Immersion (IMMR) 10-K 27 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 19, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'IMMR	'	'
Entity Registrant Name	'IMMERSION CORP	'	'
Entity Central Index Key	'0001058811	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	28,146,502	'
Entity Public Float	'	'	$160,429,821

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$14,136	$4,558	[1]
Short-term investments	56,976	38,988	[1]
Accounts and other receivables (net of allowances for doubtful accounts of: $9 and $134, respectively)	598	1,878	[1]
Inventories	0	141	[1]
Deferred income taxes	7,784	0	[1]
Prepaid expenses and other current assets	690	706	[1]
Total current assets	80,184	46,271	[1]
Property and equipment, net	944	1,281	[1]
Deferred income tax assets	29,066	97	[1]
Intangibles and other assets, net	381	362	[1]
Total assets	110,575	48,011	[1]
Current liabilities:	'	'
Accounts payable	682	338	[1]
Accrued compensation	4,680	2,502	[1]
Other current liabilities	1,653	1,119	[1]
Deferred revenue	8,920	3,934	[1]
Total current liabilities	15,935	7,893	[1]
Long-term deferred revenue	13,441	10,221	[1]
Other long-term liabilities	528	619	[1]
Total liabilities	29,904	18,733	[1]
Commitments and contingencies (Notes 9 and 16)	'	'	[1]
Stockholders' equity:	'	'
Common stock and additional paid-in capital - $0.001 par value; 100,000,000 shares authorized; 33,619,766 and 32,278,330 shares issued, respectively; 28,637,022 and 27,295,586 shares outstanding, respectively	198,057	186,822	[1]
Accumulated other comprehensive income	112	109	[1]
Accumulated deficit	-86,929	-127,084	[1]
Treasury stock at cost: 4,982,744 shares	-30,569	-30,569	[1]
Total stockholders' equity	80,671	29,278	[1]
Total liabilities and stockholders' equity	$110,575	$48,011	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Allowances for doubtful accounts	$9	$134	[1]
Common stock, par value	$0.00	$0.00	[1]
Common stock, shares authorized	100,000,000	100,000,000	[1]
Common stock, shares issued	33,619,766	32,278,330	[1]
Common stock, shares outstanding	28,637,022	27,295,586	[1]
Treasury stock,shares	4,982,744	4,982,744	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Revenues:	'	'		'
Royalty and license	$46,154	$28,989	[1]	$26,916	[1]
Product sales	105	1,982	[1]	2,583	[1]
Development, services, and other	1,211	1,198	[1]	1,136	[1]
Total revenues	47,470	32,169	[1]	30,635	[1]
Costs and expenses:	'	'		'
Cost of revenues (exclusive of amortization of intangibles shown separately below)	462	1,188	[1]	1,255	[1]
Sales and marketing	9,338	6,775	[1]	7,085	[1]
Research and development	10,883	8,421	[1]	8,386	[1]
General and administrative	23,104	22,464	[1]	15,749	[1]
Amortization of intangibles	79	49	[1]	39	[1]
Total costs and expenses	43,866	38,897	[1]	32,514	[1]
Operating income (loss)	3,604	-6,728	[1]	-1,879	[1]
Interest and other income	68	170	[1]	204	[1]
Income (loss) from continuing operations before provision for income taxes	3,672	-6,558	[1]	-1,675	[1]
Benefit (provision) for income taxes	36,483	-792	[1]	-1,816	[1]
Income (loss) from continuing operations	40,155	-7,350	[1]	-3,491	[1]
Discontinued operations (Note 12):	'	'		'
Gain on sales of discontinued operations, net of provision for income taxes of $0, $97 and $39, respectively	0	153	[1]	61	[1]
Net income (loss)	40,155	-7,197	[1]	-3,430	[1]
Basic net income (loss) per share:	'	'		'
Continuing operations	$1.42	($0.27)	[1]	($0.12)	[1]
Discontinued operations	$0	$0.01	[1]	$0	[1]
Total	$1.42	($0.26)	[1]	($0.12)	[1]
Shares used in calculating basic net income (loss) per share	28,190	27,735	[1]	28,564	[1]
Diluted net income (loss) per share:	'	'		'
Continuing operations	$1.37	($0.27)	[1]	($0.12)	[1]
Discontinued operations	$0	$0.01	[1]	$0	[1]
Total	$1.37	($0.26)	[1]	($0.12)	[1]
Shares used in calculating diluted net income (loss) per share	29,338	27,735	[1]	28,564	[1]
Other comprehensive income (loss), net of tax Unrealized gains (losses) on available-for-sale securities arising during period	3	-9	[1]	-2	[1]
Total other comprehensive income (loss)	3	-9	[1]	-2	[1]
Total comprehensive income (loss)	$40,158	($7,206)	[1]	($3,432)	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Consolidated_Statements_of_Ope1

