DTS Inactive 10-K16 Mar 152014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2014	Mar. 05, 2015	Jun. 30, 2014
Document and Entity Information
Entity Registrant Name	DTS, INC.
Entity Central Index Key	1226308
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$243,917,109
Entity Common Stock, Shares Outstanding		17,458,154
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$99,435	$66,025
Short-term investments		5,004
Accounts receivable, net of allowance for doubtful accounts of $143 and $1,388 at December 31, 2014 and 2013 , respectively	12,364	11,637
Deferred income taxes	12,095	5,787
Prepaid expenses and other current assets	5,892	5,480
Income taxes receivable	3,925	2,826
Total current assets	133,711	96,759
Property and equipment, net	27,089	30,116
Intangible assets, net	48,543	50,225
Goodwill	50,356	48,418
Deferred income taxes	26,176	11,667
Other long-term assets	2,395	4,613
Total assets	288,270	241,798
Current liabilities:
Accounts payable	4,492	2,802
Accrued expenses	16,761	12,142
Deferred revenue	10,827	10,262
Income taxes payable	294
Current portion of long-term debt	5,000
Total current liabilities	37,374	25,206
Long-term debt	20,000	30,000
Other long-term liabilities	11,993	3,480
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock-$0.0001 par value, 5,000 shares authorized at December 31, 2014 and 2013; no shares issued and outstanding
Common stock-$0.0001 par value, 70,000 shares authorized at December 31, 2014 and 2013; 21,440 and 20,972 shares issued at December 31, 2014 and 2013, respectively; 17,373 and 17,279 shares outstanding at December 31, 2014 and 2013, respectively	3	3
Additional paid-in capital	241,053	224,971
Treasury stock, at cost- 4,067 and 3,693 at December 31, 2014 and 2013, respectively	-92,184	-84,689
Accumulated other comprehensive income	808	747
Retained earnings	69,223	42,080
Total stockholders' equity	218,903	183,112
Total liabilities and stockholders' equity	$288,270	$241,798

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$143	$1,388
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	21,440	20,972
Common stock, shares outstanding	17,373	17,279
Treasury stock, shares	4,067	3,693

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$143,913	$125,148	$100,649
Cost of revenue	11,095	9,788	4,347
Gross profit	132,818	115,360	96,302
Operating expenses:
Selling, general and administrative	78,570	79,753	78,409
Research and development	37,298	31,145	25,774
Change in fair value of contingent consideration	400	-6,000
Impairment of intangible assets		2,820
Total operating expenses	116,268	107,718	104,183
Operating income (loss)	16,550	7,642	-7,881
Interest and other income (expense), net	-413	-521	-352
Income (loss) before income taxes	16,137	7,121	-8,233
Provision (benefit) for income taxes	-11,006	-8,634	7,665
Net income (loss)	$27,143	$15,755	($15,898)
Net income (loss) per common share:
Basic (in dollars per share)	$1.58	$0.87	($0.91)
Diluted (in dollars per share)	$1.55	$0.86	($0.91)
Weighted average shares outstanding:
Basic (in shares)	17,180	18,097	17,466
Diluted (in shares)	17,561	18,334	17,466

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$27,143	$15,755	($15,898)
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net		94	56
Other, net	61	-6	-41
Total comprehensive income (loss)	$27,204	$15,843	($15,883)

CONSOLIDATED_STATEMENTS_OF_SHA

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Total
In Thousands, unless otherwise specified	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Total
Balance at beginning of period at Dec. 31, 2011	$3	$192,819	($107,222)	$644	$59,558	$145,802
Balance at beginning of period (in shares) at Dec. 31, 2011	16,536
Increase (decrease) in shareholders' equity
Exercise of options and related tax benefit (shortfall) of ($310), ($2,090) and $8,661 for the year ended 2014, 2013 and 2012, respectively		9,432				9,432
Exercise of options and related tax benefit (shortfall) of ($310), ($2,090) and $8,661 for the year ended 2014, 2013 and 2012, 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
Shares withheld for taxes		-985				-985
Restricted stock award forfeitures (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			61,906		-17,335	44,571
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
Balance at end of period at Dec. 31, 2012	3	213,787	-59,848	659	26,325	180,926
Balance at end of period (in shares) at Dec. 31, 2012	18,208
Increase (decrease) in shareholders' equity
Exercise of options and related tax benefit (shortfall) of ($310), ($2,090) and $8,661 for the year ended 2014, 2013 and 2012, respectively		-1,673				-1,673
Exercise of options and related tax benefit (shortfall) of ($310), ($2,090) and $8,661 for the year ended 2014, 2013 and 2012, 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
Shares withheld for taxes		-929				-929
Restricted stock award forfeitures (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
Balance at end of period at Dec. 31, 2013	3	224,971	-84,689	747	42,080	183,112
Balance at end of period (in shares) at Dec. 31, 2013	17,279					17,279
Increase (decrease) in shareholders' equity
Exercise of options and related tax benefit (shortfall) of ($310), ($2,090) and $8,661 for the year ended 2014, 2013 and 2012, respectively		4,174				4,174
Exercise of options and related tax benefit (shortfall) of ($310), ($2,090) and $8,661 for the year ended 2014, 2013 and 2012, respectively (in shares)	206
Issuance of common stock under employee stock purchase plan		2,233				2,233
Issuance of common stock under employee stock purchase plan (in shares)	172
Shares withheld for taxes		-817				-817
Restricted stock unit vesting (in shares)	90
Stock-based compensation charge		10,492				10,492
Stock repurchases			-7,495			-7,495
Stock repurchases (in shares)	-374
Comprehensive income (loss):
Net income (loss)					27,143	27,143
Other comprehensive income				61		61
Balance at end of period at Dec. 31, 2014	$3	$241,053	($92,184)	$808	$69,223	$218,903
Balance at end of period (in shares) at Dec. 31, 2014	17,373					17,373

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
Exercise of options, tax benefit			$8,661
Exercise of options, tax shortfall	$310	$2,090

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$27,143	$15,755	($15,898)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	14,404	15,399	9,625
Stock-based compensation charges	10,492	11,727	11,316
Deferred income taxes	-14,740	-14,849	5,392
Tax benefits (shortfalls) from stock-based awards	-310	-2,090	8,661
Excess tax benefits from stock-based awards	-518	-67	-8,879
Change in fair value of contingent consideration	400	-6,000
Impairment of intangible assets		2,820
Other	117	858	822
Changes in operating assets and liabilities, net of business acquisitions:
Accounts receivable	-377	-2,474	5,316
Prepaid expenses and other assets	-1,799	-980	-2,381
Accounts payable, accrued expenses and other liabilities	6,600	-3,568	-2,899
Deferred revenue	459	2,603	6,032
Income taxes receivable/payable	-805	2,281	-2,316
Net cash provided by operating activities	41,066	21,415	14,791
Cash flows from investing activities:
Purchases of held-to-maturity investments			-3,450
Purchases of available-for-sale investments		-4,974	-46,890
Maturities of held-to-maturity investments			20,120
Maturities of available-for-sale investments	5,000	19,184	31,534
Sales of held-to-maturity investments			9,109
Sales of available-for-sale investments			24,760
Cash paid for business acquisitions, net	-3,200		-59,616
Sale of other assets	725
Purchases of property and equipment	-1,579	-2,766	-4,225
Purchases of intangible assets	-2,025	-938	-584
Net cash provided by (used in) investing activities	-1,079	10,506	-29,242
Cash flows from financing activities:
Proceeds from long-term borrowings	30,000		30,000
Repayment of long-term borrowings	-35,000
Payment of contingent consideration	-500	-500
Proceeds from the issuance of common stock under stock-based compensation plans	6,717	2,476	1,976
Cash paid for shares withheld for taxes	-817	-929	-985
Excess tax benefits from stock-based awards	518	67	8,879
Purchases of treasury stock	-7,495	-24,841	-14,532
Net cash provided by (used in) financing activities	-6,577	-23,727	25,338
Net change in cash and cash equivalents	33,410	8,194	10,887
Cash and cash equivalents, beginning of the year	66,025	57,831	46,944
Cash and cash equivalents, end of the year	99,435	66,025	57,831
Supplemental disclosure of cash flow information:
Cash paid for interest	349	363	168
Cash paid for income taxes	771	1,942	2,091
Significant non-cash transactions:
Contingent consideration for business acquisition			7,500
Common stock issued as consideration for business acquisition			44,571
Accruals for purchases of intangible assets	$1,000

The_Company

The Company	12 Months Ended
The Company	Dec. 31, 2014
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, set-top-boxes, soundbars, wireless speakers, video game consoles, Blu-ray Disc players, automotive audio systems, audio/video receivers, DVD-based products and home theater systems. In addition, the Company provides technologies 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 audio 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 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, and in May 2005, the Company changed its name from Digital Theater Systems, Inc. to DTS, Inc.
	Acquisitions
	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. During 2013, the Company finalized the purchase price accounting related to Phorus.
	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. During 2013, the Company finalized the purchase price accounting related to SRS and retrospectively applied measurement period adjustments to the consolidated financial statements.
	On August 14, 2014, the Company acquired substantially all of the assets of Manzanita Systems, Inc. (Manzanita). The preliminary allocation of the purchase price, which the Company considers to be immaterial to the consolidated financial statements, was based on estimates and valuations. The final allocation of the purchase price was completed in the fourth quarter of 2014, resulting in no material adjustments.
	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, 2014
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 (US 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. All intercompany accounts and transactions have been eliminated.
	Use of Estimates
	The preparation of financial statements in accordance with US 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 as of 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, valuations of goodwill, other intangible assets, and long-lived assets, stock-based compensation, income taxes and business combinations. The Company bases its estimates on historical and anticipated results, trends and 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.
	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 technologies to consumer electronics products manufacturers in the US 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.
	Two customers accounted for 15% and 14%, respectively, of revenues for the year ended December 31, 2014. 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.
	As of December 31, 2014, one customer accounted for 42% of accounts receivable, which resulted from the normal course of business, and another customer accounted for 26% of accounts receivable, which resulted from royalty recoveries. One customer accounted for 51% of accounts receivable at December 31, 2013, which resulted largely 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 US 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:

