise Price	'	'	'	'
Options outstanding at the beginning of the period (in dollars per share)	$25.86	'	'	'
Granted (in dollars per share)	$20.22	'	'	'
Exercised (in dollars per share)	$15.40	'	'	'
Expired or cancelled (in dollars per share)	$27.54	'	'	'
Options outstanding at the end of the period (in dollars per share)	$24.68	$25.86	'	'
Options exercisable at the end of the period (in dollars per share)	$24.24	'	'	'
Weighted-Average Remaining Contractual Life	'	'	'	'
Options outstanding at the end of the period	'6 years 6 months	'	'	'
Options exercisable at the end of the period	'4 years 10 months 24 days	'	'	'
Aggregate Intrinsic Value	'	'	'	'
Options outstanding at the end of the period (in dollars)	7,999	'	'	'
Options exercisable at the end of the period (in dollars)	5,171	'	'	'
Additional disclosure	'	'	'	'
Intrinsic value of options exercised (in dollars)	152	1,399	3,911	'
Remaining unearned compensation related to unvested stock options	9,804	'	'	'
Period over which unrecognized compensation expense is expected to be recognized	'1 year 7 months 6 days	'	'	'
Restricted stock	'	'	'	'
Weighted average key assumptions	'	'	'	'
Compensation expense	3,529	3,669	3,272	'
Additional disclosure	'	'	'	'
Remaining unearned compensation related to restricted stock	5,245	'	'	'
Period over which unrecognized compensation expense is expected to be recognized	'1 year 6 months	'	'	'
Number of Shares	'	'	'	'
Unvested stock at the beginning of the period (in shares)	382,000	'	'	'
Granted (in shares)	91,000	'	'	'
Vested (in shares)	-142,000	'	'	'
Forfeited (in shares)	-25,000	'	'	'
Unvested stock at the end of the period (in shares)	306,000	382,000	'	'
Weighted-Average Grant-Date Fair Value	'	'	'	'
Unvested stock at the beginning of the period (in dollars per share)	$28.12	'	'	'
Granted (in dollars per share)	$19.95	'	'	'
Vested (in dollars per share)	$27.26	'	'	'
Forfeited (in dollars per share)	$27.06	'	'	'
Unvested stock at the end of the period (in dollars per share)	$26.14	$28.12	'	'
1997 and 2002 Plan | Stock Option	'	'	'	'
Stock-Based Compensation	'	'	'	'
Exercisable period	'4 years	'	'	'
Expiration period	'10 years	'	'	'
Number of shares authorized for issuance	2,071,000	'	'	'
2003 Plan	'	'	'	'
Stock-Based Compensation	'	'	'	'
Additional share authorized for issuance	929,000	'	'	'
Annual increase in common stock reserved for issuance, as a percentage of common stock issued and outstanding in the immediately preceding year if the lesser of three alternatives	4.00%	'	'	'
Annual fixed increase in shares of common stock reserved for issuance if the lesser of three alternatives	1,500,000	'	'	'
2012 Plan | Stock Option	'	'	'	'
Stock-Based Compensation	'	'	'	'
Number of shares authorized for issuance	1,500,000	'	'	'
2006 Plan acquired from SRS	'	'	'	'
Stock-Based Compensation	'	'	'	'
Number of shares authorized for issuance	234,000	'	'	'
2003 Employee stock purchase plan	'	'	'	'
Stock-Based Compensation	'	'	'	'
Number of shares authorized for issuance	500,000	'	'	'
Annual increase in common stock reserved for issuance, as a percentage of common stock issued and outstanding in the immediately preceding year if the lesser of three alternatives	1.00%	'	'	'
Annual fixed increase in shares of common stock reserved for issuance if the lesser of three alternatives	500,000	'	'	'
2013 Employee stock purchase plan	'	'	'	'
Stock-Based Compensation	'	'	'	'
Number of shares authorized for issuance	'	'	'	750,000
Authorized maximum payroll deduction percentage for common stock purchases	15.00%	'	'	'
Number of purchase period dates	2	'	'	'
Offering period duration	'24 months	'	'	'
Purchase periods intervals	'6 months	'	'	'
Purchase price as a percentage of market price of common stock	85.00%	'	'	'
ESPP look-back period	'2 years	'	'	'
Maximum fair value of stock issued to eligible employee in any calendar year	25	'	'	'
Purchase of shares on any single purchase date by eligible employee	2,500	'	'	'
Weighted average key assumptions	'	'	'	'
Risk free interest rate (as a percent)	0.20%	0.20%	0.10%	'
Expected lives	'1 year 2 months 12 days	'8 months 12 days	'8 months 12 days	'
Dividend yield (as a percent)	0.00%	0.00%	0.00%	'
Expected volatility (as a percent)	52.00%	61.00%	45.00%	'
Compensation expense	$871	$668	$498	'