Consolidated Statements of Operations and Comprehensive Income (Loss) (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Income Statement [Abstract]	'	'		'
Provision for income taxes	$0	$97	[1]	$39	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)		Total		Common Stock and Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]		Treasury Stock [Member]
In Thousands, except Share data
Beginning balance at Dec. 31, 2010		$41,780		$176,515	$120	($116,457)	[1]	($18,398)
Beginning balance, shares at Dec. 31, 2010		'		31,016,812	'	'		2,788,209
Net income (loss)	[1]	-3,430		'	'	-3,430		'
Unrealized gain (loss) on available-for-sale securities, net of taxes		-2	[1]	'	-2	'		'
Repurchase of stock		-6,450		'	'	'		-6,450
Repurchase of stock, shares		'		'	'	'		1,139,997
Issuance of stock for ESPP purchase		145		145	'	'		'
Issuance of stock for ESPP purchase, shares		'		28,702	'	'		'
Exercise of stock options		2,293		2,293	'	'		'
Exercise of stock options, shares		560,132		560,132	'	'		'
Release of restricted stock units and awards		1,323		1,323	'	'		'
Release of restricted stock units and awards, shares		'		180,384	'	'		'
Stock based compensation		2,232		2,232	'	'		'
Ending balance at Dec. 31, 2011		37,891		182,508	118	-119,887	[1]	-24,848
Ending balance, shares at Dec. 31, 2011		'		31,786,030	'	'		3,928,206
Net income (loss)	[1]	-7,197		'	'	-7,197		'
Unrealized gain (loss) on available-for-sale securities, net of taxes		-9	[1]	'	-9	'		'
Repurchase of stock		-5,721		'	'	'		-5,721
Repurchase of stock, shares		'		'	'	'		1,054,538
Issuance of stock for ESPP purchase		122		122	'	'		'
Issuance of stock for ESPP purchase, shares		'		25,628	'	'		'
Exercise of stock options		1,046		1,046	'	'		'
Exercise of stock options, shares		231,403		231,403	'	'		'
Release of restricted stock units and awards		1,299		1,299	'	'		'
Release of restricted stock units and awards, shares		'		235,269	'	'		'
Stock based compensation		1,847		1,847	'	'		'
Ending balance at Dec. 31, 2012		29,278	[1]	186,822	109	-127,084	[1]	-30,569
Ending balance, shares at Dec. 31, 2012		'		32,278,330	'	'		4,982,744
Net income (loss)		40,155		'	'	40,155	[1]	'
Unrealized gain (loss) on available-for-sale securities, net of taxes		3		'	3	'		'
Issuance of stock for ESPP purchase		198		198	'	'		'
Issuance of stock for ESPP purchase, shares		'		36,921	'	'		'
Exercise of stock options		6,393		6,393	'	'		'
Exercise of stock options, shares		956,633		956,633	'	'		'
Release of restricted stock units and awards		3,482		3,482	'	'		'
Release of restricted stock units and awards, shares		'		347,882	'	'		'
Stock based compensation		1,162		1,162	'	'		'
Ending balance at Dec. 31, 2013		$80,671		$198,057	$112	($86,929)	[1]	($30,569)
Ending balance, shares at Dec. 31, 2013		'		33,619,766	'	'		4,982,744
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Cash flows from operating activities:	'		'		'
Net income (loss)	$40,155		($7,197)	[1]	($3,430)	[1]
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'		'		'
Depreciation and amortization of property and equipment	584		654	[1]	1,128	[1]
Amortization of intangibles	79		49	[1]	39	[1]
Stock-based compensation	4,644		3,146	[1]	3,555	[1]
Allowance (recovery) for doubtful accounts	8		113	[1]	-22	[1]
Loss on disposal of equipment	11		27	[1]	-6	[1]
Gain on sales of discontinued operations	0		-153	[1]	-61	[1]
Changes in operating assets and liabilities:	'		'		'
Accounts and other receivables	1,272		-504	[1]	-567	[1]
Inventories	141		282	[1]	-17	[1]
Deferred income taxes	-36,850		0	[1]	0	[1]
Prepaid expenses and other current assets	16		-227	[1]	3,342	[1]
Other assets	-152		-54	[1]	-116	[1]
Accounts payable	341		8	[1]	-47	[1]
Accrued compensation and other current liabilities	2,788		-717	[1]	-917	[1]
Deferred revenue	8,206		-3,194	[1]	-3,574	[1]
Other long-term liabilities	-91		374	[1]	-266	[1]
Net cash provided by (used in) operating activities	21,152		-7,393	[1]	-959	[1]
Cash flows provided by (used in) investing activities:	'		'		'
Purchases of available-for-sale investments	-94,931		-43,944	[1]	-48,905	[1]
Proceeds from maturities of available-for-sale investments	77,000		54,000	[1]	49,000	[1]
Additions to intangibles	0		-100	[1]	0	[1]
Purchases of property and equipment	-234		-1,000	[1]	-169	[1]
Proceeds from sales of discontinued operations	0		250	[1]	100	[1]
Net cash provided by (used in) investing activities	-18,165		9,206	[1]	26	[1]
Cash flows provided by (used in) financing activities:	'		'		'
Issuance of common stock under employee stock purchase plan	198		122	[1]	145	[1]
Exercise of stock options	6,393		1,046	[1]	2,293	[1]
Purchases of treasury stock	0		-5,721	[1]	-6,450	[1]
Net cash provided by (used in) financing activities	6,591		-4,553	[1]	-4,012	[1]
Net increase (decrease) in cash and cash equivalents	9,578		-2,740	[1]	-4,945	[1]
Cash and cash equivalents:	'		'		'
Beginning of year	4,558	[1]	7,298	[1]	12,243	[1]
End of year	14,136		4,558	[1]	7,298	[1]
Supplemental disclosure of cash flow information:	'		'		'
Cash paid (received) for taxes	18		21	[1]	-3,302	[1]
Supplemental disclosure of noncash operating, investing, and financing activities:	'		'		'
Amounts accrued for property and equipment	24		0	[1]	775	[1]
Release of Restricted Stock Units and Awards under company stock plan	$3,482		$1,298	[1]	$1,323	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	1.   Significant Accounting Policies
	Description of Business
	Immersion Corporation (the “Company”) was incorporated in 1993 in California and reincorporated in Delaware in 1999. It is an intellectual property (“IP”) and technology licensing company focused on the creation, design, development, and licensing of innovations and technologies that allow people to use their sense of touch more fully when operating a wide variety of digital devices.
	Principles of Consolidation and Basis of Presentation
	The consolidated financial statements include the accounts of Immersion Corporation and its wholly-owned subsidiaries, Immersion Canada Inc.; Immersion International, LLC; Immersion Medical, Inc.; Immersion Japan K.K.; Immersion Ltd.; Immersion Software Ireland Ltd.; and Haptify, Inc. All intercompany accounts, transactions, and balances have been eliminated in consolidation. The Company has prepared the accompanying consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”).
	Cash Equivalents
	The Company considers all highly liquid instruments purchased with an original or remaining maturity of less than three months at the date of purchase to be cash equivalents.
	Short-term Investments
	The Company’s short-term investments consist primarily of U.S treasury bills and government agency securities purchased with an original or remaining maturity of greater than 90 days on the date of purchase. The Company classifies debt securities with readily determinable market values as “available-for-sale.” Even though the stated maturity dates of these debt securities may be one year or more beyond the balance sheet date, the Company has classified all debt securities as short-term investments as they are reasonably expected to be realized in cash or sold within one year. These investments are carried at fair market value with unrealized gains and losses considered to be temporary in nature reported as a separate component of other comprehensive income (loss) within stockholders’ equity.
	The Company recognizes an impairment charge in the consolidated statement of operations when a decline in value is judged to be other than temporary based on the specific identification method. Other-than-temporary impairment charges may exist when the Company has the intent to sell the security, will more likely than not be required to sell the security, or does not expect to recover the principal.
	Property and Equipment
	Property is stated at cost and is depreciated using the straight-line method over the estimated useful life of the related asset. The estimated useful lives are typically as follows:
	Computer equipment and purchased software			3 years
	Machinery and equipment			3-5 years
	Furniture and fixtures			5 years
	Leasehold improvements are amortized over the shorter of the lease term or their estimated useful life.
	Intangible Assets
	Intangible assets with finite useful lives are amortized and intangible assets with indefinite lives are not amortized but rather are tested at least annually for impairment.
	The Company has acquired patents and other intangible assets. Costs associated with acquired patents and other intangible assets are capitalized as incurred. These costs are amortized utilizing the straight-line method, which approximates the pattern of consumption over the estimated useful lives of the respective assets, generally ten years.
	The Company also internally develops and licenses IP and software , and when possible, it protects its IP and software with patents and trademarks. During the fourth quarter 2013, the Company elected to change its method of accounting for external patent-related costs associated with its internally developed patents and trademarks. Prior to the change, the Company capitalized the external legal, filing, continuation or annuity fees associated with patent and trademark applications. These costs were amortized on a straight-line basis over their estimated economic useful lives which were generally 10 years from the date of issuance. Under the new method of accounting, external patent-related costs are expensed as incurred and classified as general and administrative expenses in our consolidated statement of operations, consistent with the classification of internal legal costs associated with internally developed patents and trademarks.
	Prior to the change in accounting method, the Company had a net intangible balance of $17.6 million associated with capitalized external patent-related costs, comprised of $10.2 million in costs related to unissued patent applications and $13.5 million in costs related to issued patents, with accumulated amortization of $6.1 million. The impact of the change in accounting method on the Company’s financial statements and disclosures is described below.
	The Company believes that this change is preferable because it will result in consistent treatment of all patent-related costs. Under the new method, both internal and external costs associated with the Company’s patent and trademark applications are expensed as incurred, thereby increasing the transparency and relevance of the financial statements. In addition, the change in method will reduce the burden to track and maintain the patent costs related to internally developed patents, and will eliminate the subjectivity and judgment involved in assessing the Company’s patent portfolio for impairment arising in part from the lengthy patent approval process. The change in method also will provide for a better comparison with the Company’s industry peers, as the predominant industry practice is to expense external patent-related costs as incurred.
	In accordance with Accounting Standards Codification (“ASC”) 250, “Accounting Changes and Error Corrections,” the change in accounting method has been retrospectively applied to all prior periods presented herein. Comparative financial statements of prior years have been adjusted to apply the new method retrospectively. As a result of the accounting change, the accumulated deficit increased $11.4 million as of December 31, 2013, from $75.5 million as of December 31, 2013 to $86.9 million as of December 31, 2013.The following tables summarize the impact on line items of the change in accounting method on the current and previously issued balance sheet as of December 31, 2013 and 2012, statements of operations for the years ended December 31, 2013, 2012, and 2011, and the statements of cash flows for the years ended December 31, 2013, 2012, and 2011.
	CONSOLIDATED BALANCE SHEET		As of December 31, 2013
	(In thousands)		Before			After			Effect of
			Change			Change			Change
	Deferred income taxes		$	7,779		$	7,784		$	5
	Deferred income tax assets		$	22,939		$	29,066		$	6,127
	Intangibles and other assets, net		$	17,979		$	381		$	(17,598	)
	Accumulated deficit		$	(75,463	)	$	(86,929	)	$	(11,466	)
	CONSOLIDATED BALANCE SHEET		As of December 31, 2012
	(In thousands)		As Previously			As			Effect of
			Reported			Adjusted			Change
	Deferred income taxes		$	165		$	0		$	(165	)
	Deferred income tax assets		$	0		$	97		$	97
	Intangibles and other assets, net		$	15,725		$	362		$	(15,363	)
	Other current liabilities		$	1,022		$	1,119		$	97
	Deferred income tax liabilities		$	165		$	0		$	(165	)
	Accumulated deficit		$	(111,721	)	$	(127,084	)	$	(15,363	)
	CONSOLIDATED STATEMENT OF OPERATIONS		Year Ended December 31, 2013
	(In thousands, except for per share amounts)		Before			After			Effect of
			Change			Change			Change
	General and administrative		$	19,193		$	23,104		$	3,911
	Amortization of intangibles		$	1,755		$	79		$	(1,676	)
	Benefit (provision) for income taxes.		$	30,351		$	36,483		$	6,132
	Income from continuing operations		$	36,258		$	40,155		$	3,897
	Net income		$	36,258		$	40,155		$	3,897
	Basic net income per share — continuing operations		$	1.29		$	1.42		$	0.13
	Basic net income per share — Total		$	1.29		$	1.42		$	0.13
	Diluted net income per share — continuing operations		$	1.24		$	1.37		$	0.13
	Diluted net income per share — Total		$	1.24		$	1.37		$	0.13
	CONSOLIDATED STATEMENT OF OPERATIONS		Year Ended December 31, 2012
	(In thousands, except for per share amounts)		As Previously			As			Effect of
			Reported			Adjusted			Change
	General and administrative		$	19,326		$	22,464		$	3,138
	Amortization of intangibles		$	1,554		$	49		$	(1,505	)
	Loss from continuing operations		$	(5,717	)	$	(7,350	)	$	(1,633	)
	Net loss		$	(5,564	)	$	(7,197	)	$	(1,633	)
	Basic and diluted net loss per share — continuing operations		$	(0.21	)	$	(0.27	)	$	(0.06	)
	Basic and diluted net loss per share — Total		$	(0.20	)	$	(0.26	)	$	(0.06	)
	CONSOLIDATED STATEMENT OF OPERATIONS		Year Ended December 31, 2011
	(In thousands, except for per share amounts)		As Previously			As			Effect of
			Reported			Adjusted			Change
General and administrative		$	12,568		$	15,749		$	3,181
Amortization of intangibles		$	1,394		$	39		$	(1,355	)
Loss from continuing operations		$	(1,665	)	$	(3,491	)	$	(1,826	)
Net loss		$	(1,604	)	$	(3,430	)	$	(1,826	)
Basic and diluted net loss per share — continuing operations		$	(0.06	)	$	(0.12	)	$	(0.06	)
Basic and diluted net loss per share — Total		$	(0.06	)	$	(0.12	)	$	(0.06	)
CONSOLIDATED STATEMENT OF CASH FLOWS		Year Ended December 31, 2013
(In thousands)		Before			After			Effect of
		Change			Change			Change
Cash flows from operating activities:
Net income		$	36,258		$	40,155		$	3,897
Amortization of intangibles		$	1,755		$	79		$	(1,676	)
Deferred income taxes		$	(30,718	)	$	(36,850	)	$	(6,132	)
Accounts payable		$	86		$	341		$	255
Accrued compensation and other current liabilities		$	2,666		$	2,788		$	122
Cash flows provided by (used in) investing activities:
Additions to Intangibles		$	(3,534	)	$	0		$	3,534
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment		$	843		$	24		$	(819	)
CONSOLIDATED STATEMENT OF CASH FLOWS		Year Ended December 31, 2012
(In thousands)		As Previously			As Adjusted			Effect of
		Reported						Change
Cash flows from operating activities:
Net loss		$	(5,564	)	$	(7,197	)	$	(1,633	)
Amortization of intangibles		$	1,554		$	49		$	(1,505	)
Accounts payable		$	(18	)	$	8		$	26
Accrued compensation and other current liabilities		$	(685	)	$	(717	)	$	(32	)
Cash flows provided by (used in) investing activities:
Additions to Intangibles		$	(3,244	)	$	(100	)	$	3,144
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment		$	442		$	0		$	(442	)