	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 evaluates the carrying value of goodwill and indefinite-lived intangibles for impairment on an annual basis as of October 31 of each year at the reporting unit level, or more frequently if events or circumstances indicate that the goodwill and other intangibles might be impaired. 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. The Company operates in one reportable and operating segment and has two separate reporting units: (i) the Phorus business, and (ii) the rest of the business.
	To test goodwill for impairment, the Company performs a qualitative assessment (Step 0) to determine whether further impairment testing is necessary. Qualitative factors considered include but are not limited to general macroeconomic conditions; industry and market conditions and trends; overall financial performance and trends in cash flows or revenue; changes in strategy or customers; and changes in share price.
	If further testing is necessary, a Step 1 test is performed to evaluate the recoverability of goodwill, which 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 Step 2 and estimate the fair value of the goodwill itself and compare it to the carrying value. 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.
	Similar to goodwill, 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.
	The Company's definite-lived intangibles principally consist of customer relationships, acquired technology, contractual rights arrangements and patents, tradenames and trademarks, which are being amortized over their respective estimated useful lives. Costs incurred in securing patents and trademarks and protecting the Company's proprietary technology and brand name paid to third parties are capitalized and internal costs are expensed as incurred. 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. 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.
	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. Determining whether and when these criteria have been satisfied may involve assumptions and judgments that can have a significant impact on the timing and amount of revenue that is reported.
	Revenue from licensing audio technology, trademarks and know-how is generated from licensing agreements with consumer electronics products manufacturers that pay a license fee for products manufactured or shipped. Licensees with a per-unit arrangement pay a per-unit license fee for each product manufactured or shipped, as set forth in each license agreement. Licensees report manufacturing or shipping information in the quarter subsequent to when such activity takes place. Consequently, the Company recognizes revenue from these per-unit licensing agreements 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 quarter 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.
	Certain licensees have entered into minimum guarantee arrangements, whereby licensees pay a flat fee for the right to license certain technology over the contract term. These agreements stipulate 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 recognizes the minimum, or flat fee amount, on these agreements as revenue ratably over the contract term. 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 have under-reported the amount of royalties owed under a license agreement or who utilize its intellectual property without a license. As a result of these activities, from time to time, the Company may recognize royalty revenues that relate to infringements or under-reporting 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 are recognized as revenue in future periods when the applicable revenue recognition criteria are met. Typically, deferred revenues arise from flat fee or minimum guarantee arrangements that allow licensees to manufacture an unlimited or specified 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, 2014, 2013 and 2012, withholding taxes were $3,377, $5,610, and $4,970, respectively. Withholding taxes were lower in 2014 compared to the prior years due to the transfer of Japan intellectual property licensing rights from Ireland to the US in 2014.
	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 all the Company's wholly-owned subsidiaries is the US dollar. Certain subsidiaries have monetary assets and liabilities that are denominated in a currency that is different than the functional currency. The gains and losses resulting from this remeasurement and translation of monetary assets denominated in a currency that is different than the functional currency are reflected in the determination of net income (loss) and included in interest and other income (expense), net.
	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 has been comprised mostly of foreign currency translation, as a result of certain wholly-owned subsidiaries having a non-US dollar functional currency in prior years.
	Advertising Expenses
	Advertising and promotional costs are expensed as incurred and amounted to $4,489, $4,408, and $3,584, for the years ended December 31, 2014, 2013 and 2012, respectively.
	Stock Repurchases
	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.
	Stock-Based Compensation
	The Company accounts for stock-based compensation using the fair value recognition approach. The Company uses the Black-Scholes option-pricing model to determine the fair value of any stock options granted, which requires the Company to make estimates regarding dividend yields on its common stock, expected volatility in the price of its common stock, risk free interest rates, forfeiture rates and the expected life of the option. The fair value of any restricted stock awarded is calculated using the closing market price of the Company's common stock on the date of grant. The Company recognizes these compensation costs net of the applicable forfeiture rates and for only those shares expected to vest on a straight-line basis over the requisite service period of each award, which is generally four years. The Company estimates the forfeiture rate based on its historical experience.
	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 primarily 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. 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 Pronouncements
In July 2013, the Financial Accounting Standards Board (FASB) 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 ASU 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. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company fully adopted this ASU in the first quarter of 2014. As of December 31, 2014, $2,052 of unrecognized tax benefits were recorded as a reduction to non-current deferred tax assets on the consolidated balance sheet.
In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)." This ASU outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. For public entities, this ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. Early adoption is not permitted. Entities have the option of applying either a full retrospective approach or a modified approach. The Company is evaluating the potential impact of adoption of this ASU on its consolidated financial statements.

Cash_Cash_Equivalents_and_Inve

Cash, Cash Equivalents and Investments	12 Months Ended
Cash, Cash Equivalents and Investments	Dec. 31, 2014
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,
		2014		2013
	Cash and cash equivalents:
	Cash	$	17,899	$	26,374
	Money market accounts		81,536		39,651

	Total cash and cash equivalents	$	99,435	$	66,025


	Short-term investments:
	US government and agency securities		—		5,004

	Total short-term investments	$	—	$	5,004


	The Company had no material gross realized or unrealized holding gains or losses from its investments for the years ended December 31, 2014, 2013 and 2012.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2014
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 Company classifies the fair value of the contingent consideration liability within Level 3 of the fair value hierarchy, as the fair value is based upon unobservable inputs supported by no market activity. As of December 31, 2014 and 2013, the Company measured the fair value of the remaining contingent consideration using an income approach, based on an analysis of projected cash flows using a discount rate of 15% and 17%, respectively. 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, 2014
	Contingent consideration(1)		$	(900	)	$	—		$	—	$	(900	)
	As of December 31, 2013
	As of December 31, 2013
	US government and agency securities		$	5,004		$	—		$	5,004	$	—
	Contingent consideration(2)		$	(1,000	)	$	—		$	—	$	(1,000	)


	-1	The full balance was classified in accrued expenses on the consolidated balance sheet.
	-2	$400 and $600 were classified in accrued expenses and other long-term liabilities, respectively, on the consolidated balance sheet.
	The changes in the fair value of liabilities categorized as Level 3 were:

			For the Years Ended
			December 31,
			2014			2013
	Balance, beginning of year		$	(1,000	)	$	(7,500	)
	Payment of contingent consideration(1)			500			500
	Change in fair value of contingent consideration(2)			(400	)		6,000

	Balance, end of year		$	(900	)	$	(1,000	)




	-1	This resulted from achievement of the first and second milestones of the Phorus contingent consideration in the fourth quarters of 2014 and 2013, respectively.
	-2	These changes are reflected within operating expenses in the consolidated statements of operations.

Property_and_Equipment

Property and Equipment	12 Months Ended
Property and Equipment	Dec. 31, 2014
Property and Equipment
Property and Equipment
	Note 5—Property and Equipment
	Property and equipment was:

		As of December 31,
		2014			2013
	Land	$	6,600		$	6,600
	Building and improvements		21,407			21,433
	Machinery and equipment		5,520			5,264
	Office furniture and fixtures		7,988			7,560
	Leasehold improvements		4,418			4,409
	Software		7,188			6,738

			53,121			52,004
	Less: Accumulated depreciation		(26,032	)		(21,888	)

	Property and equipment, net	$	27,089		$	30,116


	Depreciation expense was $4,587, $5,550, and $4,833, for the years ended December 31, 2014, 2013 and 2012, respectively.

Business_Combination

Business Combination	12 Months Ended
Business Combination	Dec. 31, 2014
Business Combination
Business Combination
	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 retrospectively recognized adjustments to the fair value of certain assets acquired and liabilities assumed in 2012. 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 final purchase price allocation, as adjusted, was:

		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


	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 included in the consolidated statements of operations were:

		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 of Manzanita's Assets
	On August 14, 2014, the Company acquired substantially all of the assets of Manzanita. This asset purchase was accounted for using the acquisition method of accounting. The preliminary allocation of the purchase price, which the Company considers to be immaterial to the consolidated financial statements, was based on estimates and valuations. The final allocation of the purchase price was completed in the fourth quarter of 2014, resulting in no material adjustments.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
Goodwill and Other Intangible Assets	Dec. 31, 2014
Goodwill and Other Intangible Assets
Goodwill and Other Intangible Assets
	Note 7—Goodwill and Other Intangibles
	During the year ended December 31, 2014, the Company did not identify any events or changes in circumstances that indicated the carrying value of its intangibles may not be recoverable. As such, there was no impairment of intangibles for the year ended December 31, 2014. In the fourth quarter of 2014, the Company performed its annual assessment of goodwill impairment for its two reporting units as of October 31, 2014. The Company performed a qualitative assessment (Step 0) of both reporting units to determine whether further impairment testing was necessary using the qualitative factors as discussed in Note 2, "Significant Accounting Policies." Based on the assessments, no goodwill impairment was identified for the year ended December 31, 2014.
	During the year ended December 31, 2013, the Company performed an interim impairment test of goodwill and certain intangibles associated with the Phorus reporting unit as a result of revised forecasts and lower than expected results. For the definite-lived intangibles, the Company first performed an undiscounted cash flow analysis which indicated the definite-lived intangible assets were not fully recoverable, and then used a discounted cash flow method to estimate the fair value, resulting in an impairment charge for the amount that the carrying amount of the definite-lived intangible assets exceeded the fair value. For the indefinite-lived intangibles, the Company used a discounted cash flow method to estimate the fair value of the assets and recognized an impairment charge for the amount that the carrying amount of the assets exceeded the fair value. As a result, the Company recorded an impairment charge of $2,820 in the consolidated statement of operations. For goodwill, due to the negative carrying value of the Phorus reporting unit, the Company performed a qualitative assessment and determined that it was more likely than not that a goodwill impairment existed. As such, the Company proceeded to Step 2 of the goodwill impairment test, and estimated the fair value of the reporting unit using both income and market approaches, including a discounted cash flow method. The Company estimated that the fair value of goodwill associated with the Phorus reporting unit substantially exceeded the carrying value. As such, no goodwill impairment was recognized for the year ended December 31, 2013.
	The changes in the Company's goodwill were:

			Goodwill
	Balance at December 31, 2012 and 2013		$	48,418
	Increase related to business acquisitions			1,938

	Balance at December 31, 2014		$	50,356


	To date, there has been no impairment of goodwill.
	The Company's other intangible assets were:

					As of December 31, 2014							As of December 31, 2013
			Weighted		Gross		Accumulated			Net		Gross		Accumulated			Net
			Average		Amount(1)		Amortization			Carrying		Amount(1)		Amortization			Carrying
			Life (Years)							Amount							Amount
	Acquired technology			6	$	18,483	$	(10,575	)	$	7,908	$	16,763	$	(8,193	)	$	8,570
	Customer relationships			8		45,801		(14,525	)		31,276		45,590		(8,792	)		36,798
	Non-compete			2		492		(402	)		90		384		(350	)		34
	Tradename			5		3,261		(1,581	)		1,680		3,000		(1,002	)		1,998
	Patents			5		3,405		(1,233	)		2,172		3,036		(953	)		2,083
	Trademarks			10		785		(357	)		428		669		(297	)		372
	Contractual Rights			5		6,288		(1,299	)		4,989		—		—			—

	Total amortizable intangible assets					78,515		(29,972	)		48,543		69,442		(19,587	)		49,855
	IPR&D												370					370
	IPR&D					—		—			—		370		—			370

	Total intangible assets				$	78,515	$	(29,972	)	$	48,543	$	69,812	$	(19,587	)	$	50,225



	-1	Includes write-downs of $2,304 for acquired 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 Company capitalizes amounts due or paid under certain contractual rights arrangements and amortizes the amounts over their expected useful lives, which is generally five years. The associated amortization expense has been included in cost of revenue in the consolidated statements of operations. As of December 31, 2013, these assets amounted to $3,330, net of accumulated amortization of $620. Of this net amount, $662 was included in prepaid expenses and other current assets and $2,668 was included in other long-term assets in the consolidated balance sheet as of December 31, 2013. As of December 31, 2014, the Company has reclassified the balances of these assets to intangible assets. Future amounts due or paid under these arrangements will be capitalized as intangible assets and reflected as investing activities in the Company's consolidated statements of cash flows.
	Amortization of intangibles included in the consolidated statements of operations was:

			For the Years Ended
			December 31,
			2014		2013		2012
	Cost of revenue		$	8,793	$	8,848	$	4,151
	Operating expenses			1,024		1,001		641

	Total amortization of intangible assets		$	9,817	$	9,849	$	4,792


	The Company expects the future amortization of intangible assets held at December 31, 2014 to be:

	Years Ending December 31,		Estimated
			Amortization
			Expense
	2015		$	10,962
	2016			10,240
	2017			9,673
	2018			7,844
	2019			6,584
	2020 and thereafter			3,240

	Total		$	48,543

Accrued_Expenses

Accrued Expenses	12 Months Ended
Accrued Expenses	Dec. 31, 2014
Accrued Expenses
Accrued Expenses
	Accrued expenses consisted of:

		As of December 31,
		2014		2013
	Accrued payroll and related benefits	$	13,893	$	9,073
	Contingent consideration		900		400
	Other		1,968		2,669