StockBased_Compensation_Detail2

Stock-Based Compensation (Details 3) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Feb. 27, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-Based Compensation	'	'	'	'
Compensation expenses	'	$11,727	$11,316	$9,283
2003 Stock Plan | Market stock units	'	'	'	'
Stock-Based Compensation	'	'	'	'
Performance period for vesting of shares	'	'3 years	'	'
Adjusted percentage for inflation to determine vesting threshold	'	15.00%	'	'
Percentage over the performance period used to determine vesting threshold	'	20.00%	'	'
Performance percentage of the entity over return of the NASDAQ required to vest baseline number of Units	'	20.00%	'	'
Vesting ratio for each percentage point that entity's performance is above 20% greater than NASDAQ performance	'	2.5	'	'
Maximum number of Units that may vest equal to percentage of each individual baseline number of Unit	'	200.00%	'	'
Reduction ratio in vesting of number of baseline units for the first five percentage points if the Company's performance is less than 20% greater than the performance of the NASDAQ	'	5	'	'
Reduction ratio in vesting of number of baseline units for the first specific percentage points if the Company's performance is less than 20% greater than the performance of the NASDAQ	'	5.00%	'	'
Reduction ratio in vesting of number of baseline units for the first 5% percentage points if the Company's performance is less than specific percentage but greater than the performance of the NASDAQ	'	20.00%	'	'
Reduction ratio in vesting of number of baseline units for the next five percentage points if the Company's performance is less than 15% greater than the performance of the NASDAQ	'	15	'	'
Reduction ratio in vesting of number of baseline units for the next specific percentage points if the Company's performance is less than 15% greater than the performance of the NASDAQ	'	5.00%	'	'
Reduction ratio in vesting of number of baseline units for the next 5% percentage points if the Company's performance is less than specific percentage but greater than the performance of the NASDAQ	'	15.00%	'	'
Number of units granted (in shares)	199	'	'	'
Aggregate grant-date fair value	5,287	'	'	'
Number of units forfeited (in shares)	'	'	5	'
Vested units (in shares)	'	194	'	'
Compensation expenses	'	$1,820	$1,826	$1,509
Expired (in shares)	'	194	'	'
2003 Stock Plan | Market stock units | Minimum	'	'	'	'
Stock-Based Compensation	'	'	'	'
Performance percentage of the entity over return of the NASDAQ required to vest number of Units	'	10.00%	'	'
Unvested unit (in shares)	'	0	'	'
2003 Stock Plan | Market stock units | Maximum	'	'	'	'
Stock-Based Compensation	'	'	'	'
Performance percentage of the entity over return of the NASDAQ required to vest number of Units	'	20.00%	'	'

Defined_Contribution_Plan_Deta

Defined Contribution Plan (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Contribution Plan	'	'	'
Employee contribution limit per calendar year, as a percentage of compensation	100.00%	'	'
The limit of annual employee contributions to the plan per calendar year, as a percentage of compensation, if defined as a highly compensated participant	20.00%	'	'
Employer match of employee contributions of the first 4% of eligible compensation (as a percent)	100.00%	'	'
Percentage of eligible compensation, matched by employer	4.00%	'	'
Percentage of eligible compensation, matched by employer	6.00%	'	'
Matching contribution made by the company during the year	$859	$656	$577

Stock_Repurchase_Plans_Details

Stock Repurchase Plans (Details) (USD $)	3 Months Ended	23 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Feb. 22, 2012	31-May-11
Stock Repurchase Plans	'	'	'	'
Number of shares of common stock authorized to be repurchased	'	2,000	2,000	1,000
Aggregate value of shares repurchased	$32,299	$39,374	'	'