CONSOLIDATED STATEMENT OF CASH FLOWS		Year Ended December 31, 2011
(In thousands)		As Previously			As Adjusted			Effect of
		Reported						Change
Cash flows from operating activities:
Net loss		$	(1,604	)	$	(3,430	)	$	(1,826	)
Amortization of intangibles		$	1,394		$	39		$	(1,355	)
Accounts payable		$	(24	)	$	(47	)	$	(23	)
Accrued compensation and other current liabilities		$	(785	)	$	(917	)	$	(132	)
Cash flows provided by (used in) investing activities:
Additions to Intangibles		$	(3,336	)	$	0		$	3,336
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment		$	1,222		$	775		$	(447	)
Long-lived Assets
The Company evaluates its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of that asset may not be recoverable. An impairment loss would be recognized when the sum of the undiscounted future net cash flows expected to result from the use of the asset and its eventual disposition is less than its carrying amount. Measurement of an impairment loss for long-lived assets and certain identifiable intangible assets that management expects to hold and use is based on the fair value of the asset.
Revenue Recognition
The Company recognizes revenues in accordance with applicable accounting standards, including ASC 605-10-S99, “Revenue Recognition” (“ASC 605-10-S99”); ASC 605-25, “Multiple Element Arrangements” (“ASC 605-25”); and ASC 985-605, “Software-Revenue Recognition” (“ASC 985-605”). The Company derives its revenues from three principal sources: royalty and license fees, product sales, and development contracts. As described below, management judgments, assumptions, and estimates must be made and used in connection with the revenue recognized in any accounting period. Material differences may result in the amount and timing of revenue for any period based on the judgments and estimates made by management. Specifically, in connection with each transaction, the Company must evaluate whether: (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred, (iii) the fee is fixed or determinable, and (iv) collectibility is probable. The Company applies these criteria as discussed below.
	•		Persuasive evidence of an arrangement exists. For a license arrangement, the Company requires a written contract, signed by both the customer and the Company. For a stand-alone product sale, the Company requires a purchase order or other form of written agreement with the customer.
	•		Delivery has occurred. The Company delivers software and product to customers physically and also delivers software electronically. For physical deliveries not related to software, the transfer terms typically include transfer of title and risk of loss at the Company’s shipping location. For electronic deliveries, delivery occurs when the Company provides the customer access codes or “keys” that allow the customer to take immediate possession of the software.
	•		The fee is fixed or determinable. The Company’s arrangement fee is based on the use of standard payment terms which are those that are generally extended to the majority of customers. For transactions involving extended payment terms, the Company deems these fees not to be fixed or determinable for revenue recognition purposes and revenue is deferred until the fees become due and payable.
	•		Collectibility is probable. To recognize revenue, the Company must judge collectibility of the arrangement fees, which is done on a customer-by-customer basis pursuant to the credit review policy. The Company typically sells to customers with whom there is a history of successful collection. For new customers, the Company evaluates the customer’s financial condition and ability to pay. If it is determined that collectibility is not probable based upon the credit review process or the customer’s payment history, revenue is recognized when payment is received.
Royalty and license revenue — The Company licenses its patents and software to customers in a variety of industries such as mobility, gaming, automotive, and medical devices. A majority of these are variable fee arrangements where the royalties earned by the Company are based on unit or sales volumes of the respective licensees. The Company also enters into fixed license fee arrangements. The terms of the royalty agreements generally require licensees to give notification of royalties due to the Company within 30 – 45 days of the end of the quarter during which their related sales occur. As the Company is unable to reliably estimate the licensees’ sales in any given quarter to determine the royalties due to it, the Company recognizes royalty revenues based on royalties reported by licensees and when all revenue recognition criteria are met. Certain royalties are based upon customer shipments or revenues and could be subject to change and may result in out of period adjustments. The Company recognizes fixed license fee revenue for licenses to IP and software when earned under the terms of the agreements, which is generally recognized on a straight-line basis over the expected term of the license.
Development, services, and other revenue — Development, services, and other revenue are comprised of engineering services (engineering services and/or development contracts), and in limited cases, post contract customer support (“PCS”). Engineering services revenues are recognized under the proportional performance accounting method based on physical completion of the work to be performed or completed performance method. A provision for losses on contracts is made, if necessary, in the period in which the loss becomes probable and can be reasonably estimated. Revisions in estimates are reflected in the period in which the conditions become known. To date, such losses have not been significant. Revenue from PCS is typically recognized over the period of the ongoing obligation, which is generally consistent with the contractual term.
Multiple element arrangements — The Company enters into multiple element arrangements in which customers purchase time-based non-exclusive licenses that cannot be resold to others, which include a combination of software and/or IP licenses, engineering services, and in limited cases PCS. For arrangements that are software based and include software and engineering services, the services are generally not essential to the functionality of the software, and customers may purchase engineering services to facilitate the adoption of the Company’s technology, but they may also decide to use their own resources or appoint other engineering service organizations to perform these services. For arrangements that are in substance subscription arrangements, the entire arrangement fee is recognized ratably over the contract term, subject to any limitations related to extended payment terms. For arrangements involving upfront fees for services and royalties earned by the Company based on unit or sales volumes of the respective licensees, and the services are performed ratably over the arrangement or front-end loaded; the upfront fees are recognized ratably over the contract term and royalties based on unit or sales volume are recognized when they become fixed and determinable. As the Company is unable to reliably estimate the licensees’ sales in any given quarter to determine the royalties due to it, the Company recognizes per unit or sales volume driven royalty revenues based on royalties reported by licensees and when all revenue recognition criteria are met.
Product sales — The Company recognizes revenue from the sale of products and the license of associated software, if any, and expenses all related costs of products sold, once delivery has occurred and customer acceptance, if required, has been achieved. The Company typically grants to customers a warranty that guarantees the products will substantially conform to the Company’s current specifications for generally three to twelve months from the delivery date pursuant to the terms of the arrangement. Historically, warranty-related costs have not been significant.
Advertising
Advertising costs (including obligations under cooperative marketing programs) are expensed as incurred and included in sales and marketing expense. Advertising expense was as follows:
		Year ended December 31,
		2013			2012			2011
		(In thousands)
Advertising expense		$	322		$	152		$	192
Research and Development
Research and development costs are expensed as incurred. The Company has sometimes generated revenues from development contracts with commercial customers that have enabled it to accelerate its own product development efforts. Such development revenues have only partially funded the Company’s product development activities, and the Company generally retains ownership of the products developed under these arrangements. As a result, the Company classifies all development costs related to these contracts as research and development expenses.
Income Taxes
The Company uses the asset and liability method of accounting for income taxes. Under this method, income tax expense is recognized for the amount of taxes payable or refundable for the current year. In addition, deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the financial reporting and tax bases of assets and liabilities, and for operating losses and tax credit carryforwards. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized and are reversed at such time that realization is believed to be more likely than not.
Software Development Costs
Certain of the Company’s products include software. Costs for the development of new software products and substantial enhancements to existing software products are expensed as incurred until technological feasibility has been established, at which time any additional costs would be capitalized. The Company considers technological feasibility to be established upon completion of a working model of the software and the related hardware. Because the Company believes its current process for developing software is essentially completed concurrently with the establishment of technological feasibility, no costs have been capitalized to date.
Stock-based Compensation
Stock-based compensation cost is measured at the grant date based on the fair value of the award and is recognized as expense on a straight-line basis over the requisite service period, which is the vesting period. See Note 10 for further information regarding the Company’s stock-based compensation assumptions and expenses.
Comprehensive Income (Loss)
Comprehensive income (loss) includes net income (loss) as well as other items of comprehensive income or loss. The Company’s other comprehensive income (loss) consists of foreign currency translation adjustments and unrealized gains and losses on available-for-sale securities, net of tax.
Use of Estimates
The preparation of consolidated financial statements and related disclosures in accordance with 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 and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include valuation of short-term investments, income taxes including uncertain tax provisions, revenue recognition, stock-based compensation, contingent liabilities from litigation, and accruals for other liabilities. Actual results may differ materially from those estimates.
Concentration of Credit Risks
Financial instruments that potentially subject the Company to a concentration of credit risk principally consist of cash, cash equivalents, short term investments, and accounts receivable. The Company invests primarily in money market accounts and highly liquid debt instruments purchased with an original or remaining maturity of greater than 90 days on the date of purchase. Deposits held with banks may exceed the amount of insurance provided on such deposits. Generally, these deposits may be redeemed upon demand. The Company licenses technology primarily to companies in North America, Europe, and the Far East. To reduce credit risk, management performs periodic credit evaluations of its customers’ financial condition. The Company maintains reserves for estimated potential credit losses, but historically has not experienced any significant losses related to individual customers or groups of customers in any particular industry or geographic area.
Certain Significant Risks and Uncertainties
The Company operates in multiple industries and, accordingly, can be affected by a variety of factors. For example, management of the Company believes that changes in any of the following areas could have a negative effect on the Company in terms of its future financial position and results of operations: the mix of revenues; the loss of significant customers; fundamental changes in the technologies underlying the Company’s and its licensees’ products; market acceptance of the Company’s and its licensees’ products under development; development of sales channels; litigation or other claims in which the Company is involved; the ability to successfully assert its patent rights against others; the impact of changing economic conditions; the hiring, training, and retention of key employees; successful and timely completion of product and technology development efforts; and new product or technology introductions by competitors.
Fair Value of Financial Instruments
Financial instruments consist primarily of cash equivalents, short-term investments, accounts receivable and accounts payable. Cash equivalents and short term investments are stated at fair value based on quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. The recorded cost of accounts receivable and accounts payable approximate the fair value of the respective assets and liabilities.
Foreign Currency Translation
The functional currency of the Company’s foreign subsidiaries is U. S. dollars. Accordingly, gains and losses from the translation of the financial statements of the foreign subsidiaries and foreign currency transaction gains and losses are included in earnings.
Recent Accounting Pronouncements
In February 2013, the Financial Accounting Standards Board (“FASB”) ratified Accounting Standards Update (“ASU”) 2013-02 “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Comprehensive Income” (“ASU 2013-02). ASU 2013-02 requires entities to disclose additional information about items reclassified out of accumulated other comprehensive income (“AOCI”) including AOCI balances by component and significant items reclassified out of AOCI. This ASU is effective for reporting periods beginning after December 15, 2012, and is being applied prospectively. These amendments will change the manner in which the Company presents comprehensive income by reporting these additional disclosure items in the consolidated statements of operations and comprehensive loss or footnotes when they occur.
In July 2013, the FASB ratified ASU 2013-11 “Presenting an Unrecognized Tax Benefit (“UTB”) When a Net Operating Loss Carryforward Exists” (“ASU 2013-11”). ASU 2013-02 provides that an UTB, or a portion thereof, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except to the extent that a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date to settle any additional income taxes that would result from disallowance of a tax position, or the tax law does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, then the unrecognized tax benefit should be presented as a liability. This ASU is effective for reporting periods beginning after December 15, 2013, and may be applied retrospectively. The Company is required to adopt ASU 2013-11 as of January 1, 2014, and is currently evaluating the potential impact, if any, of the adoption on its consolidated results of operations and financial condition.