	Total accrued expenses	$	16,761	$	12,142

Longterm_Debt

Long-term Debt	12 Months Ended
Long-term Debt	Dec. 31, 2014
Long-term Debt
Long-term Debt
	Note 9—Long-term Debt
	On September 29, 2014, the Company entered into a Credit Agreement (the "Credit Agreement") with Wells Fargo Bank, National Association (Wells Fargo), together with the other lenders thereunder from time to time (collectively, the "Lenders"). The Credit Agreement provides the Company with $50,000 in the form of (i) a $25,000 secured revolving line of credit (the "Revolver"), with a $1,000 sublimit for the issuance of letters of credit, and (ii) a $25,000 secured term loan (the "Term Loan"). In connection with the Credit Agreement, the Company borrowed $25,000 under the Term Loan and $5,000 under the Revolver, and repaid the $30,000 line of credit under the previously existing agreement with MUFG Union Bank, N.A. (formerly known as Union Bank, N.A.). The Revolver and Term Loan will be used to finance permitted acquisitions and for working capital and general corporate purposes. In the fourth quarter of 2014, the Company repaid $5,000 on the Term Loan, resulting in $20,000 remaining due under the Term Loan and $5,000 due under the Revolver as of December 31, 2014.
	Amounts borrowed under the Credit Agreement bear interest, at the option of the Company, at either (i) LIBOR plus 1.0% or (ii) the higher of (a) the rate of interest most recently announced by Wells Fargo as its prime rate or (b) the Federal Funds Rate plus 0.50%. Pursuant to the Credit Agreement, the Company is required to pay an annual commitment fee on the unused portion of the Revolver of either (i) 0.20%, if an average minimum deposit equal to or greater than $10,000 is held in a Wells Fargo bank account, or (ii) 0.30% otherwise.
	The Company's ability to borrow amounts under the Credit Agreement is conditioned upon its compliance with specified covenants, including certain financial covenants that require the Company to maintain a (i) minimum rolling four quarter adjusted EBITDA of $30,000 for each fiscal quarter ending prior to December 31, 2014, and $32,000 for each fiscal quarter ending after December 31, 2014; and (ii) minimum liquidity amount of $35,000. In addition, the Credit Agreement contains covenants that, among other things, restrict the Company's ability to dispose of property, enter into mergers, acquisitions or other business combination transactions, incur additional indebtedness, grant liens, pay dividends and make certain other restricted payments. The Company may pay dividends on its stock provided that after giving effect to any such dividend, the Company (i) is in pro forma compliance with the financial covenants described above, (ii) has a debt to adjusted EBITDA ratio not exceeding 1.25 to 1.00, (iii) retains cash and cash equivalents of not less than $40,000 and (iv) has not undergone an event of default.
	The Credit Agreement contains customary events of default. All advances under the Revolver are due on September 29, 2017, or earlier in the event of a default. $5,000 of the principal amount of the Term Loan is due on October 1, 2015, and $1,250 of the principal amount is due in quarterly installments thereafter, with the remaining balance due on September 29, 2017. Upon the occurrence and during the continuance of an event of default, the Lenders may declare all outstanding amounts under the Revolver and the Term Loan immediately due and payable and may terminate commitments to make any additional advances thereunder.
	In connection with the Credit Agreement, the Company and certain of its US subsidiaries entered into a security agreement with Wells Fargo pursuant to which the Company and certain of its US subsidiaries granted the Lenders a first priority perfected security interest in (i) all their respective current and later acquired tangible and intangible assets and certain current and future domestic subsidiaries and (ii) up to 65% of the stock of certain current and future foreign subsidiaries to secure amounts borrowed under the Credit Agreement.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2014
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,
	2015	$	2,267
	2016		1,911
	2017		1,066
	2018		778
	2019		650
	2020 and thereafter		1,279

		$	7,951


	Rent expense amounted to $2,388, $2,270, and $1,874 for the years ended December 31, 2014, 2013 and 2012, respectively.
	Pursuant to the amended Phorus Asset Purchase Agreement, contingent consideration of up to $1,000 could be due and payable by the end of 2015. For additional information, refer to Notes 4 and 6, "Fair Value Measurements" and "Business Combinations", respectively.
	As of December 31, 2014, the Company has accrued $1,000 of payments due under certain contractual rights arrangements. Additionally, under existing contractual rights arrangements, the Company may be obligated to pay up to approximately $6,700 over an estimated period of five years if certain milestones are achieved. Subsequent to December 31, 2014, the Company entered into an additional contractual rights arrangement under which the Company may be obligated to pay up to approximately $2,100 over an estimated period of five years if certain milestones are achieved.
	During the year ended December 31, 2014, the Company implemented certain staffing changes to allow the Company to facilitate further investments in growth markets. In connection with these changes, the Company recorded severance and related costs of $1,799, of which $522 was unpaid as of December 31, 2014.
	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
Income Taxes	Dec. 31, 2014
Income Taxes
Income Taxes
	Note 11—Income Taxes
	US and foreign income (loss) before income taxes and details of the provision (benefit) for income taxes were:

			For the Years Ended
			December 31,
			2014			2013			2012
	US		$	6,032		$	(18,019	)	$	(22,498	)
	Foreign			10,105			25,140			14,265

	Income (loss) before income taxes		$	16,137		$	7,121		$	(8,233	)


	Current:
	Federal		$	498		$	(1,135	)	$	(2,289	)
	State			(918	)		19			(1,080	)
	Foreign			4,154			7,331			5,642

	Total current			3,734			6,215			2,273

	Deferred:
	Federal			(15,127	)		(13,301	)		2,974
	State			568			(1,133	)		971
	Foreign			(181	)		(415	)		1,447

	Total deferred			(14,740	)		(14,849	)		5,392

	Provision (benefit) for income taxes		$	(11,006	)	$	(8,634	)	$	7,665


	The components of temporary differences that gave rise to deferred income taxes were:

			As of December 31,
			2014			2013
	Deferred tax assets:
	Accrued revenues		$	7,899		$	1,496
	Net operating loss carryforwards			559			5,364
	Credit carryforwards, net of unrecognized tax benefits			14,418			13,800
	Depreciation and amortization			933			1,737
	Stock-based compensation			8,893			8,026
	Accruals, reserves and other			2,084			1,236
	Acquired intangibles			17,424			2,551

	Total gross deferred tax assets			52,210			34,210
	Valuation allowance			(494	)		(579	)

	Total deferred tax assets			51,716			33,631

	Deferred tax liabilities:
	Acquired intangibles			13,410			16,130
	Prepaid expenses			35			47

	Total deferred tax liabilities			13,445			16,177

	Deferred tax assets, net		$	38,271		$	17,454


	Current deferred tax assets, net		$	12,095		$	5,787
	Non-current deferred tax assets, net			26,176			11,667

	Deferred tax assets, net		$	38,271		$	17,454


	The Company regularly evaluates the need for a valuation allowance against its deferred tax assets. In 2012, the Company's US operations had moved to a position of cumulative loss for the then most recent three-year period. As such, as of December 31, 2012, the Company established a valuation allowance against its US 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 believed would generate sufficient US taxable income to make it more likely than not that its net US federal deferred tax assets would be realized. The strategy included a special one-time transfer of certain Japan and Taiwan intellectual property licensing rights that was transacted on January 1, 2014, creating US taxable income. As of the transfer date, the US has a right to share in future royalty income from customers in Japan and Taiwan, in addition to royalty income from customers in the US. The transaction did not result in a change in the Company's accumulated reinvested earnings in its foreign subsidiaries, and did not affect the Company's status of being permanently reinvested in its foreign subsidiaries. As a result of the US taxable income created by this strategy, the Company concluded that it was more likely than not that the valuation allowance on US federal deferred tax assets was no longer necessary. Accordingly, the Company released all of the US federal valuation allowance against net US federal deferred tax assets resulting in a $7,919 increase in the benefit for income taxes for the year ended December 31, 2013.
As of December 31, 2014, the Company believes it is more likely than not that its future taxable income will be sufficient to realize all of its deferred tax assets, with the exception of its foreign net operating losses incurred by the Company's subsidiary in the United Kingdom.
Since the intellectual property rights transfer did not result in a change in the Company's accumulated reinvested earnings in its foreign subsidiaries, no deferred tax liability was recorded for the year ended December 31, 2013. For the year ended December 31, 2014, the net impact of the taxable intellectual property rights transfer was a tax benefit, as a result of the related foreign tax credits and future tax deductions available under Section 197 of the Internal Revenue Code (IRC).
As of December 31, 2014, the Company had approximately $1,601 and $14,420 in federal and state tax loss carryforwards which begin to expire in 2032 and 2018, respectively. Included in these 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 $948. 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, 2014, the Company had federal foreign tax credit carryforwards of $10,999 and federal R&D and other tax credit carryforwards of $2,056, which begin to expire in 2019. In addition, the Company had state R&D tax credit carryforwards of $2,801, which do not expire. Utilization of certain 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 financial statement purposes or for which the income tax deduction exceeded the expense recorded in the financial statements.
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,
		2014			2013			2012
Statutory federal rate			35	%		35	%		35	%
State income taxes, net			(0.6	)		(5.5	)		(2.1	)
Effect of varying foreign rates			(15.5	)		(96.5	)		50.1
Foreign withholding taxes			20.9			78.8			(60.2	)
Unremitted earnings of foreign subsidiary			—			(3.4	)		(9.7	)
Foreign IP transfer to US			147.4			—			—
Amortization of acquired foreign intangibles			(103.5	)		—			—
Non-deductible meals and entertainment			0.4			1			(0.6	)
Stock-based compensation expense			5.1			7			(7.6	)
Foreign tax credits			(131.4	)		—			—
Research and development credits			(4.5	)		(11.9	)		—
Domestic production activities deduction			(2.5	)		—			—
Unrecognized tax benefits			6.6			8			38.3
Tax audit settlements			(20.6	)		(11.6	)		(108.9	)
Deferred tax asset adjustment			(2.0	)		(12.0	)		3.6
Prepaid income taxes			(4.2	)		—			—
Valuation allowance			—			(111.2	)		(16.4	)
Other			1.2			1.1			(14.6	)

Effective tax rate			(68.2	)%		(121.2	)%		(93.1	)%


The effective tax rate for the year ended December 31, 2014 differed from the US statutory rate largely due to the net tax benefit of $12,612 associated with the transfer of intellectual property licensing rights on January 1, 2014, which allowed the Company to utilize certain foreign taxes paid as credits in the US, and to amortize the Company's basis in the intellectual property over 15 years for tax purposes.
The Company has not provided for US income taxes or foreign withholding taxes in its effective tax rate on approximately $72,289 of undistributed earnings of foreign subsidiaries as of December 31, 2014. 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 US, and accordingly, no deferred tax liability has been established relative to these earnings.
As of December 31, 2014 and 2013, the Company's uncertain tax positions were $11,246 and $9,701, respectively, of which $9,194 and $1,713, respectively, were recorded in other long-term liabilities. The remaining amounts were recorded as a reduction to non-current deferred tax assets. These amounts include $136 and $121, respectively, for accrued interest. The increase in unrecognized tax benefits during the year ended December 31, 2014 was primarily attributable to uncertain tax positions relating to foreign tax credits and transfer pricing positions taken with respect to the Company's foreign subsidiaries. The settlement of the 2009 to 2011 US federal tax audit with the Internal Revenue Service (IRS) in 2014 had no material impact on the Company's unrecognized tax benefits. 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, 2014, 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 gross unrecognized tax benefits:

		Unrecognized
		Tax Benefits
Balance at January 1, 2012		$	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
Additions for tax positions of prior years			876
Additions for tax positions of the current year			919
Lapse of applicable statutes			(265	)