Segment_and_Geographic_Informa2

Segment and Geographic Information (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Geographic information	'	'	'	'	'	'	'	'	'	'	'
Revenue	$37,073	$28,159	$27,188	$32,728	$29,775	$22,235	$21,754	$26,885	$125,148	$100,649	$96,922
Long-lived tangible assets, net	30,116	'	'	'	33,325	'	'	'	30,116	33,325	'
United States	'	'	'	'	'	'	'	'	'	'	'
Geographic information	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	12,998	11,693	10,838
Long-lived tangible assets, net	27,979	'	'	'	30,894	'	'	'	27,979	30,894	'
South Korea	'	'	'	'	'	'	'	'	'	'	'
Geographic information	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	45,051	27,110	22,549
Japan	'	'	'	'	'	'	'	'	'	'	'
Geographic information	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	42,256	41,203	43,814
Other international	'	'	'	'	'	'	'	'	'	'	'
Geographic information	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	24,843	20,643	19,721
International	'	'	'	'	'	'	'	'	'	'	'
Geographic information	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	112,150	88,956	86,084
Long-lived tangible assets, net	$2,137	'	'	'	$2,431	'	'	'	$2,137	$2,431	'

Net_Income_Loss_Per_Share_Deta

Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:	'	'	'	'	'	'	'	'	'	'	'
Net income (loss)	$17,326	$1,988	($2,027)	($1,532)	($102)	($19,086)	($755)	$4,045	$15,755	($15,898)	$18,269
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Weighted average shares outstanding	'	'	'	'	'	'	'	'	18,097	17,466	16,982
Weighted average diluted shares outstanding	'	'	'	'	'	'	'	'	18,334	17,466	17,575
Basic net income (loss) per common share (in dollars per share)	$0.98	$0.11	($0.11)	($0.08)	($0.01)	($1.04)	($0.05)	$0.25	$0.87	($0.91)	$1.08
Diluted net income (loss) per common share (in dollars per share)	$0.96	$0.11	($0.11)	($0.08)	($0.01)	($1.04)	($0.05)	$0.24	$0.86	($0.91)	$1.04
Anti-dilutive shares excluded from the determination of diluted net income (loss) per share	'	'	'	'	'	'	'	'	3,163	2,697	442
Stock Options	'	'	'	'	'	'	'	'	'	'	'
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Effect on weighted average common shares outstanding from dilutive securities	'	'	'	'	'	'	'	'	153	'	494
Restricted stock	'	'	'	'	'	'	'	'	'	'	'
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Effect on weighted average common shares outstanding from dilutive securities	'	'	'	'	'	'	'	'	67	'	97
ESPP	'	'	'	'	'	'	'	'	'	'	'
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Effect on weighted average common shares outstanding from dilutive securities	'	'	'	'	'	'	'	'	17	'	2

Selected_Quarterly_Data_Unaudi2

Selected Quarterly Data (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Selected Quarterly Data (Unaudited)	'	'	'	'	'	'	'	'	'	'	'
Revenue	$37,073	$28,159	$27,188	$32,728	$29,775	$22,235	$21,754	$26,885	$125,148	$100,649	$96,922
Gross profit	34,452	25,726	24,776	30,406	27,921	20,130	21,560	26,691	115,360	96,302	96,062
Net income (loss)	17,326	1,988	-2,027	-1,532	-102	-19,086	-755	4,045	15,755	-15,898	18,269
Basic earnings (loss) per share (in dollars per share)	$0.98	$0.11	($0.11)	($0.08)	($0.01)	($1.04)	($0.05)	$0.25	$0.87	($0.91)	$1.08
Diluted earnings (loss) per share (in dollars per share)	$0.96	$0.11	($0.11)	($0.08)	($0.01)	($1.04)	($0.05)	$0.24	$0.86	($0.91)	$1.04
Impairment of intangible assets	'	2,820	'	'	'	'	'	'	2,820	'	'
Gain recognized within operating expenses on change in fair value of contingent consideration	700	5,300	'	'	'	'	'	'	6,000	'	'
Tax benefit as a result of a release of valuation allowance on U.S. federal deferred tax assets	$7,919	'	'	'	'	'	'	'	'	'	'

Related_Party_Transaction_Deta

Related Party Transaction (Details) (Daimler Commerce Partners, L.P., USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Daimler Commerce Partners, L.P.	'	'
Related Party Transaction	'	'
Related party rent expense	$193	$157

SCHEDULE_IIVALUATION_AND_QUALI1

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts	'	'	'
Valuation and qualifying accounts	'	'	'
Balance at Beginning of Year	$679	$251	$226
Charged to Costs and Other	709	460	107
Deductions From Reserves	'	32	82
Balance at End of Year	1,388	679	251
Deferred tax assets - valuation allowance	'	'	'
Valuation and qualifying accounts	'	'	'
Balance at Beginning of Year	8,702	817	996
Charged to Costs and Other	'	7,885	'
Deductions From Reserves	8,123	'	179
Balance at End of Year	$579	$8,702	$817