Fair_Value_Disclosures

Fair Value Disclosures	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures	'
	2. Fair Value Disclosures
	Cash Equivalents and Short-term Investments
	The financial instruments of the Company measured at fair value on a recurring basis are cash equivalents and short-term investments.
	The Company’s fixed income available-for-sale securities consist of high quality, investment grade securities. The Company values these securities based on pricing from pricing vendors, who may use quoted prices in active markets for identical assets (Level 1) or inputs other than quoted prices that are observable either directly or indirectly (Level 2) in determining fair value.
	The types of instruments valued based on quoted market prices in active markets include most money market securities. Such instruments are generally classified within Level 1 of the fair value hierarchy.
	The types of instruments valued based on quoted prices in markets that are less active, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency are generally classified within Level 2 of the fair value hierarchy and include most U.S. treasury securities and most investment-grade corporate commercial paper.
	The types of instruments valued based on unobservable inputs which reflect the reporting entity’s own assumptions or data that market participants would use in valuing an instrument are generally classified within Level 3 of the fair value hierarchy.
	Financial instruments measured at fair value on a recurring basis as of December 31, 2013 and December 31, 2012 are classified based on the valuation technique in the table below:
		December 31, 2013						Total
		Fair value measurements using
		Quoted Prices in		Significant		Significant
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Assets		Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	U.S. Treasury securities	$	0	$	56,976	$	0	$	56,976
	Money market funds		10,075		0		0		10,075
	Total assets at fair value	$	10,075	$	56,976	$	0	$	67,051
	The above table excludes $4.1 million of cash held in banks.
		December 31, 2012						Total
		Fair value measurements using
		Quoted Prices in		Significant		Significant
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Assets		Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	U.S. Treasury securities	$	0	$	38,988	$	0	$	38,988
	Money market funds		52		0		0		52
	Total assets at fair value	$	52	$	38,988	$	0	$	39,040
	The above table excludes $4.5 million of cash held in banks.
	Short-term Investments
		December 31, 2013
		Amortized		Gross		Gross		Fair Value
		Cost		Unrealized		Unrealized
				Holding		Holding
				Gains		Losses
		(In thousands)
	U.S. Treasury securities	$	56,966	$	10	$	0	$	56,976
	Total	$	56,966	$	10	$	0	$	56,976
		December 31, 2012
		Amortized		Gross		Gross		Fair Value
		Cost		Unrealized		Unrealized
				Holding		Holding
				Gains		Losses
		(In thousands)
	U.S. Treasury securities	$	38,980	$	8	$	0	$	38,988
	Total	$	38,980	$	8	$	0	$	38,988
	The contractual maturities of the Company’s available-for-sale securities on December 31, 2013 and December 31, 2012 were all due within one year.

Accounts_and_Other_Receivables

Accounts and Other Receivables	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Accounts and Other Receivables	'
	3.  Accounts and Other Receivables
		December 31,
		2013		2012
		(In thousands)
	Trade accounts receivable	$	320	$	1,528
	Receivables from vendors, lessor, and other		278		350
	Accounts and other receivables	$	598	$	1,878

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	4.  Inventories
		December 31,
		2013		2012
		(In thousands)
	Raw materials and subassemblies	$	0	$	138
	Finished goods		0		3
	Inventories	$	0	$	141

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Property and Equipment	'
	5.  Property and Equipment
		December 31,
		2013			2012
		(In thousands)
	Computer equipment and purchased software	$	3,595		$	3,748
	Machinery and equipment		704			654
	Furniture and fixtures		607			546
	Leasehold improvements		938			884
	Total		5,844			5,832
	Less accumulated depreciation		(4,900	)		(4,551	)
	Property and equipment, net	$	944		$	1,281

Intangibles_and_Other_Assets

Intangibles and Other Assets	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Intangibles and Other Assets	'
	6.  Intangibles and Other Assets
	Intangible amounts have been impacted by the Company’s change in accounting method for the treatment of external patent and trademark costs. The Company no longer capitalizes external legal, filing, and continuation or annuity fees associated with patent and trademark applications. Under the new method of accounting, these types of external patent-related costs are expensed as incurred and classified as general and administrative expenses in the Company’s consolidated statement of operations consistent with the treatment of internal legal expenses. See Note 1 to the consolidated financial statements for additional information regarding this change in accounting method.
		December 31,
		2013			2012
		(In thousands)
	Purchased patents	$	5,731		$	5,724
	Other assets		289			192
	Gross intangibles and other assets		6,020			5,916
	Accumulated amortization of purchased patents		(5,639	)		(5,554	)
	Intangibles and other assets, net	$	381		$	362
	The Company amortizes its intangible assets related to purchased patents over their estimated useful lives, generally 10 years from the purchase date. Amortization of intangibles was as follows:
		Year ended December 31,
		2013			2012			2011
		(In thousands)
	Amortization of Intangibles	$	79		$	49		$	39
	The table below includes estimated remaining annual amortization expense for purchased patents as of December 31, 2013.
		Estimated
		Amortization
		Expense
		(In thousands)
	2014	$	67
	2015		20
	2016		5
	Total	$	92