Balance at December 31, 2014		$	11,110


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 US and other foreign jurisdictions. With few exceptions, the Company is no longer subject to US federal income tax examinations by the IRS for the years prior to 2012. The California Franchise Tax Board (FTB) is conducting a state tax examination for the years 2009 and 2010, including certain prior period carryforwards. Significant 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 various foreign jurisdictions, the IRS, the FTB, and various state governments could differ materially from that recorded in the consolidated financial statements.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
Stock-Based Compensation	Dec. 31, 2014
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.
	Stock-based compensation costs and related income tax benefits were:

			For the Years Ended
			December 31,
			2014			2013			2012
	Stock-based compensation cost:
	Selling, general and administrative		$	7,819		$	8,872		$	8,940
	Research and development			2,673			2,855			2,376

	Total stock-based compensation cost		$	10,492		$	11,727		$	11,316


	Income tax benefit		$	3,070		$	4,779		$	4,611


	Stock Plans
	In April 2003, the Company adopted the 2003 Equity Incentive Plan (the "2003 Plan") under which a total of 3,000 shares were authorized for future issuances of common stock. The 2003 Plan contained a 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"). 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.
	In August 2014, the Company's Board of Directors adopted the DTS, Inc. 2014 New Employee Incentive Plan (the "2014 Plan") without stockholder approval pursuant to Rule 5635(c)(4) of the NASDAQ Listing Rules, and reserved 50 shares of common stock for issuance pursuant to the grant of stock-based awards under this plan.
	Options granted under all the plans may be non-qualified options. Furthermore, options granted under all the plans other than the 2014 Plan may be incentive stock options intended to satisfy the requirements of Section 422 of the IRC and the regulations thereunder. Options generally become exercisable over a four-year period and expire in ten years. Restricted stock units granted under the plans generally vest over a four-year period.
	Stock Options
	The fair value of each 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,
			2014			2013			2012
	Risk free interest rate			1.1	%		0.7	%		0.6	%
	Expected lives (years)			4.3			4.2			4.0
	Dividend yield			0	%		0	%		0	%
	Expected volatility			43	%		44	%		49	%
	The risk-free interest rate was the average interest rate of US government bonds of comparable term to the options on the dates of the option grants. 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 dividend yield was not calculated because the Company does not currently expect to pay a dividend. The expected volatility was based on the historical volatility of the Company's common stock.
	The following 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, 2013			3,319		$	24.68
	Granted			439			21.07
	Exercised			(206	)		21.76
	Forfeited			(65	)		21.66
	Expired			(174	)		26.91

	Options outstanding at December 31, 2014			3,313		$	24.33			6.2		$	25,319


	Options exercisable at December 31, 2014			1,972		$	24.89			4.8		$	14,656


	Options vested and expected to vest at December 31, 2014			3,289		$	24.34			6.2		$	25,081


	There were 439, 724, and 924 options granted during the years ended December 31, 2014, 2013 and 2012, respectively. The weighted-average grant-date fair value of options granted during the years ended December 31, 2014, 2013 and 2012 was $7.66, $7.24, and $10.25, respectively. The aggregate intrinsic value of options exercised during the years ended December 31, 2014, 2013 and 2012 was $1,438, $152, and $1,399, respectively.
	Compensation expense for stock options was $5,040, $5,507, and $5,153 for the years ended December 31, 2014, 2013 and 2012, respectively. As of December 31, 2014, total remaining unrecognized compensation expense related to unvested stock options was approximately $7,629, which will be amortized over the weighted-average remaining service period of 1.6 years.
	Restricted Stock
	The following summarizes restricted stock activity:

			Number of			Weighted-
			Shares			Average
			Grant-Date
			Fair Value
Unvested stock at December 31, 2013				306		$	26.14
Granted				358			20.54
Vested			(130	)		26.81
Forfeited			(46	)		22.12

Unvested stock at December 31, 2014			488		$	22.27


The weighted-average grant-date fair value of restricted stock granted during the years ended December 31, 2014, 2013 and 2012 was $20.54, $19.95 and $25.92, respectively.
Compensation expense on restricted stock awards and units was $3,902, $3,529, and $3,669 for the years ended December 31, 2014, 2013 and 2012, respectively. As of December 31, 2014, total remaining unrecognized compensation expense related to restricted stock was $7,692, which will be amortized over the weighted-average remaining service period of 1.8 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 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 over a 3-year performance period from January 1, 2011 to December 31, 2013. The Company granted 199 units on February 27, 2011, which had an aggregate grant-date fair value of $5,287, which was measured on the date of grant using the Monte Carlo simulation model. 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, and $1,826 for the years ended December 31, 2013 and 2012, respectively. As of December 31, 2013, the performance criteria were not met and the units automatically expired.
Performance-Based Restricted Stock Units (PSUs)
On March 13, 2014, the Compensation Committee of the Board of Directors granted 134 PSUs to certain employees under the 2012 Plan. The PSUs will vest in two equal installments upon achievement of certain internal performance goals, with one-half vesting on February 15, 2016 and the remaining vesting on February 15, 2017, in each case assuming the specified performance goals are achieved and the service conditions are met. The performance goals will be measured as of December 31, 2015. Each PSU represents the contingent right to receive between zero and two shares of the Company's common stock upon vesting, subject to the level of achievement of the specified performance goals. Any portion of the PSUs that do not vest due to performance below the minimum required level for vesting will be forfeited.
The PSUs had a grant-date fair value of $20.37 per PSU. The related compensation expense is calculated using the number of shares of common stock expected to vest based on the probability and estimated level of achievement of the performance goals. Compensation expense is recognized over the requisite service period, and will be adjusted in subsequent reporting periods if the assessed probability or estimated level of achievement of the performance goals changes.
For the year ended December 31, 2014, compensation expense for PSUs was $578. As of December 31, 2014, total remaining unrecognized compensation expense related to PSUs was estimated to be $1,110, which will be amortized over the weighted-average remaining service period of 1.7 years.
Considerable judgment is required in assessing the probability and estimated level of achievement of the performance goals. Accordingly, use of different assumptions or estimates could result in materially different compensation expense.
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 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 adopted the 2013 Employee Stock Purchase Plan and 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 for ESPP 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,
		2014			2013			2012
Risk free interest rate			0.1	%		0.2	%		0.2	%
Expected lives (years)			1.2			1.2			0.7
Dividend yield			0	%		0	%		0	%
Expected volatility			39	%		52	%		61	%
The risk-free interest rate was the average interest rate of US government bonds of comparable term to the expected life. The expected life represents the estimated length of each offering period. The dividend yield was not calculated because the Company does not currently expect to pay a dividend. The expected volatility was based on the historical volatility of the Company's common stock.
Compensation expense under the ESPP was $972, $871, and $668 for the years ended December 31, 2014, 2013 and 2012, respectively.

Defined_Contribution_Plan

Defined Contribution Plan	12 Months Ended
Defined Contribution Plan	Dec. 31, 2014
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 through payroll deductions. All regular full time employees on the US 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, 2014, 2013 and 2012, the costs of the Company's matching contributions were $1,100, $859, and $656, respectively.

Common_Stock_Repurchases

Common Stock Repurchases	12 Months Ended
Common Stock Repurchases	Dec. 31, 2014
Common Stock Repurchases
Common Stock Repurchases
	Note 14—Common Stock Repurchases
	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.
	In February 2014, 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. As of December 31, 2014, the Company had repurchased 374 shares of common stock under this authorization for an aggregate of $7,495.
	All shares repurchased under these authorizations were accounted for as treasury stock.

Segment_and_Geographic_Informa

Segment and Geographic Information	12 Months Ended
Segment and Geographic Information	Dec. 31, 2014
Geographic Information
Geographic Information
	Note 15—Segment and Geographic Information
	The Company operates as a single reportable segment on an enterprise-wide basis. The Company primarily generates revenue by licensing its technologies to consumer electronics manufacturers.
	Revenue by geographical area, based on the customer's country of domicile, was:

		For the Years Ended December 31,
		2014		2013		2012
	US	$	21,227	$	12,998	$	11,693
	Japan		57,156		42,256		41,203
	South Korea		33,952		45,051		27,110
	China		16,126		12,690		7,395
	Other international		15,452		12,153		13,248

	Total international		122,686		112,150		88,956

	Total revenues	$	143,913	$	125,148	$	100,649


	Long-lived tangible assets, net of accumulated depreciation, by geographic region were:

		As of December 31,
		2014		2013
	US	$	25,494	$	27,979
	International		1,595		2,137

	Total long-lived tangible assets, net of accumulated depreciation	$	27,089	$	30,116

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	12 Months Ended
Net Income (Loss) Per Share	Dec. 31, 2014
Net Income (Loss) Per Common Share
Net Income (Loss) Per Common 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 any outstanding stock options, unvested restricted stock, any unvested PSUs for which the performance conditions have been satisfied at the reporting date, 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 computation of basic and diluted net income (loss) per share was:

		For the Years Ended December 31,
		2014		2013		2012
	Numerator:
	Net income (loss)	$	27,143	$	15,755	$	(15,898	)


	Denominator:
	Weighted average shares outstanding		17,180		18,097		17,466
	Effect of dilutive securities:
	Common stock options		267		153		—
	Restricted stock		95		67		—
	ESPP		19		17		—

	Diluted shares outstanding		17,561		18,334		17,466


	Basic net income (loss) per common share	$	1.58	$	0.87	$	(0.91	)


	Diluted net income (loss) per common share	$	1.55	$	0.86	$	(0.91	)


	Anti-dilutive shares excluded from the determination of diluted net income (loss) per share		2,331		3,163		2,697

Selected_Quarterly_Data_Unaudi

Selected Quarterly Data (Unaudited)	12 Months Ended
Selected Quarterly Data (Unaudited)	Dec. 31, 2014
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,
	2014
	Revenue		$	36,835		$	36,189		$	35,676		$	35,213
	Gross profit		$	34,504		$	33,729		$	32,374		$	32,211
	Net income			14,311			7,015			3,869			1,948
	Net income		$	14,311	-1	$	7,015		$	3,869		$	1,948
	Basic earnings per share		$	0.83	-1	$	0.41		$	0.23		$	0.11
	Diluted earnings per share		$	0.81	-1	$	0.41		$	0.22		$	0.11
	2013
	2013
	Revenue		$	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			17,326
	Net income (loss)		$	(1,532	)	$	(2,027	)	$	1,988	-2	$	17,326	-3
	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


	-1	Reflects restated amounts correcting an understatement of income tax benefit relating to the Company's special one-time transfer of certain Japan and Taiwan intellectual property licensing rights to the US on January 1, 2014. Refer to the amended Quarterly Report on Form 10-Q/A for the quarter ended March 31, 2014.
	-2	Includes an impairment charge of $2,820 relating to certain intangibles (refer to Note 7, "Goodwill and Other Intangibles"). Also, includes a gain of $5,300 recorded within operating expenses relating to changes in the fair value of contingent consideration.
	-3	Includes a $7,919 tax benefit as a result of a release of the valuation allowance on US federal deferred tax assets (refer to Note 11, "Income Taxes"). Also, includes a gain of $700 recorded within operating expenses relating to changes in the fair value of contingent consideration.

SCHEDULE_IIVALUATION_AND_QUALI

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS	Dec. 31, 2014
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)
	2014		$	1,388	$	29	$	1,274	$	143
	2013		$	679	$	709	$	—	$	1,388
	2012		$	251	$	460	$	32	$	679
	Deferred tax assets—valuation allowance:(2)
	2014		$	579	$	—	$	85	$	494
	2013		$	8,702	$	—	$	8,123	$	579
	2012		$	817	$	7,885	$	—	$	8,702


	-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, 2014
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 (US 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. All intercompany accounts and transactions have been eliminated.