Other_Current_Liabilities

Other Current Liabilities	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Other Current Liabilities	'
	7.  Other Current Liabilities
			December 31,
			2013		2012
			(In thousands)
					(1) as adjusted
	Accrued legal		$	780	$	410
	Income taxes payable			41		30
	Deferred income taxes			0		97
	Other current liabilities			832		582
	Total other current liabilities		$	1,653	$	1,119
		-1	See Note 1 “Significant Accounting Policies — Intangible Assets” of Notes to Consolidated Financial Statemements

Longterm_Deferred_Revenue

Long-term Deferred Revenue	12 Months Ended
	Dec. 31, 2013
Deferred Revenue Disclosure [Abstract]	'
Long-term Deferred Revenue	'
	8.  Long-term Deferred Revenue
	Long-term deferred revenue consisted of the following:
		December 31,
		2013		2012
		(In thousands)
	Deferred revenue for Sony Computer Entertainment	$	12,840	$	9,636
	Other deferred revenue		601		585
	Long-term deferred revenue	$	13,441	$	10,221
	Deferred revenue for Sony Computer Entertainment represents deferred license revenue where payments have been received in advance of revenue recognition.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments	'
	9.  Commitments
	The Company leases several of its facilities under noncancelable operating lease arrangements that expire at various dates through 2018.
	The Company’s current lease for its primary facilities of approximately 33,000 square feet in San Jose, California expires in December 2016 and can be extended to December 2021.
	On September 16, 2011, the Company entered into a Lease Termination Agreement effective as of December 31, 2011 with respect to the termination of the prior lease for its facilities of approximately 48,000 square feet in San Jose, California which was scheduled to expire in June 2014. Pursuant to that agreement, the Company was paid a move incentive of $350,000, for vacating the premises which occurred in December 2011. The move incentive along with a write off of deferred rent of $294,000 was credited to rent expense in 2011.
	Minimum future lease payments obligations are as follows:
		Operating Leases
		(In thousands)
	2014	$	928
	2015		781
	2016		659
	2017		165
	2018		167
	Total	$	2,700
	Rent expense was as follows:
		Year ended December 31,
		2013		2012		2011
		(In thousands)
	Rent expense	$	549	$	550	$	30

Stockbased_Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-based Compensation	'
	10.  Stock-based Compensation
	The Company’s equity incentive program is a long-term retention program that is intended to attract, retain, and provide incentives for talented employees, consultants, officers, and directors and to align stockholder and employee interests. The Company may grant options, stock appreciation rights, restricted stock, restricted stock units (“RSUs”), performance shares, performance units, and other stock-based or cash-based awards to employees, officers, directors, and consultants. Under these programs, stock options may be granted at prices not less than the fair market value on the date of grant for stock options. These options generally vest over 4 years and expire from 5 to 10 years from the date of grant. Restricted stock generally vests over one year. RSUs generally vest over 3 years. Awards granted other than an option or stock appreciation right shall reduce the common stock shares available for grant by 1.75 shares for every share issued.
		December 31,
		2013
	Common stock shares available for grant		1,811,121
	Common stock options outstanding		3,227,167
	Restricted stock awards outstanding		44,000
	Restricted stock units outstanding		668,056
	Employee Stock Purchase Plan
	The Company has an Employee Stock Purchase Plan (“ESPP”). Under the ESPP, eligible employees may purchase common stock through payroll deductions at a purchase price of 85% of the lower of the fair market value of the Company’s stock at the beginning of the offering period or the purchase date. Participants may not purchase more than 2,000 shares in a six-month offering period or purchase stock having a value greater than $25,000 in any calendar year as measured at the beginning of the offering period. A total of 1,000,000 shares of common stock have been reserved for issuance under the ESPP. As of December 31, 2013, 519,440 shares had been purchased since the inception of the ESPP in 1999. Under ASC 718-10, the ESPP is considered a compensatory plan and the Company is required to recognize compensation cost related to the fair value of the award purchased under the ESPP. Shares purchased under the ESPP for the year ended December 31, 2013 are listed below. Shares purchased under the ESPP for the year ended December 31, 2012 are 25,628. The intrinsic value listed below is calculated as the difference between the market value on the date of purchase and the purchase price of the shares.
		Year Ended
		December 31,
		2013
	Shares purchased under ESPP		36,921
	Average price of shares purchased under ESPP	$	5.36
	Intrinsic value of shares purchased under ESPP	$	210,984
	Summary of Stock Options
	The following table sets forth the summary of option activity under the Company’s stock option plans for the years ended December 31, 2013, 2012, and 2011:
		Number			Weighted			Weighted				Aggregate
		of Shares			Average			Average				Intrinsic
					Exercise Price			Fair Value				Value
								Of Options				of Options
								Granted				Exercised
												(In  thousands)
	Outstanding at January 1, 2011		4,000,526		$	6.26
	Granted		429,963			7.11		$	4.07
	Exercised		(560,132	)		4.09						$	2,485
	Cancelled		(602,519	)		6.99
	Outstanding at December 31, 2011		3,267,838			6.61
	Granted		425,150			6.1			3.35
	Exercised		(231,403	)		4.52							443
	Cancelled		(305,954	)		7.1
	Outstanding at December 31, 2012		3,155,631			6.65
	Granted		1,058,700			10.2			5.63
	Exercised		(956,633	)		6.68							5,774
	Cancelled		(30,531	)		8.75
	Outstanding at December 31, 2013		3,227,167			7.78
	The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted price of the Company’s common stock for the options that were in-the-money.
	Information regarding stock options outstanding at December 31, 2013, 2012, and 2011 is summarized below:
		Number of			Weighted			Weighted				Aggregate
		Shares			Average			Average				Intrinsic
					Exercise			Remaining				Value
					Price			Contractual				(In millions)
								Life (years)
	December 31, 2011
	Options outstanding		3,267,838		$	6.61			5.53			$	1.3
	Options vested and expected to vest using estimated forfeiture rates		3,151,950			6.62			5.44				1.3
	Options exercisable		2,377,683			6.99			4.61				0.8
	December 31, 2012
	Options outstanding		3,155,631		$	6.65			5.24			$	3.5
	Options vested and expected to vest using estimated forfeiture rates		3,019,979			6.67			5.17				3.4
	Options exercisable		2,329,987			6.91			4.69				2.5
	December 31, 2013
	Options outstanding		3,227,167		$	7.78			5.46			$	9.9
	Options vested and expected to vest using estimated forfeiture rates		2,994,044			7.61			5.41				9.6
	Options exercisable		1,774,546			6.67			4.95				7.5
	Additional information regarding options outstanding as of December 31, 2013 is as follows:
		Options Outstanding						Options Exercisable
	Range of	Number		Weighted	Weighted			Number		Weighted
	Exercise	Outstanding		Average	Average			Exercisable		Average
	Prices			Remaining	Exercise					Exercise
				Contractual	Price					Price
				Life (Years)
$  2.70 - $3.81	25,630		5.2	$	2.84		25,630		$	2.84
3.85 - 3.85	600,000		5.87		3.85		600,000			3.85
4.17 - 6.11	417,541		4.97		5.49		335,700			5.49
6.12 - 6.39	378,000		5.55		6.2		145,265			6.18
6.41 - 8.61	437,184		4.77		7.48		361,832			7.58
8.71 - 9.20	153,712		3.92		9.13		122,119			9.11
9.53 - 9.53	850,000		6.18		9.53		0			0
10.24 - 14.80	250,100		5.72		13.79		69,000			14.02
15.12 - 15.12	15,000		3.62		15.12		15,000			15.12
16.57 - 16.57	100,000		3.74		16.57		100,000			16.57
$2.70 - $16.57	3,227,167		5.46	$	7.78		1,774,546		$	6.67
Summary of Restricted Stock Units
RSU activity for the years ended December 31, 2013, 2012, and 2011 was as follows:
	Number			Weighted			Fair Value
	of Shares			Average			of Released
				Grant Date			RSU’s
				Fair Value			(In thousands)
Outstanding at January 1, 2011		417,923
Awarded		243,908		$	6.61
Released		(159,384	)				$	1,163
Forfeited		(94,682	)
Outstanding at December 31, 2011		407,765
Awarded		555,911			6.64
Released		(203,519	)					1,128
Forfeited		(51,506	)
Outstanding at December 31, 2012		708,651
Awarded		294,150			7.12
Released		(303,882	)					2,806
Forfeited		(30,863	)
Outstanding at December 31, 2013		668,056
Information regarding RSU’s at December 31, 2013, 2012, and 2011 is summarized below:
	Number of			Weighted			Aggregate				Fair Value
	Shares			Average			Intrinsic				(In millions)
				Remaining			Value
				Contractual			(In millions)
				Life (years)
December 31, 2011
RSUs outstanding		407,765			0.95		$	2.1			$	2.1
RSUs vested and expected to vest using estimated forfeiture rates		336,454			0.92		$	1.7
December 31, 2012
RSUs outstanding		708,651			1.09		$	4.9			$	4.9
RSUs vested and expected to vest using estimated forfeiture rates		588,170			1.05		$	4
December 31, 2013
RSUs outstanding		668,056			0.91		$	6.9			$	6.9
RSUs vested and expected to vest using estimated forfeiture rates		583,711			0.89		$	6.1
The aggregate intrinsic value is calculated as the market value as of the end of the reporting period.
Summary of Restricted Stock Awards
Restricted stock award activity for the years ended December 31, 2013, 2012, and 2011 was as follows:
	Number			Weighted			Total
	of Shares			Average			Fair
				Grant Date			Value of
				Fair Value			Awards
							Released
							(In thousands)
Outstanding at January 1, 2011		18,000		$	5.59
Awarded		30,000			6.61
Released		(21,000	)		5.74		$	159
Forfeited		(9,000	)		6.61
Outstanding at December 31, 2011		18,000			6.61
Awarded		57,750			5.7
Released		(31,750	)		6.72			171
Forfeited		0
Outstanding at December 31, 2012		44,000			5.34
Awarded		44,000			14.09
Released		(44,000	)		5.34			676
Forfeited		0
Outstanding at December 31, 2013		44,000			14.09
Stock-based Compensation
Valuation and amortization method — The Company uses the Black-Scholes-Merton option pricing model (“Black-Scholes model”), single-option approach to determine the fair value of stock options and ESPP shares. All share-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods. Stock-based compensation expense recognized at fair value includes the impact of estimated forfeitures. The Company estimates future forfeitures at the date of grant and revises the estimates if necessary, in subsequent periods if actual forfeitures differ from these estimates. The determination of the fair value of share-based payment awards on the date of grant using an option pricing model is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include actual and projected employee stock option exercise behaviors that impact the expected term, the Company’s expected stock price volatility over the term of the awards, risk-free interest rate, and expected dividends.
Expected term — The Company estimates the expected term of options granted by calculating the average term from the Company’s historical stock option exercise experience. The expected term of ESPP shares is the length of the offering period. The Company used the simplified method approved by the SEC to determine the expected term for options granted prior to December 31, 2007.
Expected volatility — The Company estimates the volatility of its common stock taking into consideration its historical stock price movement and its expected future stock price trends based on known or anticipated events.
Risk-free interest rate — The Company bases the risk-free interest rate that it uses in the option pricing model on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term on the options.
Expected dividend — The Company does not anticipate paying any cash dividends in the foreseeable future and therefore uses an expected dividend yield of zero in the option-pricing model.
Forfeitures — The Company is required to estimate future forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and records stock-based compensation expense only for those awards that are expected to vest.
The assumptions used to value option grants and shares under the ESPP are as follows:
	Options					Employee Stock Purchase Plan
	2013		2012	2011		2013	2012		2011
Expected life (in years)	4.9		4.5	4.5		0.5	0.5		0.5
Interest rate	0.80%		0.70%	0.80%		0.10%	0.10%		0.20%
Volatility	70%		70%	72%		67%	62%		45%
Dividend yield	0.00%		0.00%	0.00%		0.00%	0.00%		0.00%
Total stock-based compensation recognized in the consolidated statements of operations is as follows:
	Year Ended December 31,
	2013			2012			2011
Income Statement Classifications	(In thousands)
Sales and marketing	$	747		$	547		$	526
Research and development		1,040			756			825
General and administrative		2,857			1,843			2,204
Total	$	4,644		$	3,146		$	3,555
As of December 31, 2013, there was $6.8 million of unrecognized compensation cost, adjusted for estimated forfeitures, related to non-vested stock options, restricted stock awards and RSU’s granted to the Company’s employees and directors. This cost will be recognized over an estimated weighted-average period of approximately 3.31 years for options, 0.43 years for restricted stock awards and 1.57 years for RSU’s. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Stockholders' Equity	'
	11.  Stockholders’ Equity
	Comprehensive Income (Loss)
	The changes in accumulated other comprehensive income (loss) are included in the table below.
		Year Ended December 31, 2013
		Unrealized Gains		Foreign		Total
		and Losses on		Currency
		Available-for Sale		Items
		Securities
		(In thousands)
	Beginning balance	$	8	$	101	$	109
	Other comprehensive income (loss) before reclassifications		3		0		3
	Amounts reclassified from accumulated other comprehensive income (loss)		0		0		0
	Net current period other comprehensive income (loss)		3		0		3
	Ending Balance	$	11	$	101	$	112
	Stock Repurchase Program
	On November 1, 2007, the Company announced its Board of Directors’ authorized the repurchase of up to $50 million of the Company’s common stock. The Company may repurchase its stock for cash in the open market in accordance with applicable securities laws. The timing of and amount of any stock repurchase will depend on share price, corporate and regulatory requirements, economic and market conditions, and other factors. The stock repurchase authorization has no expiration date, does not require the Company to repurchase a specific number of shares, and may be modified, suspended, or discontinued at any time.
	During the year ended December 31, 2011, the Company repurchased 1,139,997 shares for $6,450,000 at an average cost of $5.66 net of transaction costs through open market repurchases. During the year ended December 31, 2012, the Company repurchased 1,054,538 shares for $5,721,000 at an average cost of $5.43 net of transaction costs through open market repurchases. These amounts are classified as treasury stock on the Company’s consolidated balance sheet. There were no stock repurchases in 2013 under this Stock Repurchase Program, but the program currently remains available with approximately $19.4 million that may yet be purchased under it.

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]	'
Discontinued Operations	'
	12.  Discontinued Operations
	During 2009, the Company sold all of its 3D product line including inventory, fixed assets, and intangibles and recorded gains on the sale of discontinued operations of $187,000 at the time of the sales. The consideration for the sales was $2.7 million in the form of cash of $320,000 and notes receivable of $2.4 million, for which the proceeds are being recognized when they are received. The Company abandoned all other 3D operations. Accordingly, the operations of the 3D product line were classified as discontinued operations, net of income tax, in the consolidated statement of operations for all periods presented. The assets sold consisted primarily of intangible assets that had no carrying value on the Company’s books at the time of sale. In the years ended December 31, 2013, 2012, and 2011 the Company recorded gains on sales of discontinued operations net of tax of $0, $153,000 and $61,000 respectively, from the original sale and payments on notes from the sale of the 3D product line.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	13.  Income Taxes
	Income tax benefit (provisions) from continuing operations consisted of the following:
			Years Ended December 31,
			2013			2012			2011
			(In thousands)
						(1) as adjusted			(1) as adjusted
	Income (loss) from continuing operations before benefit (provision) for income taxes		$	3,672		$	(6,558)		$	(1,675	)
	Benefit (provision) for income taxes			36,483			-792			(1,816	)
	Effective tax rate			(993.5	)%		(12.1	)%		(108.4	)%
	(1) See Note 1 “Significant Accounting Policies — Intangible Assets” of Notes to Consolidated Financial Statements.
	The 2013 benefit for income tax resulted primarily from the partial release of our valuation allowance, described more fully below. The 2012 and 2011 provision for income tax resulted primarily from foreign withholding tax expense.
	The Company reported pre-tax book income (loss) from continuing operations of:
			Years Ended December 31,
			2013			2012			2011
			(In thousands)
						(1) as adjusted			(1) as adjusted
	Domestic		$	3,349		$	(2,175	)	$	-2,034
	Foreign			323			(4,383	)		359
	Total		$	3,672		$	(6,558)		$	(1,675)
	(1) See Note 1 “Significant Accounting Policies — Intangible Assets” of Notes to Consolidated Financial Statements.
	The benefit (provision) for income taxes from continuing operations consisted of the following:
			Years Ended December 31,
			2013			2012			2011
			(In thousands)
	Current:
	United States federal		$	(300	)	$	91		$	115
	Foreign			(12	)		(902	)		(1,923	)
	State and local			(55	)		19			(8	)
	Total current		$	-367		$	(792	)	$	(1,816	)
	Deferred:
	United States federal			36,190			0			0
	Foreign			660			0			0
	State and local			0			0			0
	Total deferred			36,850			0			0
			$	36,483		$	-792		$	(1,816	)
	In 2013, 2012, and 2011 the Company’s income tax payable was not decreased by the tax benefit related to stock options. The Company includes only the direct tax effects of employee stock incentive plans in calculating this benefit, which is recorded to additional paid-in capital.
	Deferred tax assets and liabilities are recognized for the temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, tax losses, and credit carryforwards. Significant components of the net deferred tax assets and liabilities consisted of:
			December 31,
			2013			2012
			(In thousands)
	Deferred tax assets:			(1) as adjusted)
	Net operating loss carryforwards		$	23,652		$	24,211
	State income taxes			1			(7	)
	Deferred revenue			3,588			4,978
	Research and development and other credits			8,201			9,263
	Reserves and accruals recognized in different periods			4,994			4,606
	Basis difference in investment			967			1,032
	Capitalized R&D expenses			1,535			1,566
	Depreciation and amortization			887			1,008
	Other			120			159
	Total deferred tax assets			43,945			46,816
	Valuation allowance			(7,095	)		(46,816	)
	Net deferred tax assets		$	36,850		$	0
	(1) See Note 1 “Significant Accounting Policies—Intangible Assets” of Notes to the Consolidated Financial Statements.
	The Company accounts for deferred taxes under ASC Topic 740, “Income Taxes” (“ASC 740”) which involves weighing positive and negative evidence concerning the realizability of the Company’s deferred tax assets in each jurisdiction. Prior to December 31, 2013, the Company maintained a full valuation allowance for its net deferred tax assets since the likelihood of the realization of those assets had not become “more likely than not” based on the Company’s assessment of available evidence. During the fourth quarter of 2013, based on a review of all positive and negative evidence related to historical operations, future projections of taxable income which include fixed fees to be recognized under existing non-cancelable license agreements, and tax planning strategies, the Company determined that it was more likely than not that certain of its Federal and foreign deferred tax assets would be realizable.
	For the year ended December 31, 2013, based on its assessment of the realizability of its deferred tax assets, the Company released the valuation allowance against certain of its U.S. Federal and foreign deferred tax assets which resulted in a tax benefit of $36.8 million. The Company concluded that it was not more likely than not that certain other U.S. Federal deferred tax assets would be utilized and, accordingly, maintained a valuation allowance of $1.1 million against these deferred tax assets. The Company also determined there was not sufficient evidence to support the release of the valuation allowance against its State and certain other Foreign deferred tax assets. Accordingly, the Company maintained a valuation allowance of $6.0 million for these deferred tax assets.
	As of December 31, 2013, the net operating loss carryforwards for federal and state income tax purposes were approximately $65.3 million and $52.4 million, respectively. The federal net operating losses expire between 2020 and 2033 and the state net operating losses begin to expire in 2028. $7.0 million of the Company’s net operating losses are associated with excess benefits related to stock compensation; when realized the amount will be an increase to additional paid in capital. As of December 31, 2013, the Company had federal and state tax credit carryforwards of approximately $8.7 million and $770,000, respectively, available to offset future taxable income. The federal credit carryforwards will expire between 2015 and 2033 and the California tax credits will carryforward indefinitely. In addition, as of December 31, 2013, the Company has Canadian research and development credit carryforwards of $1.2 million, which will expire at various dates through 2033. These operating losses and credit carryforwards have not been reviewed by the relevant tax authorities and could be subject to adjustment upon examinations.
	Section 382 of the Internal Revenue Code (“IRC Section 382”) imposes limitations on a corporation’s ability to utilize its net operating losses and credit carryforwards if it experiences an “ownership change” as defined by IRC Section 382. Utilization of a portion of the Company’s federal net operating loss carryforward was limited in accordance with IRC Section 382, due to an ownership change that occurred during 1999. This limitation has fully lapsed as of December 31, 2010. As of December 31, 2013, the Company conducted an IRC Section 382 analysis with respect to its net operating loss and credit carryforwards and determined there was no limitation. There can be no assurance that future issuances of the Company’s securities will not trigger limitations under IRC Section 382 which could limit utilization of these tax attributes.
	For purposes of the reconciliation between the benefit (provision) for income taxes at the statutory rate and the effective tax rate, a national U.S. 35% rate is applied as follows:
			2013			2012			2011
						(1) as adjusted			(1) as adjusted
	Federal statutory tax rate			35	%		35	%		35	%
	State taxes, net of federal benefit			0.1	%		2.3	%		5	%
Foreign withholding			8.2	%		(13.0	)%		(112.6	)%
Stock compensation expense			2.5	%		(2.6	)%		(9.3	)%
Meals & entertainment			0.3	%		(0.2	)%		(0.9	)%
Foreign rate differential			(1.7	)%		(2.8	)%		(5.3	)%
Prior year true-up items			0.1	%		0.1	%		(3.7	)%
Tax reserves			1.3	%		(0.1	)%		(0.6	)%
Benefit of discontinued operations			0	%		1.5	%		2.3	%
Other			0	%		0.3	%		4.9	%
Valuation allowance			(1039.3	)%		(32.6	)%		(23.2	)%
Effective tax rate			(993.5	)%		(12.1	)%		(108.4	)%
-1	See Note 1 “Significant Accounting Policies—Intangible Assets” of Notes to Consolidated Financial Statements.
Undistributed earnings of the Company’s foreign subsidiaries are considered to be indefinitely reinvested and accordingly, no provision for federal and state income taxes has been provided thereon. Upon distribution of those earnings in the form of dividends or otherwise, the Company would be subject to both U.S. income taxes (subject to an adjustment for foreign tax credits) and withholding taxes payable to various foreign countries.
The Company maintains liabilities for uncertain tax positions. These liabilities involve considerable judgment and estimation and are continuously monitored by management based on the best information available, including changes in tax regulations, the outcome of relevant court cases, and other information. A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows:
		2013			2012			2011
		Unrecognized			Unrecognized			Unrecognized
		Tax Benefits			Tax Benefits			Tax Benefits
		(In thousands)
Balance at beginning of year		$	628		$	628		$	628
Gross increases for tax positions of prior years			896			0			0
Gross decreases for tax positions of prior years			0			0			0
Gross increases for tax positions of current year			110			0			0
Settlements			0			0			0
Lapse of statute of limitations			0			0			0
Balance at end of year		$	1,634		$	628		$	628
The unrecognized tax benefits relate primarily to federal and state research and development credits. The Company’s policy is to account for interest and penalties related to uncertain tax positions as a component of income tax expense. As of December 31, 2013, the Company accrued interest or penalties related to uncertain tax positions in the amount of $64,000. The Company expects to release reserves and record a tax benefit due to the expiration of statute of limitation during the next 12 months. As of December 31, 2013, the total amount of unrecognized tax benefits that would affect the Company’s effective tax rate, if recognized, is $264,000.
Because the Company has net operating loss and credit carryforwards, there are open statutes of limitations in which federal, state and foreign taxing authorities may examine the Company’s tax returns for all years from 1998 through the current period.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Net Income (Loss) Per Share	'
	14.  Net Income (Loss) Per Share
	The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share:
			Years Ended December 31,
			2013		2012		2011
			(In thousands, except per share amounts)
	Numerator:					(1) as adjusted		(1) as adjusted
	Income (loss) from continuing operations		$	40,155	$	-7,350	$	-3,491
	Gain from discontinued operations, net of tax			0		153		61
	Net income (loss) used in computing basic and diluted net income (loss) per share		$	40,155	$	-7,197	$	-3,430
	Denominator:
	Shares used in computation of basic and diluted net income (loss) per share (weighted average common shares outstanding)			28,190		27,735		28,564
	Dilutive potential common shares:
	Restricted Stock and RSUs			343		0		0
	Stock options			805		0		0
	Shares used in computation of diluted net income (loss) per share			29,338		27,735		28,564
	Basic net income (loss) per share from:
	Continuing operations		$	1.42	$	-0.27	$	-0.12
	Discontinued operations			0		0.01		0
	Total		$	1.42	$	-0.26	$	-0.12
	Diluted net income (loss) per share from:
	Continuing operations		$	1.37	$	-0.27	$	-0.12
	Discontinued operations			0		0.01		0
	Total		$	1.37	$	-0.26	$	-0.12
	-1	See Note 1 “Significant Accounting Policies—Intangible Assets” of Notes to Consolidated Financial Statements.
	For the year ended December 31, 2013, options to purchase approximately 979,521 shares of common stock with an exercise price greater than the average fair market value of the Company’s stock of $11.72 per share were not included in the calculation because the effect would have been anti-dilutive.
	As of December 31, 2012, and 2011 the Company had securities outstanding that could potentially dilute basic earnings per share in the future, but were excluded from the computation of diluted net loss per share in the periods presented since their effect would have been anti-dilutive. These outstanding securities consisted of the following:
			Year Ended December 31,
			2012		2011
	Outstanding stock options			3,155,631		3,267,838
	Unvested restricted stock awards			44,000		18,000
	Unvested restricted stock units			708,651		407,765