Use of Estimates	Use of Estimates
	The preparation of financial statements in accordance with US 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 as of 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, valuations of goodwill, other intangible assets, and long-lived assets, stock-based compensation, income taxes and business combinations. The Company bases its estimates on historical and anticipated results, trends and 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.

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 technologies to consumer electronics products manufacturers in the US 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.
	Two customers accounted for 15% and 14%, respectively, of revenues for the year ended December 31, 2014. 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.
	As of December 31, 2014, one customer accounted for 42% of accounts receivable, which resulted from the normal course of business, and another customer accounted for 26% of accounts receivable, which resulted from royalty recoveries. One customer accounted for 51% of accounts receivable at December 31, 2013, which resulted largely 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 US 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:

	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 evaluates the carrying value of goodwill and indefinite-lived intangibles for impairment on an annual basis as of October 31 of each year at the reporting unit level, or more frequently if events or circumstances indicate that the goodwill and other intangibles might be impaired. 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. The Company operates in one reportable and operating segment and has two separate reporting units: (i) the Phorus business, and (ii) the rest of the business.
	To test goodwill for impairment, the Company performs a qualitative assessment (Step 0) to determine whether further impairment testing is necessary. Qualitative factors considered include but are not limited to general macroeconomic conditions; industry and market conditions and trends; overall financial performance and trends in cash flows or revenue; changes in strategy or customers; and changes in share price.
	If further testing is necessary, a Step 1 test is performed to evaluate the recoverability of goodwill, which 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 Step 2 and estimate the fair value of the goodwill itself and compare it to the carrying value. 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.
	Similar to goodwill, 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.
	The Company's definite-lived intangibles principally consist of customer relationships, acquired technology, contractual rights arrangements and patents, tradenames and trademarks, which are being amortized over their respective estimated useful lives. Costs incurred in securing patents and trademarks and protecting the Company's proprietary technology and brand name paid to third parties are capitalized and internal costs are expensed as incurred. 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. 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.

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. Determining whether and when these criteria have been satisfied may involve assumptions and judgments that can have a significant impact on the timing and amount of revenue that is reported.
	Revenue from licensing audio technology, trademarks and know-how is generated from licensing agreements with consumer electronics products manufacturers that pay a license fee for products manufactured or shipped. Licensees with a per-unit arrangement pay a per-unit license fee for each product manufactured or shipped, as set forth in each license agreement. Licensees report manufacturing or shipping information in the quarter subsequent to when such activity takes place. Consequently, the Company recognizes revenue from these per-unit licensing agreements 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 quarter 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.
	Certain licensees have entered into minimum guarantee arrangements, whereby licensees pay a flat fee for the right to license certain technology over the contract term. These agreements stipulate 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 recognizes the minimum, or flat fee amount, on these agreements as revenue ratably over the contract term. 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 have under-reported the amount of royalties owed under a license agreement or who utilize its intellectual property without a license. As a result of these activities, from time to time, the Company may recognize royalty revenues that relate to infringements or under-reporting 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 are recognized as revenue in future periods when the applicable revenue recognition criteria are met. Typically, deferred revenues arise from flat fee or minimum guarantee arrangements that allow licensees to manufacture an unlimited or specified 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, 2014, 2013 and 2012, withholding taxes were $3,377, $5,610, and $4,970, respectively. Withholding taxes were lower in 2014 compared to the prior years due to the transfer of Japan intellectual property licensing rights from Ireland to the US in 2014.

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 all the Company's wholly-owned subsidiaries is the US dollar. Certain subsidiaries have monetary assets and liabilities that are denominated in a currency that is different than the functional currency. The gains and losses resulting from this remeasurement and translation of monetary assets denominated in a currency that is different than the functional currency are reflected in the determination of net income (loss) and included in interest and other income (expense), net.

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 has been comprised mostly of foreign currency translation, as a result of certain wholly-owned subsidiaries having a non-US dollar functional currency in prior years.

Advertising Expenses	Advertising Expenses
	Advertising and promotional costs are expensed as incurred and amounted to $4,489, $4,408, and $3,584, for the years ended December 31, 2014, 2013 and 2012, respectively.

Stock Repurchases	Stock Repurchases
	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.

Stock - Based Compensation	Stock-Based Compensation
	The Company accounts for stock-based compensation using the fair value recognition approach. The Company uses the Black-Scholes option-pricing model to determine the fair value of any stock options granted, which requires the Company to make estimates regarding dividend yields on its common stock, expected volatility in the price of its common stock, risk free interest rates, forfeiture rates and the expected life of the option. The fair value of any restricted stock awarded is calculated using the closing market price of the Company's common stock on the date of grant. The Company recognizes these compensation costs net of the applicable forfeiture rates and for only those shares expected to vest on a straight-line basis over the requisite service period of each award, which is generally four years. The Company estimates the forfeiture rate based on its historical experience.

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 primarily 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. 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 Pronouncements
	In July 2013, the Financial Accounting Standards Board (FASB) 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 ASU 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. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company fully adopted this ASU in the first quarter of 2014. As of December 31, 2014, $2,052 of unrecognized tax benefits were recorded as a reduction to non-current deferred tax assets on the consolidated balance sheet.
	In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)." This ASU outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. For public entities, this ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. Early adoption is not permitted. Entities have the option of applying either a full retrospective approach or a modified approach. The Company is evaluating the potential impact of adoption of this ASU on its consolidated financial statements.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
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
Cash, Cash Equivalents and Investments (Tables)	Dec. 31, 2014
Cash, Cash Equivalents and Investments
Schedule of cash, cash equivalents and investments

		As of December 31,
		2014		2013
	Cash and cash equivalents:
	Cash	$	17,899	$	26,374
	Money market accounts		81,536		39,651

	Total cash and cash equivalents	$	99,435	$	66,025


	Short-term investments:
	US government and agency securities		—		5,004

	Total short-term investments	$	—	$	5,004

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2014
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, 2014
	Contingent consideration(1)		$	(900	)	$	—		$	—	$	(900	)
	As of December 31, 2013
	As of December 31, 2013
	US government and agency securities		$	5,004		$	—		$	5,004	$	—
	Contingent consideration(2)		$	(1,000	)	$	—		$	—	$	(1,000	)


	-1	The full balance was classified in accrued expenses on the consolidated balance sheet.
	-2	$400 and $600 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

			For the Years Ended
			December 31,
			2014			2013
	Balance, beginning of year		$	(1,000	)	$	(7,500	)
	Payment of contingent consideration(1)			500			500
	Change in fair value of contingent consideration(2)			(400	)		6,000

	Balance, end of year		$	(900	)	$	(1,000	)




	-1	This resulted from achievement of the first and second milestones of the Phorus contingent consideration in the fourth quarters of 2014 and 2013, respectively.
	-2	These changes are reflected within operating expenses in the consolidated statements of operations.

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
Property and Equipment (Tables)	Dec. 31, 2014
Property and Equipment
Schedule of property and equipment

		As of December 31,
		2014			2013
	Land	$	6,600		$	6,600
	Building and improvements		21,407			21,433
	Machinery and equipment		5,520			5,264
	Office furniture and fixtures		7,988			7,560
	Leasehold improvements		4,418			4,409
	Software		7,188			6,738

			53,121			52,004
	Less: Accumulated depreciation		(26,032	)		(21,888	)

	Property and equipment, net	$	27,089		$	30,116

Business_Combination_Tables

Business Combination (Tables) (SRS)	12 Months Ended
Business Combination (Tables) (SRS)	Dec. 31, 2014
SRS
Business Combination
Schedule of purchase price for allocation

		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_Intangible_1

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
Goodwill and Other Intangible Assets (Tables)	Dec. 31, 2014
Goodwill and Other Intangible Assets
Summary of changes in goodwill

			Goodwill
	Balance at December 31, 2012 and 2013		$	48,418
	Increase related to business acquisitions			1,938

	Balance at December 31, 2014		$	50,356





Summary of the Company's other intangible assets

					As of December 31, 2014							As of December 31, 2013
			Weighted		Gross		Accumulated			Net		Gross		Accumulated			Net
			Average		Amount(1)		Amortization			Carrying		Amount(1)		Amortization			Carrying
			Life (Years)							Amount							Amount
	Acquired technology			6	$	18,483	$	(10,575	)	$	7,908	$	16,763	$	(8,193	)	$	8,570
	Customer relationships			8		45,801		(14,525	)		31,276		45,590		(8,792	)		36,798
	Non-compete			2		492		(402	)		90		384		(350	)		34
	Tradename			5		3,261		(1,581	)		1,680		3,000		(1,002	)		1,998
	Patents			5		3,405		(1,233	)		2,172		3,036		(953	)		2,083
	Trademarks			10		785		(357	)		428		669		(297	)		372
	Contractual Rights			5		6,288		(1,299	)		4,989		—		—			—

	Total amortizable intangible assets					78,515		(29,972	)		48,543		69,442		(19,587	)		49,855
	IPR&D												370					370
	IPR&D					—		—			—		370		—			370

	Total intangible assets				$	78,515	$	(29,972	)	$	48,543	$	69,812	$	(19,587	)	$	50,225



	-1	Includes write-downs of $2,304 for acquired 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 intangible assets

			For the Years Ended
			December 31,
			2014		2013		2012
	Cost of revenue		$	8,793	$	8,848	$	4,151
	Operating expenses			1,024		1,001		641

	Total amortization of intangible assets		$	9,817	$	9,849	$	4,792




Schedule of expected future amortization of intangible assets

	Years Ending December 31,		Estimated
			Amortization
			Expense
	2015		$	10,962
	2016			10,240
	2017			9,673
	2018			7,844
	2019			6,584
	2020 and thereafter			3,240

	Total		$	48,543

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
Accrued Expenses (Tables)	Dec. 31, 2014
Accrued Expenses
Schedule of accrued expenses

		As of December 31,
		2014		2013
	Accrued payroll and related benefits	$	13,893	$	9,073
	Contingent consideration		900		400
	Other		1,968		2,669

	Total accrued expenses	$	16,761	$	12,142

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2014
Commitments and Contingencies
Schedule of minimum future rental payments under non-cancelable operating leases

	Years Ending December 31,
	2015	$	2,267
	2016		1,911
	2017		1,066
	2018		778
	2019		650
	2020 and thereafter		1,279

		$	7,951

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2014
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,
		2014			2013			2012
	US	$	6,032		$	(18,019	)	$	(22,498	)
	Foreign		10,105			25,140			14,265

	Income (loss) before income taxes	$	16,137		$	7,121		$	(8,233	)


	Current:
	Federal	$	498		$	(1,135	)	$	(2,289	)
	State		(918	)		19			(1,080	)
	Foreign		4,154			7,331			5,642

	Total current		3,734			6,215			2,273

	Deferred:
	Federal		(15,127	)		(13,301	)		2,974
	State		568			(1,133	)		971
	Foreign		(181	)		(415	)		1,447

	Total deferred		(14,740	)		(14,849	)		5,392

	Provision (benefit) for income taxes	$	(11,006	)	$	(8,634	)	$	7,665




Schedule of components of temporary differences that gave rise to deferred income tax

		As of December 31,
		2014			2013
	Deferred tax assets:
	Accrued revenues	$	7,899		$	1,496
	Net operating loss carryforwards		559			5,364
	Credit carryforwards, net of unrecognized tax benefits		14,418			13,800
	Depreciation and amortization		933			1,737
	Stock-based compensation		8,893			8,026
	Accruals, reserves and other		2,084			1,236
	Acquired intangibles		17,424			2,551

	Total gross deferred tax assets		52,210			34,210
	Valuation allowance		(494	)		(579	)