Employee_Benefit_Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2013
Postemployment Benefits [Abstract]	'
Employee Benefit Plan	'
	15.  Employee Benefit Plan
	The Company has a 401(k) tax-deferred savings plan under which eligible employees may elect to have a portion of their salary deferred and contributed to the 401(k) plan. Contributions may be made by the Company at the discretion of the Board of Directors. Beginning in January 2008, the Company matched 25% of the employee’s contribution up to $2,000 for the year.
		Year ended December 31,
		2013		2012		2011
		(In thousands)
	Company contribution to 401 (k) plan	$	91	$	77	$	85

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Contingencies	'
	16.  Contingencies
	In re Immersion Corporation Securities Litigation
	In September and October 2009, various putative shareholder class action and derivative complaints were filed in federal and state court against the Company and certain current and former Immersion directors and officers.
	On September 2, 2009, a securities class action complaint was filed in the United States District Court for the Northern District of California against the Company and certain of its current and former directors and officers. Over the following five weeks, four additional class action complaints were filed. (One of these four actions was later voluntarily dismissed.) The securities class action complaints name the Company and certain current and former Immersion directors and officers as defendants and allege violations of federal securities laws based on the Company’s issuance of allegedly misleading financial statements. The various complaints assert claims covering the period from May 2007 through July 2009 and seek compensatory damages allegedly sustained by the purported class members.
	On December 21, 2009, these class actions were consolidated by the court as In Re Immersion Corporation Securities Litigation. On the same day, the court appointed a lead plaintiff and lead plaintiff’s counsel. Following the Company’s restatement of its financial statements, lead plaintiff filed a consolidated complaint on April 9, 2010. Defendants moved to dismiss the action on June 15, 2010 and that motion was granted with leave to amend on March 11, 2011. Lead plaintiff filed an amended complaint on April 29, 2011. Defendants moved to dismiss the amended complaint on July 1, 2011. On December 16, 2011, the motion to dismiss was granted with prejudice and on December 19, 2011, judgment was entered in favor of defendants. On January 13, 2012, the plaintiffs filed a notice of appeal to the Ninth Circuit Court of Appeals. In May 2012, plaintiff filed his opening appeals brief. On July13, 2012, the Company filed its response brief. On September 4, 2012, plaintiff filed his reply. The Court heard oral argument on February 12, 2014 and took the matter under submission.
	Other Contingencies
	From time to time, the Company receives claims from third parties asserting that the Company’s technologies, or those of its licensees, infringe on the other parties’ IP rights. Management believes that these claims are without merit. Additionally, periodically, the Company is involved in routine legal matters and contractual disputes incidental to its normal operations. In management’s opinion, the resolution of such matters will not have a material adverse effect on the Company’s consolidated financial condition, results of operations, or liquidity.
	In the normal course of business, the Company provides indemnifications of varying scope to customers against claims of IP infringement made by third parties arising from the use of the Company’s IP, technology, or products. Historically, costs related to these guarantees have not been significant, and the Company is unable to estimate the maximum potential impact of these guarantees on its future results of operations.

Segment_Reporting_Geographic_I

Segment Reporting, Geographic Information, and Significant Customers	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Reporting, Geographic Information, and Significant Customers	'
	17.  Segment Reporting, Geographic Information, and Significant Customers
	Segment Information
	The Company develops, licenses, and supports a wide range of software and IP that more fully engage users’ sense of touch when operating digital devices. The Company focuses on the following target application areas: mobile communications and consumer electronics, automotive, gaming, commercial and industrial, and medical. The Company manages these application areas in one operating and reporting segment with one set of management, development, and administrative personnel.
	The Company’s chief operating decision maker (“CODM”) is the Chief Executive Officer. The CODM allocates resources to and assesses the performance of the Company using information about its revenue and operating loss. There is only one segment that is reported to management.
	Revenue by Region
	The following is a summary of revenues by geographic areas. Revenues are broken out geographically by the ship-to location of the customer. Geographic revenue as a percentage of total revenues by region was as follows:
		Years Ended December 31,
		2013			2012			2011
	North America		28	%		41	%		42	%
	Europe		4	%		13	%		13	%
	Far East		68	%		46	%		45	%
	Rest of the world		0	%		0	%		0	%
	Total		100	%		100	%		100	%
	Geographic revenue as a percentage of total revenues by country was as follows:
		Years Ended December 31,
		2013			2012			2011
	United States of America		26	%		38	%		40	%
	Korea		58	%		36	%		37	%
	Japan		7	%			*			*
	Other countries (none of which is more than 10% of revenues)		9	%		26	%		23	%
	Total		100	%		100	%		100	%
	* Represents less than 10% of the Company’s revenue and is included below.
	The majority of the Company’s long-lived assets are located in the United States of America. Long-lived assets include net property and equipment, intangibles, long-term investments, and other assets. Long-lived assets that were outside the United States of America constituted less than 10% of the total on December 31, 2013, December 31, 2013, and December 31, 2012.
	Significant Customers
	Customers comprising 10% or greater of the Company’s net revenues are summarized as follows:
		Years Ended December 31,
		2013			2012			2011
	Samsung Electronics		47	%		24	%		20	%
	Customer B			*			*		12	%
	Customer C			*			*			*
	Customer D			*			*			*
	Customer E			*			*			*
	Customer F			*			*			*
	Total		47	%		24	%		32	%
	* Revenue derived from customer represented less than 10% for the period.
	Customers comprising 10% or greater of the Company’s outstanding accounts and other receivable are summarized as follows:
		December 31,
		2013			2012			2011
	Samsung Electronics			*			*			*
	Customer B			*		33	%			*
	Customer C			*		38	%		14	%
	Customer D		11	%			*		14	%
	Customer E			*		10	%			*
	Customer F		28	%			*			*
	* Represents less than 10% of the Company’s outstanding accounts and other receivables.

Quarterly_Results_of_Operation

Quarterly Results of Operations	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Results of Operations	'
	18. Quarterly Results of Operations (Unaudited)
	The following table presents certain consolidated statement of operations data for the Company’s eight most recent quarters:
		Dec 31,			Sept 30,			June 30,			Mar 31,			Dec 31,			Sept 30,			June 30,			Mar 31,
		2013			2013			2013			2013			2012			2012			2012			2012
					(2) as			(2) as			(2) as						(2) as			(2) as			(2) as
					adjusted			adjusted			adjusted						adjusted			adjusted			adjusted
		(In thousands, except per share data)
	Revenues (1)	$	12,067		$	11,342		$	10,201		$	13,860		$	8,860		$	7,142		$	6,476		$	9,691
	Gross profit		11,991			11,231			10,074			13,712			8,474			6,869			6,262			9,376
	Operating income (loss) (2)		648			814			448			1,694			(373	)		(3,456	)		(2,762	)		(137	)
	Income (loss) from continuing operations before provision for taxes (2)		636			856			476			1,704			(347	)		(3,390	)		(2,694	)		(127	)
	Benefit (provision) for income taxes (4)		36,767			(257	)		(10	)		(17	)		(55	)		(118	)		(66	)		(553	)
	Income (loss) from continuing operations (2)		37,403			599			466			1,687			(402	)		(3,508	)		(2,760	)		(680	)
	Net income from discontinued operations (net of tax)		0			0			0			0			0			0			153			0
	Net income (loss) (2)		37,403			599			466			1,687			(402	)		(3,508	)		(2,607	)		(680	)
	Basic net income (loss) per share (2) (3)
	Continuing operations	$	1.31		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.1		$	-0.02
	Discontinued operations		0			0			0			0			0			0			0.01			0
	Total	$	1.31		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.09		$	-0.02
	Shares used in calculating basic net income (loss) per share		28,614			28,558			28,146			27,424			27,288			27,658			28,058			27,941
	Diluted net income (loss) per share (2) (3)
	Continuing operations	$	1.26		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.1		$	-0.02
	Discontinued operations		0			0			0			0			0			0			0.01			0
	Total	$	1.26		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.09		$	-0.02
	Shares used in calculating diluted net income (loss) per share		29,675			29,653			29,293			28,294			27,288			27,658			28,058			27,941
	(1) The Company typically experiences seasonally higher revenue in the first calendar quarter due to the reporting of holiday sales from some of our customers.
	(2) Amounts have been impacted by the Company’s change in accounting method for the treatment of external patent-related costs. The Company no longer capitalizes external legal filing, and continuation or annuity fees associated with patent and trademark applications. under the new method of accounting, external patent-related costs are expensed as incurred and classified as general and administrative expenses in our consolidated statement of operations. See Note 1 to the consolidated financial statements for additional information regarding this change in accounting method.
	(3) The quarterly earnings per share information is calculated separately for each period. Therefore, the sum of such quarterly per share amounts may differ from the total for the year.
	(4) In the fourth quarter of 2014, there was an increase in the benefit from taxes primarily due to the partial release of our Federal deferred and foreign income tax asset valuation allowance based on the assessment of our ability to utilize these deferred income tax assets. See Note 13 to the consolidated financial statements for additional information on our income taxes.
	As discussed in Note 1, income (loss) from continuing operations, net income (loss), and net income (loss) per share have all been revised for the retrospective application of our change in accounting method for the treatment of external patent costs.
	The impact of this accounting method change revised our previously reported information by the following (in thousands, except per share amounts):
		Dec 31,			Sept 30,			June 30,			Mar 31,			Dec 31,			Sept 30,			June 30,			Mar 31,
		2013			2013			2013			2013			2012			2012			2012			2012
		(In thousands, except per share data)
	Income (loss) from continuing operations		(752	)		(607	)		(310	)		(566	)		(202	)		(518	)		(452	)		(461	)
	Benefit (provision) for income taxes		6,132			0			0			0			0			0			0			0
	Net income (loss)		5,380			(607	)		(310	)		(566	)		(202	)		(518	)		(452	)		(461	)
	Basic net income (loss) per share		0.19			(0.02	)		(0.01	)		(0.02	)		(0.01	)		(0.02	)		(0.02	)		(0.02	)
	Diluted net income (loss) per share		0.18			(0.02	)		(0.01	)		(0.02	)		(0.01	)		(0.02	)		(0.02	)		(0.02	)
	(1) For the quarter ended December 31, 2013, under the Company’s historical method of accounting for external costs associated with the patent application process, the income tax benefit from continuing operations would have been $30,635 as compared to $36,767 under the Company’s new accounting method. The change in method had no impact on the income tax provision from continuing operations for all quarters prior to the December 31, 2013 quarter as the Company was in a full valuation allowance position for those quarters.