	Total deferred tax assets		51,716			33,631

	Deferred tax liabilities:
	Acquired intangibles		13,410			16,130
	Prepaid expenses		35			47

	Total deferred tax liabilities		13,445			16,177

	Deferred tax assets, net	$	38,271		$	17,454


	Current deferred tax assets, net	$	12,095		$	5,787
	Non-current deferred tax assets, net		26,176			11,667

	Deferred tax assets, net	$	38,271		$	17,454




Schedule of reconciliation of statutory income tax rate to effective tax rate

		For the Years Ended
		December 31,
		2014			2013			2012
	Statutory federal rate		35	%		35	%		35	%
	State income taxes, net		(0.6	)		(5.5	)		(2.1	)
	Effect of varying foreign rates		(15.5	)		(96.5	)		50.1
	Foreign withholding taxes		20.9			78.8			(60.2	)
	Unremitted earnings of foreign subsidiary		—			(3.4	)		(9.7	)
	Foreign IP transfer to US		147.4			—			—
	Amortization of acquired foreign intangibles		(103.5	)		—			—
	Non-deductible meals and entertainment		0.4			1			(0.6	)
	Stock-based compensation expense		5.1			7			(7.6	)
	Foreign tax credits		(131.4	)		—			—
	Research and development credits		(4.5	)		(11.9	)		—
	Domestic production activities deduction		(2.5	)		—			—
	Unrecognized tax benefits		6.6			8			38.3
	Tax audit settlements		(20.6	)		(11.6	)		(108.9	)
	Deferred tax asset adjustment		(2.0	)		(12.0	)		3.6
	Prepaid income taxes		(4.2	)		—			—
	Valuation allowance		—			(111.2	)		(16.4	)
	Other		1.2			1.1			(14.6	)

	Effective tax rate		(68.2	)%		(121.2	)%		(93.1	)%




Schedule of reconciliation of the gross unrecognized tax benefits

		Unrecognized
		Tax Benefits
	Balance at January 1, 2012	$	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
	Additions for tax positions of prior years		876
	Additions for tax positions of the current year		919
	Lapse of applicable statutes		(265	)

	Balance at December 31, 2014	$	11,110

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
Stock-Based Compensation (Tables)	Dec. 31, 2014
Stock-Based Compensation
Schedule of the Company's stock-based compensation costs and related income tax benefits

		For the Years Ended
		December 31,
		2014			2013			2012
	Stock-based compensation cost:
	Selling, general and administrative	$	7,819		$	8,872		$	8,940
	Research and development		2,673			2,855			2,376

	Total stock-based compensation cost	$	10,492		$	11,727		$	11,316


	Income tax benefit	$	3,070		$	4,779		$	4,611




Schedule of weighted average key assumptions used to estimate fair value of options granted

		Years Ended
		December 31,
		2014			2013			2012
	Risk free interest rate		1.1	%		0.7	%		0.6	%
	Expected lives (years)		4.3			4.2			4.0
	Dividend yield		0	%		0	%		0	%
	Expected volatility		43	%		44	%		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, 2013		3,319		$	24.68
	Granted		439			21.07
	Exercised		(206	)		21.76
	Forfeited		(65	)		21.66
	Expired		(174	)		26.91

	Options outstanding at December 31, 2014		3,313		$	24.33			6.2		$	25,319


	Options exercisable at December 31, 2014		1,972		$	24.89			4.8		$	14,656


	Options vested and expected to vest at December 31, 2014		3,289		$	24.34			6.2		$	25,081




Summary of restricted stock activity

		Number of			Weighted-
		Shares			Average
					Grant-Date
					Fair Value
	Unvested stock at December 31, 2013		306		$	26.14
	Granted		358			20.54
	Vested		(130	)		26.81
	Forfeited		(46	)		22.12

	Unvested stock at December 31, 2014		488		$	22.27




Schedule of weighted average key assumptions used to estimate fair value of shares granted

		Years Ended
		December 31,
		2014			2013			2012
	Risk free interest rate		0.1	%		0.2	%		0.2	%
	Expected lives (years)		1.2			1.2			0.7
	Dividend yield		0	%		0	%		0	%
	Expected volatility		39	%		52	%		61	%

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	12 Months Ended
Segment and Geographic Information (Tables)	Dec. 31, 2014
Geographic Information
Schedule of revenue by geographical area, based on the customer's country of domicile

		For the Years Ended December 31,
		2014		2013		2012
	US	$	21,227	$	12,998	$	11,693
	Japan		57,156		42,256		41,203
	South Korea		33,952		45,051		27,110
	China		16,126		12,690		7,395
	Other international		15,452		12,153		13,248

	Total international		122,686		112,150		88,956

	Total revenues	$	143,913	$	125,148	$	100,649




Schedule of net long-lived tangible assets, net of accumulated depreciation, by geographic area

		As of December 31,
		2014		2013
	US	$	25,494	$	27,979
	International		1,595		2,137

	Total long-lived tangible assets, net of accumulated depreciation	$	27,089	$	30,116

Net_Income_Loss_Per_Common_Sha

Net Income (Loss) Per Common Share (Tables)	12 Months Ended
Net Income (Loss) Per Common Share (Tables)	Dec. 31, 2014
Net Income (Loss) Per Common Share
Computation of basic and diluted net income (loss) per share

		For the Years Ended December 31,
		2014		2013		2012
	Numerator:
	Net income (loss)	$	27,143	$	15,755	$	(15,898	)


	Denominator:
	Weighted average shares outstanding		17,180		18,097		17,466
	Effect of dilutive securities:
	Common stock options		267		153		—
	Restricted stock		95		67		—
	ESPP		19		17		—

	Diluted shares outstanding		17,561		18,334		17,466


	Basic net income (loss) per common share	$	1.58	$	0.87	$	(0.91	)


	Diluted net income (loss) per common share	$	1.55	$	0.86	$	(0.91	)


	Anti-dilutive shares excluded from the determination of diluted net income (loss) per share		2,331		3,163		2,697

Selected_Quarterly_Data_Unaudi1

Selected Quarterly Data (Unaudited) (Tables)	12 Months Ended
Selected Quarterly Data (Unaudited) (Tables)	Dec. 31, 2014
Selected Quarterly Data (Unaudited)
Schedule of selected quarterly data (unaudited)

			For the Quarter Ended
			Mar. 31,			June 30,			Sep. 30,			Dec. 31,
	2014
	Revenue		$	36,835		$	36,189		$	35,676		$	35,213
	Gross profit		$	34,504		$	33,729		$	32,374		$	32,211
	Net income			14,311			7,015			3,869			1,948
	Net income		$	14,311	-1	$	7,015		$	3,869		$	1,948
	Basic earnings per share		$	0.83	-1	$	0.41		$	0.23		$	0.11
	Diluted earnings per share		$	0.81	-1	$	0.41		$	0.22		$	0.11
	2013
	2013
	Revenue		$	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			17,326
	Net income (loss)		$	(1,532	)	$	(2,027	)	$	1,988	-2	$	17,326	-3
	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


	-1	Reflects restated amounts correcting an understatement of income tax benefit relating to the Company's special one-time transfer of certain Japan and Taiwan intellectual property licensing rights to the US on January 1, 2014. Refer to the amended Quarterly Report on Form 10-Q/A for the quarter ended March 31, 2014.
	-2	Includes an impairment charge of $2,820 relating to certain intangibles (refer to Note 7, "Goodwill and Other Intangibles"). Also, includes a gain of $5,300 recorded within operating expenses relating to changes in the fair value of contingent consideration.
	-3	Includes a $7,919 tax benefit as a result of a release of the valuation allowance on US federal deferred tax assets (refer to Note 11, "Income Taxes"). Also, includes a gain of $700 recorded within operating expenses relating to changes in the fair value of contingent consideration.

Significant_Accounting_Policie3

Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	customer	customer	customer
Sales \| Customer Concentration Risk
Concentration of business and credit risk
Number of customers accounted	2	3	2
Sales \| Customer Concentration Risk \| Customer one
Concentration of business and credit risk
Concentration risk, percentage	15.00%	21.00%	13.00%
Sales \| Customer Concentration Risk \| Customer two
Concentration of business and credit risk
Concentration risk, percentage	14.00%	12.00%	11.00%
Sales \| Customer Concentration Risk \| Customer three
Concentration of business and credit risk
Concentration risk, percentage		12.00%
Accounts Receivable \| Credit Concentration Risk \| Customer one
Concentration of business and credit risk
Concentration risk, percentage	42.00%	51.00%
Accounts Receivable \| Credit Concentration Risk \| Customer two
Concentration of business and credit risk
Concentration risk, percentage	26.00%

Significant_Accounting_Policie4

Significant Accounting Policies (Details 2)	12 Months Ended
Significant Accounting Policies (Details 2)	Dec. 31, 2014
Machinery and Equipment \| Minimum
Property and equipment
Useful lives	2 years
Machinery and Equipment \| Maximum
Property and equipment
Useful lives	5 years
Software and Software Development Costs \| Minimum
Property and equipment
Useful lives	2 years
Software and Software Development Costs \| Maximum
Property and equipment
Useful lives	7 years
Furniture and Fixtures \| Minimum
Property and equipment
Useful lives	3 years
Furniture and Fixtures \| Maximum
Property and equipment
Useful lives	7 years
Building and Building Improvements \| Maximum
Property and equipment
Useful lives	35 years

Significant_Accounting_Policie5

Significant Accounting Policies (Details 3) (USD $)	1 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	item	segment
		item
Significant Accounting Policies
Number of reportable segments		1
Number of operating segments		1
Number of reporting units identified for goodwill impairment testing	2	2
Long-Lived Assets
Impairment of long-lived assets		$0
Revenue Recognition
Withholding taxes related to licensing revenue		3,377	5,610	4,970
Advertising Expenses
Advertising and promotional cost		$4,489	$4,408	$3,584
Stock-Based Compensation
Requisite service period of each award		4 years
Patents
Long-Lived Assets
Finite-Lived Intangible Asset, Useful Life		5 years
Trademarks
Long-Lived Assets
Finite-Lived Intangible Asset, Useful Life		10 years

Significant_Accounting_Policie6

Significant Accounting Policies (Details 4) (Accounting Standards Update ("ASU") 2013-11, Restatement Adjustment, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Accounting Standards Update ("ASU") 2013-11 \| Restatement Adjustment
Recent Accounting Pronouncements
Change in unrecognized tax benefits as a reduction to federal and state deferred tax assets	$2,052

Cash_Cash_Equivalents_and_Inve2

Cash, Cash Equivalents and Investments (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash, cash equivalents and investments
Cash equivalents	$99,435	$66,025
Total short-term investments		5,004
Cash
Cash, cash equivalents and investments
Cash	17,899	26,374
Money Market Funds
Cash, cash equivalents and investments
Money market accounts	81,536	39,651
Available-for-sale Securities \| US government and agency securities
Cash, cash equivalents and investments
Total short-term investments		$5,004

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Measurements
Contingent consideration			($7,500)
Amount of contingent consideration classified in accrued expenses	900	400
Amount of contingent consideration classified in other long-term liabilities		600
Phorus
Fair Value Measurements
Discount rate (as a percent)	15.00%	17.00%
Fair Value, Measurements, Recurring \| Estimate Of Fair Value FairValue Measurement
Fair Value Measurements
Contingent consideration	-900	-1,000
Fair Value, Measurements, Recurring \| Estimate Of Fair Value FairValue Measurement \| US government and agency securities
Fair Value Measurements
Available-for-sale securities		5,004
Fair Value, Measurements, Recurring \| Fair Value, Inputs,-Level 2 \| US government and agency securities
Fair Value Measurements
Available-for-sale securities		5,004
Fair Value, Measurements, Recurring \| Fair Value, Inputs-Level 3
Fair Value Measurements
Contingent consideration	-900	-1,000
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	-1,000	-7,500
Payment of contingent consideration	500	500
Change in fair value of contingent consideration	-400	6,000
Balance at the end of the period	-900	-1,000

Property_and_Equipment_Details

Property and Equipment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property and equipment
Property and equipment, gross	$53,121	$52,004
Less: Accumulated depreciation	-26,032	-21,888
Property and equipment, net	27,089	30,116
Depreciation expense	4,587	5,550	4,833
Land
Property and equipment
Property and equipment, gross	6,600	6,600
Building and Building Improvements
Property and equipment
Property and equipment, gross	21,407	21,433
Machinery and Equipment
Property and equipment
Property and equipment, gross	5,520	5,264
Furniture and Fixtures
Property and equipment
Property and equipment, gross	7,988	7,560
Leasehold improvements
Property and equipment
Property and equipment, gross	4,418	4,409
Software and Software Development Costs
Property and equipment
Property and equipment, gross	$7,188	$6,738

Business_Combination_Details

Business Combination (Details) (USD $)	12 Months Ended			0 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 20, 2012	Jul. 05, 2012	Oct. 31, 2013
Business Combination
Increase in accounts receivable	$377	$2,474	($5,316)
Estimated Fair Value of final purchase price allocation
Goodwill	50,356	48,418	48,418
SRS
Business Combination
Aggregate consideration				124,785
Increase in accounts receivable		2,550
Increase in prepaid expenses and other current assets		303
Purchase accounting adjustments		-2,896
Decrease in deferred tax assets		-25
Increase in accounts payable		25
Decrease in accrued expenses		-93
Estimated Fair Value of final purchase price allocation
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
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
Additional information
Total acquisition and integration related costs		1,558	15,510
SRS \| IPR&D
Estimated Fair Value of final purchase price allocation
Total identifiable intangible assets		1,180
SRS \| Customer Relationships
Estimated Fair Value of final purchase price allocation
Total identifiable intangible assets		44,540
Weighted Average Estimated Useful Life		8 years
SRS \| Developed Technology
Estimated Fair Value of final purchase price allocation
Total identifiable intangible assets		7,920
Weighted Average Estimated Useful Life		6 years
SRS \| Trademarks and Trade Names
Estimated Fair Value of final purchase price allocation
Total identifiable intangible assets		2,810
Weighted Average Estimated Useful Life		5 years
Phorus
Business Combination
Purchase accounting adjustments		0
Additional information
Initial cash consideration paid					3,000
Holdback for potential indemnification matters					300
Additional consideration payable subject to the achievement of certain milestones					10,000	2,000
Selling, general and administrative \| SRS
Additional information
Total acquisition and integration related costs		1,520	13,276
Research and development \| SRS
Additional information
Total acquisition and integration related costs		$38	$2,234

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible (Details) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2014	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	item	Sep. 30, 2013	item	Dec. 31, 2013	Dec. 31, 2012
Summary of acquired intangible and other intangible assets by category
Goodwill impairment charge			$0	$0
Changes in the carrying amount of goodwill
Balance at the beginning of the period			48,418	48,418
Increase related to business acquisitions			1,938
Balance at the end of the period			50,356	48,418	48,418
Summary of acquired intangible assets by category
Gross Amount			78,515	69,442
Accumulated Amortization			-29,972	-19,587
Net Carrying Amount			48,543	49,855
IPR&D-Gross and Net				370
Gross amount of total intangible assets (Excluding Goodwill), Total			78,515	69,812
Intangible assets, net			48,543	50,225
Number of reporting units identified for goodwill impairment testing	2		2
Impairment of intangible assets		2,820		2,820
Impairment charge			0
Impairment charge for IPR&D				360
Total amortization of intangible assets			9,817	9,849	4,792
Future amortization of intangible assets
2015			10,962
2016			10,240
2017			9,673
2018			7,844
2019			6,584
2020 and thereafter			3,240
Net Carrying Amount			48,543	49,855
Developed Technology
Summary of acquired intangible assets by category
Weighted Average Life			6 years
Gross Amount			18,483	16,763
Accumulated Amortization			-10,575	-8,193
Net Carrying Amount			7,908	8,570
Impairment charge				2,304
Future amortization of intangible assets
Net Carrying Amount			7,908	8,570
Customer Relationships
Summary of acquired intangible assets by category
Weighted Average Life			8 years
Gross Amount			45,801	45,590
Accumulated Amortization			-14,525	-8,792
Net Carrying Amount			31,276	36,798
Future amortization of intangible assets
Net Carrying Amount			31,276	36,798
Non-compete
Summary of acquired intangible assets by category
Weighted Average Life			2 years
Gross Amount			492	384
Accumulated Amortization			-402	-350
Net Carrying Amount			90	34
Impairment charge				156
Future amortization of intangible assets
Net Carrying Amount			90	34
Tradenames
Summary of acquired intangible assets by category
Weighted Average Life			5 years
Gross Amount			3,261	3,000
Accumulated Amortization			-1,581	-1,002
Net Carrying Amount			1,680	1,998
Future amortization of intangible assets
Net Carrying Amount			1,680	1,998
Patents
Summary of acquired intangible assets by category
Weighted Average Life			5 years
Gross Amount			3,405	3,036
Accumulated Amortization			-1,233	-953
Net Carrying Amount			2,172	2,083
Future amortization of intangible assets
Net Carrying Amount			2,172	2,083
Trademarks
Summary of acquired intangible assets by category
Weighted Average Life			10 years
Gross Amount			785	669
Accumulated Amortization			-357	-297
Net Carrying Amount			428	372
Future amortization of intangible assets
Net Carrying Amount			428	372
Contractual Rights
Summary of acquired intangible assets by category
Weighted Average Life			5 years
Gross Amount			6,288
Accumulated Amortization			-1,299	-620
Net Carrying Amount			4,989	3,330
Future amortization of intangible assets
Net Carrying Amount			4,989	3,330
Contractual Rights \| Prepaid Expenses and Other Current Assets
Summary of acquired intangible assets by category
Net Carrying Amount				662
Future amortization of intangible assets
Net Carrying Amount				662
Contractual Rights \| Other Long Term Assets
Summary of acquired intangible assets by category
Net Carrying Amount				2,668
Future amortization of intangible assets
Net Carrying Amount				2,668
Cost of Sales
Summary of acquired intangible assets by category
Total amortization of intangible assets			8,793	8,848	4,151
Operating Expense
Summary of acquired intangible assets by category
Total amortization of intangible assets			$1,024	$1,001	$641

Accrued_Expenses_Details

Accrued Expenses (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Expenses
Accrued payroll and related benefits	$13,893	$9,073
Contingent consideration	900	400
Other	1,968	2,669
Total accrued expenses	$16,761	$12,142

Longterm_Debt_Details

Long-term Debt (Details) (USD $)	12 Months Ended	0 Months Ended	3 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 29, 2014	Dec. 31, 2014
Long-term debt
Amount repaid	$35,000
Credit Agreement
Long-term debt
Long-term debt		50,000
Number of rolling quarters	4
Debt compliance, minimum adjusted EBITDA required for four rolling quarters	32,000
Debt compliance, minimum adjusted EBITDA required for four rolling quarters prior to December 31, 2014	30,000
Debt compliance maximum leverage ratio	1.25
Debt compliance minimum liquidity requirement	35,000		35,000
Maximum security interest granted to lender in the stock of the Company's current and future foreign subsidiaries (as a percent)	65.00%
Credit Agreement \| LIBOR
Long-term debt
Basis points added to reference rate (as a percent)	1.00%
Credit Agreement \| Federal Funds Rate
Long-term debt
Basis points added to reference rate (as a percent)	0.50%
Revolver
Long-term debt
Maximum borrowing capacity		25,000
Amount outstanding	5,000		5,000
Amount borrowed		5,000
Commitment fee if an average minimum deposit equal to or greater than $10,000 thousands	0.20%
Commitment fee if an average minimum deposit less than $10,000 thousands	0.30%
Term Loan
Long-term debt
Long-term debt		25,000
Amount outstanding	20,000		20,000
Amount borrowed		25,000
Amount repaid			5,000
Repayment of principal due and payable on October 1, 2015		5,000
Repayment of principal due and payable in quarterly installments after October 1, 2015		1,250
Previously Existing Line of Credit
Long-term debt
Amount repaid		30,000
Minimum \| Credit Agreement
Long-term debt
Retaining cash and cash equivalents, after paying dividends on stock	40,000
Standby and commercial letters of credit
Long-term debt
Maximum borrowing capacity		$1,000

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Minimum future rental payments under non-cancelable operating leases
2015	$2,267
2016	1,911
2017	1,066
2018	778
2019	650
2020 and thereafter	1,279
Total	7,951
Rent expense	2,388	2,270	1,874
Commitments and Contingencies
Additional consideration payable subject to the achievement of certain milestones	6,700
Period for the payment of additional consideration subject to the achievement of certain milestones	5 years
Accrued Payments Due Under Certain Contractual Rights	1,000
Severance and related costs recorded	1,799
Severance and related costs unpaid	522
Subsequent event
Commitments and Contingencies
Period for the payment of additional consideration subject to the achievement of certain milestones	5 years
Maximum \| Subsequent event
Commitments and Contingencies
Additional consideration payable subject to the achievement of certain milestones	2,100
Phorus \| Maximum
Commitments and Contingencies
Contingent consideration due and payable at the end of 2015	$1,000

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income (loss) before income taxes
U.S.	$6,032	($18,019)	($22,498)
Foreign	10,105	25,140	14,265
Income (loss) before income taxes	16,137	7,121	-8,233
Current:
Federal	498	-1,135	-2,289
State	-918	19	-1,080
Foreign	4,154	7,331	5,642
Total current	3,734	6,215	2,273
Deferred:
Federal	-15,127	-13,301	2,974
State	568	-1,133	971
Foreign	-181	-415	1,447
Total deferred	-14,740	-14,849	5,392
Provision (benefit) for income taxes	-11,006	-8,634	7,665
Deferred tax assets:
Accrued revenues	7,899	1,496
Net operating loss carryforwards	559	5,364
Credit carryforwards, net of unrecognized tax benefits	14,418	13,800
Depreciation and amortization	933	1,737
Stock-based compensation	8,893	8,026
Accruals, reserves and other	2,084	1,236
Acquired intangibles	17,424	2,551
Total gross deferred tax assets	52,210	34,210
Valuation allowance	-494	-579
Total deferred tax assets	51,716	33,631
Deferred tax liabilities:
Acquired intangibles	13,410	16,130
Prepaid expenses	35	47
Total deferred tax liabilities	13,445	16,177
Deferred tax assets, net	38,271	17,454
Deferred tax assets, net
Current deferred tax assets, net	12,095	5,787
Non-current deferred tax assets, net	26,176	11,667
Deferred tax assets, net	$38,271	$17,454

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, 2014	Dec. 31, 2013	Dec. 31, 2012
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		$7,919
Deferred tax liability related to intellectual property rights	0		0
Stock-based compensation deductions included in tax loss carryforwards		948
Uncertain tax positions	9,701	11,246	9,701
Net tax benefit associated with a special one-time transfer of certain Japan and Taiwan intellectual property licensing rights		12,612
Amortized period of intellectual property, tax basis		15 years
Undistributed earnings of foreign subsidiaries		72,289
Deferred tax liability	16,177	13,445	16,177
Accrued interest	121	136	121
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)		-0.60%	-5.50%	-2.10%
Effect of varying foreign rates (as a percent)		-15.50%	-96.50%	50.10%
Foreign withholding taxes (as a percent)		20.90%	78.80%	-60.20%
Unremitted earnings of foreign subsidiary (as a percent)			-3.40%	-9.70%
Foreign IP transfer to US (as a percent)		147.40%
Amortization of acquired foreign intangible (as a percent)		-103.50%
Non-deductible meals and entertainment (as a percent)		0.40%	1.00%	-0.60%
Stock-based compensation expense (as a percent)		5.10%	7.00%	-7.60%
Foreign tax credits (as a percent)		-131.40%
Research and development credits (as a percent)		-4.50%	-11.90%
Domestic production activities deduction (as a percent)		-2.50%
Unrecognized tax benefits (as a percent)		6.60%	8.00%	38.30%
Tax audit settlements (as a percent)		-20.60%	-11.60%	-108.90%
Deferred tax asset adjustment (as a percent)		-2.00%	-12.00%	3.60%
Prepaid income taxes (as a percent)		-4.20%
Valuation allowance (as a percent)			-111.20%	-16.40%
Other (as a percent)		1.20%	1.10%	-14.60%
Effective tax rate (as a percent)		-68.20%	-121.20%	-93.10%
Reconciliation of the gross unrecognized tax benefits
Balance at the beginning of the period		9,580	11,057	7,263
Additions for tax positions of prior years		876	100	6,868
Additions for tax positions of the current year		919	804	427
Settlements			-2,135	-3,501
Lapse of applicable statutes		-265	-246
Balance at the end of the period	9,580	11,110	9,580	11,057
Other long-term liabilities
Income Taxes
Uncertain tax positions	1,713	9,194	1,713
Federal
Income Taxes
Operating loss carryforwards		1,601
Foreign tax credit carryforwards		10,999
R&D and other tax credit carryforwards		2,056
State
Income Taxes
Operating loss carryforwards		14,420
R&D and other tax credit carryforwards		$2,801

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock-based compensation cost
Total stock-based compensation cost	$10,492	$11,727	$11,316
Income tax benefit	3,070	4,779	4,611
Selling, general and administrative
Stock-based compensation cost
Total stock-based compensation cost	7,819	8,872	8,940
Research and development
Stock-based compensation cost
Total stock-based compensation cost	$2,673	$2,855	$2,376

StockBased_Compensation_Detail1

Stock-Based Compensation (Details 2) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 13, 2012	Aug. 31, 2014
Stock-Based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Compensation expense	$10,492	$11,727	$11,316
Common Stock Options
Stock-Based Compensation
Exercisable period	4 years
Expiration period	10 years
Compensation expense	5,040	5,507	5,153
Weighted average key assumptions
Risk free interest rate (as a percent)	1.10%	0.70%	0.60%
Expected lives	4 years 3 months 18 days	4 years 2 months 12 days	4 years
Dividend yield (as a percent)	0.00%	0.00%	0.00%
Expected volatility (as a percent)	43.00%	44.00%	49.00%
Weighted-average grant-date fair value of options granted (in dollars per share)	$7.66	$7.24	$10.25
Number of options
Options outstanding at the beginning of the period (in shares)	3,319,000
Granted (in shares)	439,000	724,000	924,000
Exercised (in shares)	-206,000
Forfeited (in shares)	-65,000
Expired (in shares)	-174,000
Options outstanding at the end of the period (in shares)	3,313,000	3,319,000
Options exercisable at the end of the period (in shares)	1,972,000
Options vested and expected to vest at end of the period (in shares)	3,289,000
Weighted-Average Exercise Price
Options outstanding at the beginning of the period (in dollars per share)	$24.68
Granted (in dollars per share)	$21.07
Exercised (in dollars per share)	$21.76
Forfeited (in dollars per share)	$21.66
Expired (in dollars per share)	$26.91
Options outstanding at the end of the period (in dollars per share)	$24.33	$24.68
Options exercisable at the end of the period (in dollars per share)	$24.89
Options vested and expected to vest at end of the period (in dollars per share)	$24.34
Weighted-Average Remaining Contractual Life
Options outstanding at the end of the period	6 years 2 months 12 days
Options exercisable at the end of the period	4 years 9 months 18 days
Options vested and expected to vest at end of the period	6 years 2 months 12 days
Aggregate Intrinsic Value
Options outstanding at the end of the period (in dollars)	25,319
Options exercisable at the end of the period (in dollars)	14,656
Options vested and expected to vest at end of the period (in dollars)	25,081
Additional disclosure
Intrinsic value of options exercised (in dollars)	1,438	152	1,399
Remaining unearned compensation related to unvested stock options	7,629
Period over which unrecognized compensation expense is expected to be recognized	1 year 7 months 6 days
Restricted Stock
Stock-Based Compensation
Compensation expense	3,902	3,529	3,669
Additional disclosure
Remaining unearned compensation related to restricted stock	7,692
Period over which unrecognized compensation expense is expected to be recognized	1 year 9 months 18 days
Number of Shares
Unvested stock at the beginning of the period (in shares)	306,000
Granted (in shares)	358,000
Vested (in shares)	-130,000
Forfeited (in shares)	-46,000
Unvested stock at the end of the period (in shares)	488,000	306,000
Weighted-Average Grant-Date Fair Value
Unvested stock at the beginning of the period (in dollars per share)	$26.14
Granted (in dollars per share)	$20.54	$19.95	$25.92
Vested (in dollars per share)	$26.81
Forfeited (in dollars per share)	$22.12
Unvested stock at the end of the period (in dollars per share)	$22.27	$26.14
2003 Plan
Stock-Based Compensation
Number of shares authorized for issuance	3,000,000
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 Equity Incentive Plan \| Common Stock Options
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
Employee stock purchase plan
Stock-Based Compensation
Compensation expense	$972	$871	$668
Weighted average key assumptions
Risk free interest rate (as a percent)	0.10%	0.20%	0.20%
Expected lives	1 year 2 months 12 days	1 year 2 months 12 days	8 months 12 days
Dividend yield (as a percent)	0.00%	0.00%	0.00%
Expected volatility (as a percent)	39.00%	52.00%	61.00%
2014 New Employee Incentive Plan
Stock-Based Compensation
Number of shares authorized for issuance					50,000

StockBased_Compensation_Detail2

Stock-Based Compensation (Details 3) (USD $)	12 Months Ended			0 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 27, 2011	Mar. 13, 2014
Stock-Based Compensation
Compensation expenses	$10,492	$11,727	$11,316
Performance-Based Restricted Stock Units
Stock-Based Compensation
Compensation expenses	578
Remaining unearned compensation related to restricted stock	1,110
Period over which unrecognized compensation expense is expected to be recognized	1 year 8 months 12 days
2003 Stock Plan \| Market Stock Units
Stock-Based Compensation
Performance period for vesting of shares		3 years
Number of units granted (in shares)				199,000
Aggregate grant-date fair value				5,287
Compensation expenses		$1,820	$1,826
2012 Equity Incentive Plan \| Performance-Based Restricted Stock Units
Stock-Based Compensation
Number of units granted (in shares)					134,000
Number of installments in which PSUs will vest	2
Grant-date fair value (in dollars per share)					$20.37
2012 Equity Incentive Plan \| Performance-Based Restricted Stock Units \| Minimum
Stock-Based Compensation
Number of shares of the Company's common stock upon vesting that each PSU represents the contingent right to receive	0
2012 Equity Incentive Plan \| Performance-Based Restricted Stock Units \| Maximum
Stock-Based Compensation
Number of shares of the Company's common stock upon vesting that each PSU represents the contingent right to receive	2
2012 Equity Incentive Plan \| Performance-Based Restricted Stock Units \| PSUs that will vest on February 15, 2016
Stock-Based Compensation
Vesting percentage	50.00%

Defined_Contribution_Plan_Deta

Defined Contribution Plan (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Contribution Plan
Employee contribution limit per calendar year, as a percentage of compensation	100.00%
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	$1,100	$859	$656

Common_Stock_Repurchases_Detai

Common Stock Repurchases (Details) (USD $)	11 Months Ended	23 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Feb. 28, 2014	Feb. 22, 2012
Common Stock Repurchases
Number of shares of common stock authorized to be repurchased			2,000	2,000
Shares of common stock repurchased	374
Aggregate value of shares repurchased	$7,495	$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, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Geographic information
Revenues.	$35,213	$35,676	$36,189	$36,835	$37,073	$28,159	$27,188	$32,728	$143,913	$125,148	$100,649
Long-lived tangible assets, net	27,089				30,116				27,089	30,116
US
Geographic information
Revenues.									21,227	12,998	11,693
Long-lived tangible assets, net	25,494				27,979				25,494	27,979
Japan
Geographic information
Revenues.									57,156	42,256	41,203
South Korea
Geographic information
Revenues.									33,952	45,051	27,110
China
Geographic information
Revenues.									16,126	12,690	7,395
Other international
Geographic information
Revenues.									15,452	12,153	13,248
International
Geographic information
Revenues.									122,686	112,150	88,956
Long-lived tangible assets, net	$1,595				$2,137				$1,595	$2,137

Net_Income_Loss_Per_Common_Sha1

Net Income (Loss) Per Common Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income (loss)	$1,948	$3,869	$7,015	$14,311	$17,326	$1,988	($2,027)	($1,532)	$27,143	$15,755	($15,898)
Denominator:
Weighted average shares outstanding									17,180	18,097	17,466
Weighted average diluted shares outstanding									17,561	18,334	17,466
Basic net income (loss) per common share (in dollars per share)	$0.11	$0.23	$0.41	$0.83	$0.98	$0.11	($0.11)	($0.08)	$1.58	$0.87	($0.91)
Diluted net income (loss) per common share (in dollars per share)	$0.11	$0.22	$0.41	$0.81	$0.96	$0.11	($0.11)	($0.08)	$1.55	$0.86	($0.91)
Anti-dilutive shares excluded from the determination of diluted net income (loss) per share									2,331	3,163	2,697
Common Stock Options
Denominator:
Effect on weighted average common shares outstanding from dilutive securities									267	153
Restricted Stock
Denominator:
Effect on weighted average common shares outstanding from dilutive securities									95	67
Employee stock purchase plan
Denominator:
Effect on weighted average common shares outstanding from dilutive securities									19	17

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, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Data (Unaudited)
Revenue	$35,213	$35,676	$36,189	$36,835	$37,073	$28,159	$27,188	$32,728	$143,913	$125,148	$100,649
Gross profit	32,211	32,374	33,729	34,504	34,452	25,726	24,776	30,406	132,818	115,360	96,302
Net income (loss)	1,948	3,869	7,015	14,311	17,326	1,988	-2,027	-1,532	27,143	15,755	-15,898
Basic net income (loss) per common share (in dollars per share)	$0.11	$0.23	$0.41	$0.83	$0.98	$0.11	($0.11)	($0.08)	$1.58	$0.87	($0.91)
Diluted net income (loss) per common share (in dollars per share)	$0.11	$0.22	$0.41	$0.81	$0.96	$0.11	($0.11)	($0.08)	$1.55	$0.86	($0.91)
Impairment of intangible assets						2,820				2,820
Gain recognized within operating expenses on change in fair value of contingent consideration					700	5,300			-400	6,000
Tax benefit as a result of a release of valuation allowance on U.S. federal deferred tax assets					$7,919					$7,919

SCHEDULE_IIVALUATION_AND_QUALI1

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts
Valuation and qualifying accounts
Balance at Beginning of Year	$1,388	$679	$251
Charged to Costs and Other	29	709	460
Deductions From Reserves	1,274		32
Balance at End of Year	143	1,388	679
Deferred tax assets - valuation allowance
Valuation and qualifying accounts
Balance at Beginning of Year	579	8,702	817
Charged to Costs and Other			7,885
Deductions From Reserves	85	8,123
Balance at End of Year	$494	$579	$8,702