Schedule_II_Valuation_and_Qual

Schedule II Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Valuation And Qualifying Accounts [Abstract]	'
Schedule II Valuation and Qualifying Accounts	'
	SCHEDULE II
	VALUATION AND QUALIFYING ACCOUNTS
		Beginning		Costs and			Deductions/		End of
		of Period		Expenses			Write-offs		Period
			(In thousands)
	Year ended December 31, 2013
	Allowance for doubtful accounts	$	134	$	8		$	133	$	9
	Year ended December 31, 2012
	Allowance for doubtful accounts	$	21	$	113		$	0	$	134
	Year ended December 31, 2011
	Allowance for doubtful accounts	$	97	$	(71	)	$	5	$	21

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Description of Business	'
	Description of Business
	Immersion Corporation (the “Company”) was incorporated in 1993 in California and reincorporated in Delaware in 1999. It is an intellectual property (“IP”) and technology licensing company focused on the creation, design, development, and licensing of innovations and technologies that allow people to use their sense of touch more fully when operating a wide variety of digital devices.
Principles of Consolidation and Basis of Presentation	'
	Principles of Consolidation and Basis of Presentation
	The consolidated financial statements include the accounts of Immersion Corporation and its wholly-owned subsidiaries, Immersion Canada Inc.; Immersion International, LLC; Immersion Medical, Inc.; Immersion Japan K.K.; Immersion Ltd.; Immersion Software Ireland Ltd.; and Haptify, Inc. All intercompany accounts, transactions, and balances have been eliminated in consolidation. The Company has prepared the accompanying consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”).
Cash Equivalents	'
	Cash Equivalents
	The Company considers all highly liquid instruments purchased with an original or remaining maturity of less than three months at the date of purchase to be cash equivalents.
Short-term Investments	'
	Short-term Investments
	The Company’s short-term investments consist primarily of U.S treasury bills and government agency securities purchased with an original or remaining maturity of greater than 90 days on the date of purchase. The Company classifies debt securities with readily determinable market values as “available-for-sale.” Even though the stated maturity dates of these debt securities may be one year or more beyond the balance sheet date, the Company has classified all debt securities as short-term investments as they are reasonably expected to be realized in cash or sold within one year. These investments are carried at fair market value with unrealized gains and losses considered to be temporary in nature reported as a separate component of other comprehensive income (loss) within stockholders’ equity.
	The Company recognizes an impairment charge in the consolidated statement of operations when a decline in value is judged to be other than temporary based on the specific identification method. Other-than-temporary impairment charges may exist when the Company has the intent to sell the security, will more likely than not be required to sell the security, or does not expect to recover the principal.
Property and Equipment	'
	Property and Equipment
	Property is stated at cost and is depreciated using the straight-line method over the estimated useful life of the related asset. The estimated useful lives are typically as follows:
	Computer equipment and purchased software			3 years
	Machinery and equipment			3-5 years
	Furniture and fixtures			5 years
	Leasehold improvements are amortized over the shorter of the lease term or their estimated useful life.
Intangible Assets	'
	Intangible Assets
	Intangible assets with finite useful lives are amortized and intangible assets with indefinite lives are not amortized but rather are tested at least annually for impairment.
	The Company has acquired patents and other intangible assets. Costs associated with acquired patents and other intangible assets are capitalized as incurred. These costs are amortized utilizing the straight-line method, which approximates the pattern of consumption over the estimated useful lives of the respective assets, generally ten years.
	The Company also internally develops and licenses IP and software , and when possible, it protects its IP and software with patents and trademarks. During the fourth quarter 2013, the Company elected to change its method of accounting for external patent-related costs associated with its internally developed patents and trademarks. Prior to the change, the Company capitalized the external legal, filing, continuation or annuity fees associated with patent and trademark applications. These costs were amortized on a straight-line basis over their estimated economic useful lives which were generally 10 years from the date of issuance. Under the new method of accounting, external patent-related costs are expensed as incurred and classified as general and administrative expenses in our consolidated statement of operations, consistent with the classification of internal legal costs associated with internally developed patents and trademarks.
	Prior to the change in accounting method, the Company had a net intangible balance of $17.6 million associated with capitalized external patent-related costs, comprised of $10.2 million in costs related to unissued patent applications and $13.5 million in costs related to issued patents, with accumulated amortization of $6.1 million. The impact of the change in accounting method on the Company’s financial statements and disclosures is described below.
	The Company believes that this change is preferable because it will result in consistent treatment of all patent-related costs. Under the new method, both internal and external costs associated with the Company’s patent and trademark applications are expensed as incurred, thereby increasing the transparency and relevance of the financial statements. In addition, the change in method will reduce the burden to track and maintain the patent costs related to internally developed patents, and will eliminate the subjectivity and judgment involved in assessing the Company’s patent portfolio for impairment arising in part from the lengthy patent approval process. The change in method also will provide for a better comparison with the Company’s industry peers, as the predominant industry practice is to expense external patent-related costs as incurred.
	In accordance with Accounting Standards Codification (“ASC”) 250, “Accounting Changes and Error Corrections,” the change in accounting method has been retrospectively applied to all prior periods presented herein. Comparative financial statements of prior years have been adjusted to apply the new method retrospectively. As a result of the accounting change, the accumulated deficit increased $11.4 million as of December 31, 2013, from $75.5 million as of December 31, 2013 to $86.9 million as of December 31, 2013.The following tables summarize the impact on line items of the change in accounting method on the current and previously issued balance sheet as of December 31, 2013 and 2012, statements of operations for the years ended December 31, 2013, 2012, and 2011, and the statements of cash flows for the years ended December 31, 2013, 2012, and 2011.
	CONSOLIDATED BALANCE SHEET		As of December 31, 2013
	(In thousands)		Before			After			Effect of
			Change			Change			Change
	Deferred income taxes		$	7,779		$	7,784		$	5
	Deferred income tax assets		$	22,939		$	29,066		$	6,127
	Intangibles and other assets, net		$	17,979		$	381		$	(17,598	)
	Accumulated deficit		$	(75,463	)	$	(86,929	)	$	(11,466	)
	CONSOLIDATED BALANCE SHEET		As of December 31, 2012
	(In thousands)		As Previously			As			Effect of
			Reported			Adjusted			Change
	Deferred income taxes		$	165		$	0		$	(165	)
	Deferred income tax assets		$	0		$	97		$	97
	Intangibles and other assets, net		$	15,725		$	362		$	(15,363	)
	Other current liabilities		$	1,022		$	1,119		$	97
	Deferred income tax liabilities		$	165		$	0		$	(165	)
	Accumulated deficit		$	(111,721	)	$	(127,084	)	$	(15,363	)
	CONSOLIDATED STATEMENT OF OPERATIONS		Year Ended December 31, 2013
	(In thousands, except for per share amounts)		Before			After			Effect of
			Change			Change			Change
	General and administrative		$	19,193		$	23,104		$	3,911
	Amortization of intangibles		$	1,755		$	79		$	(1,676	)
	Benefit (provision) for income taxes.		$	30,351		$	36,483		$	6,132
	Income from continuing operations		$	36,258		$	40,155		$	3,897
	Net income		$	36,258		$	40,155		$	3,897
	Basic net income per share — continuing operations		$	1.29		$	1.42		$	0.13
	Basic net income per share — Total		$	1.29		$	1.42		$	0.13
	Diluted net income per share — continuing operations		$	1.24		$	1.37		$	0.13
	Diluted net income per share — Total		$	1.24		$	1.37		$	0.13
	CONSOLIDATED STATEMENT OF OPERATIONS		Year Ended December 31, 2012
	(In thousands, except for per share amounts)		As Previously			As			Effect of
			Reported			Adjusted			Change
	General and administrative		$	19,326		$	22,464		$	3,138
	Amortization of intangibles		$	1,554		$	49		$	(1,505	)
	Loss from continuing operations		$	(5,717	)	$	(7,350	)	$	(1,633	)
	Net loss		$	(5,564	)	$	(7,197	)	$	(1,633	)
	Basic and diluted net loss per share — continuing operations		$	(0.21	)	$	(0.27	)	$	(0.06	)
	Basic and diluted net loss per share — Total		$	(0.20	)	$	(0.26	)	$	(0.06	)
	CONSOLIDATED STATEMENT OF OPERATIONS		Year Ended December 31, 2011
	(In thousands, except for per share amounts)		As Previously			As			Effect of
			Reported			Adjusted			Change
	General and administrative		$	12,568		$	15,749		$	3,181
	Amortization of intangibles		$	1,394		$	39		$	(1,355	)
	Loss from continuing operations		$	(1,665	)	$	(3,491	)	$	(1,826	)
	Net loss		$	(1,604	)	$	(3,430	)	$	(1,826	)
	Basic and diluted net loss per share — continuing operations		$	(0.06	)	$	(0.12	)	$	(0.06	)
	Basic and diluted net loss per share — Total		$	(0.06	)	$	(0.12	)	$	(0.06	)
	CONSOLIDATED STATEMENT OF CASH FLOWS		Year Ended December 31, 2013
	(In thousands)		Before			After			Effect of
			Change			Change			Change
	Cash flows from operating activities:
	Net income		$	36,258		$	40,155		$	3,897
	Amortization of intangibles		$	1,755		$	79		$	(1,676	)
	Deferred income taxes		$	(30,718	)	$	(36,850	)	$	(6,132	)
	Accounts payable		$	86		$	341		$	255
	Accrued compensation and other current liabilities		$	2,666		$	2,788		$	122
	Cash flows provided by (used in) investing activities:
Additions to Intangibles		$	(3,534	)	$	0		$	3,534
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment		$	843		$	24		$	(819	)
CONSOLIDATED STATEMENT OF CASH FLOWS		Year Ended December 31, 2012
(In thousands)		As Previously			As Adjusted			Effect of
		Reported						Change
Cash flows from operating activities:
Net loss		$	(5,564	)	$	(7,197	)	$	(1,633	)
Amortization of intangibles		$	1,554		$	49		$	(1,505	)
Accounts payable		$	(18	)	$	8		$	26
Accrued compensation and other current liabilities		$	(685	)	$	(717	)	$	(32	)
Cash flows provided by (used in) investing activities:
Additions to Intangibles		$	(3,244	)	$	(100	)	$	3,144
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment		$	442		$	0		$	(442	)
CONSOLIDATED STATEMENT OF CASH FLOWS		Year Ended December 31, 2011
(In thousands)		As Previously			As Adjusted			Effect of
		Reported						Change
Cash flows from operating activities:
Net loss		$	(1,604	)	$	(3,430	)	$	(1,826	)
Amortization of intangibles		$	1,394		$	39		$	(1,355	)
Accounts payable		$	(24	)	$	(47	)	$	(23	)
Accrued compensation and other current liabilities		$	(785	)	$	(917	)	$	(132	)
Cash flows provided by (used in) investing activities:
Additions to Intangibles		$	(3,336	)	$	0		$	3,336
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment		$	1,222		$	775		$	(447	)
Long-lived Assets	'
	Long-lived Assets
	The Company evaluates its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of that asset may not be recoverable. An impairment loss would be recognized when the sum of the undiscounted future net cash flows expected to result from the use of the asset and its eventual disposition is less than its carrying amount. Measurement of an impairment loss for long-lived assets and certain identifiable intangible assets that management expects to hold and use is based on the fair value of the asset.
Revenue Recognition	'
	Revenue Recognition
	The Company recognizes revenues in accordance with applicable accounting standards, including ASC 605-10-S99, “Revenue Recognition” (“ASC 605-10-S99”); ASC 605-25, “Multiple Element Arrangements” (“ASC 605-25”); and ASC 985-605, “Software-Revenue Recognition” (“ASC 985-605”). The Company derives its revenues from three principal sources: royalty and license fees, product sales, and development contracts. As described below, management judgments, assumptions, and estimates must be made and used in connection with the revenue recognized in any accounting period. Material differences may result in the amount and timing of revenue for any period based on the judgments and estimates made by management. Specifically, in connection with each transaction, the Company must evaluate whether: (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred, (iii) the fee is fixed or determinable, and (iv) collectibility is probable. The Company applies these criteria as discussed below.
		•		Persuasive evidence of an arrangement exists. For a license arrangement, the Company requires a written contract, signed by both the customer and the Company. For a stand-alone product sale, the Company requires a purchase order or other form of written agreement with the customer.
		•		Delivery has occurred. The Company delivers software and product to customers physically and also delivers software electronically. For physical deliveries not related to software, the transfer terms typically include transfer of title and risk of loss at the Company’s shipping location. For electronic deliveries, delivery occurs when the Company provides the customer access codes or “keys” that allow the customer to take immediate possession of the software.
		•		The fee is fixed or determinable. The Company’s arrangement fee is based on the use of standard payment terms which are those that are generally extended to the majority of customers. For transactions involving extended payment terms, the Company deems these fees not to be fixed or determinable for revenue recognition purposes and revenue is deferred until the fees become due and payable.
		•		Collectibility is probable. To recognize revenue, the Company must judge collectibility of the arrangement fees, which is done on a customer-by-customer basis pursuant to the credit review policy. The Company typically sells to customers with whom there is a history of successful collection. For new customers, the Company evaluates the customer’s financial condition and ability to pay. If it is determined that collectibility is not probable based upon the credit review process or the customer’s payment history, revenue is recognized when payment is received.
	Royalty and license revenue — The Company licenses its patents and software to customers in a variety of industries such as mobility, gaming, automotive, and medical devices. A majority of these are variable fee arrangements where the royalties earned by the Company are based on unit or sales volumes of the respective licensees. The Company also enters into fixed license fee arrangements. The terms of the royalty agreements generally require licensees to give notification of royalties due to the Company within 30 – 45 days of the end of the quarter during which their related sales occur. As the Company is unable to reliably estimate the licensees’ sales in any given quarter to determine the royalties due to it, the Company recognizes royalty revenues based on royalties reported by licensees and when all revenue recognition criteria are met. Certain royalties are based upon customer shipments or revenues and could be subject to change and may result in out of period adjustments. The Company recognizes fixed license fee revenue for licenses to IP and software when earned under the terms of the agreements, which is generally recognized on a straight-line basis over the expected term of the license.
	Development, services, and other revenue — Development, services, and other revenue are comprised of engineering services (engineering services and/or development contracts), and in limited cases, post contract customer support (“PCS”). Engineering services revenues are recognized under the proportional performance accounting method based on physical completion of the work to be performed or completed performance method. A provision for losses on contracts is made, if necessary, in the period in which the loss becomes probable and can be reasonably estimated. Revisions in estimates are reflected in the period in which the conditions become known. To date, such losses have not been significant. Revenue from PCS is typically recognized over the period of the ongoing obligation, which is generally consistent with the contractual term.
	Multiple element arrangements — The Company enters into multiple element arrangements in which customers purchase time-based non-exclusive licenses that cannot be resold to others, which include a combination of software and/or IP licenses, engineering services, and in limited cases PCS. For arrangements that are software based and include software and engineering services, the services are generally not essential to the functionality of the software, and customers may purchase engineering services to facilitate the adoption of the Company’s technology, but they may also decide to use their own resources or appoint other engineering service organizations to perform these services. For arrangements that are in substance subscription arrangements, the entire arrangement fee is recognized ratably over the contract term, subject to any limitations related to extended payment terms. For arrangements involving upfront fees for services and royalties earned by the Company based on unit or sales volumes of the respective licensees, and the services are performed ratably over the arrangement or front-end loaded; the upfront fees are recognized ratably over the contract term and royalties based on unit or sales volume are recognized when they become fixed and determinable. As the Company is unable to reliably estimate the licensees’ sales in any given quarter to determine the royalties due to it, the Company recognizes per unit or sales volume driven royalty revenues based on royalties reported by licensees and when all revenue recognition criteria are met.
	Product sales — The Company recognizes revenue from the sale of products and the license of associated software, if any, and expenses all related costs of products sold, once delivery has occurred and customer acceptance, if required, has been achieved. The Company typically grants to customers a warranty that guarantees the products will substantially conform to the Company’s current specifications for generally three to twelve months from the delivery date pursuant to the terms of the arrangement. Historically, warranty-related costs have not been significant.
Advertising	'
	Advertising
	Advertising costs (including obligations under cooperative marketing programs) are expensed as incurred and included in sales and marketing expense. Advertising expense was as follows:
			Year ended December 31,
			2013			2012			2011
			(In thousands)
	Advertising expense		$	322		$	152		$	192
Research and Development	'
	Research and Development
	Research and development costs are expensed as incurred. The Company has sometimes generated revenues from development contracts with commercial customers that have enabled it to accelerate its own product development efforts. Such development revenues have only partially funded the Company’s product development activities, and the Company generally retains ownership of the products developed under these arrangements. As a result, the Company classifies all development costs related to these contracts as research and development expenses.
Income Taxes	'
	Income Taxes
	The Company uses the asset and liability method of accounting for income taxes. Under this method, income tax expense is recognized for the amount of taxes payable or refundable for the current year. In addition, deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the financial reporting and tax bases of assets and liabilities, and for operating losses and tax credit carryforwards. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized and are reversed at such time that realization is believed to be more likely than not.
Software Development Costs	'
	Software Development Costs
	Certain of the Company’s products include software. Costs for the development of new software products and substantial enhancements to existing software products are expensed as incurred until technological feasibility has been established, at which time any additional costs would be capitalized. The Company considers technological feasibility to be established upon completion of a working model of the software and the related hardware. Because the Company believes its current process for developing software is essentially completed concurrently with the establishment of technological feasibility, no costs have been capitalized to date.
Stock-based Compensation	'
	Stock-based Compensation
	Stock-based compensation cost is measured at the grant date based on the fair value of the award and is recognized as expense on a straight-line basis over the requisite service period, which is the vesting period. See Note 10 for further information regarding the Company’s stock-based compensation assumptions and expenses.
Comprehensive Income (Loss)	'
	Comprehensive Income (Loss)
	Comprehensive income (loss) includes net income (loss) as well as other items of comprehensive income or loss. The Company’s other comprehensive income (loss) consists of foreign currency translation adjustments and unrealized gains and losses on available-for-sale securities, net of tax.
Use of Estimates	'
	Use of Estimates
	The preparation of consolidated financial statements and related disclosures in accordance with 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 and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include valuation of short-term investments, income taxes including uncertain tax provisions, revenue recognition, stock-based compensation, contingent liabilities from litigation, and accruals for other liabilities. Actual results may differ materially from those estimates.
Concentration of Credit Risks	'
	Concentration of Credit Risks
	Financial instruments that potentially subject the Company to a concentration of credit risk principally consist of cash, cash equivalents, short term investments, and accounts receivable. The Company invests primarily in money market accounts and highly liquid debt instruments purchased with an original or remaining maturity of greater than 90 days on the date of purchase. Deposits held with banks may exceed the amount of insurance provided on such deposits. Generally, these deposits may be redeemed upon demand. The Company licenses technology primarily to companies in North America, Europe, and the Far East. To reduce credit risk, management performs periodic credit evaluations of its customers’ financial condition. The Company maintains reserves for estimated potential credit losses, but historically has not experienced any significant losses related to individual customers or groups of customers in any particular industry or geographic area.
Certain Significant Risks and Uncertainties	'
	Certain Significant Risks and Uncertainties
	The Company operates in multiple industries and, accordingly, can be affected by a variety of factors. For example, management of the Company believes that changes in any of the following areas could have a negative effect on the Company in terms of its future financial position and results of operations: the mix of revenues; the loss of significant customers; fundamental changes in the technologies underlying the Company’s and its licensees’ products; market acceptance of the Company’s and its licensees’ products under development; development of sales channels; litigation or other claims in which the Company is involved; the ability to successfully assert its patent rights against others; the impact of changing economic conditions; the hiring, training, and retention of key employees; successful and timely completion of product and technology development efforts; and new product or technology introductions by competitors.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	Financial instruments consist primarily of cash equivalents, short-term investments, accounts receivable and accounts payable. Cash equivalents and short term investments are stated at fair value based on quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. The recorded cost of accounts receivable and accounts payable approximate the fair value of the respective assets and liabilities.
Foreign Currency Translation	'
	Foreign Currency Translation
	The functional currency of the Company’s foreign subsidiaries is U. S. dollars. Accordingly, gains and losses from the translation of the financial statements of the foreign subsidiaries and foreign currency transaction gains and losses are included in earnings.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In February 2013, the Financial Accounting Standards Board (“FASB”) ratified Accounting Standards Update (“ASU”) 2013-02 “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Comprehensive Income” (“ASU 2013-02). ASU 2013-02 requires entities to disclose additional information about items reclassified out of accumulated other comprehensive income (“AOCI”) including AOCI balances by component and significant items reclassified out of AOCI. This ASU is effective for reporting periods beginning after December 15, 2012, and is being applied prospectively. These amendments will change the manner in which the Company presents comprehensive income by reporting these additional disclosure items in the consolidated statements of operations and comprehensive loss or footnotes when they occur.
	In July 2013, the FASB ratified ASU 2013-11 “Presenting an Unrecognized Tax Benefit (“UTB”) When a Net Operating Loss Carryforward Exists” (“ASU 2013-11”). ASU 2013-02 provides that an UTB, or a portion thereof, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except to the extent that a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date to settle any additional income taxes that would result from disallowance of a tax position, or the tax law does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, then the unrecognized tax benefit should be presented as a liability. This ASU is effective for reporting periods beginning after December 15, 2013, and may be applied retrospectively. The Company is required to adopt ASU 2013-11 as of January 1, 2014, and is currently evaluating the potential impact, if any, of the adoption on its consolidated results of operations and financial condition.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Estimated Useful Lives of Property and Equipment	'
	Property is stated at cost and is depreciated using the straight-line method over the estimated useful life of the related asset. The estimated useful lives are typically as follows:
	Computer equipment and purchased software		3 years
	Machinery and equipment		3-5 years
	Furniture and fixtures		5 years
Impact of the Change in Accounting Method on the Previously Issued Balance Sheet, Statements of Operations and the Statements of Cash Flows	'
	2013.The following tables summarize the impact on line items of the change in accounting method on the current and previously issued balance sheet as of December 31, 2013 and 2012, statements of operations for the years ended December 31, 2013, 2012, and 2011, and the statements of cash flows for the years ended December 31, 2013, 2012, and 2011.
	CONSOLIDATED BALANCE SHEET	As of December 31, 2013
	(In thousands)	Before			After			Effect of
		Change			Change			Change
	Deferred income taxes	$	7,779		$	7,784		$	5
	Deferred income tax assets	$	22,939		$	29,066		$	6,127
	Intangibles and other assets, net	$	17,979		$	381		$	(17,598	)
	Accumulated deficit	$	(75,463	)	$	(86,929	)	$	(11,466	)
	CONSOLIDATED BALANCE SHEET	As of December 31, 2012
	(In thousands)	As Previously			As			Effect of
		Reported			Adjusted			Change
	Deferred income taxes	$	165		$	0		$	(165	)
	Deferred income tax assets	$	0		$	97		$	97
	Intangibles and other assets, net	$	15,725		$	362		$	(15,363	)
	Other current liabilities	$	1,022		$	1,119		$	97
	Deferred income tax liabilities	$	165		$	0		$	(165	)
	Accumulated deficit	$	(111,721	)	$	(127,084	)	$	(15,363	)
	CONSOLIDATED STATEMENT OF OPERATIONS	Year Ended December 31, 2013
	(In thousands, except for per share amounts)	Before			After			Effect of
		Change			Change			Change
	General and administrative	$	19,193		$	23,104		$	3,911
	Amortization of intangibles	$	1,755		$	79		$	(1,676	)
	Benefit (provision) for income taxes.	$	30,351		$	36,483		$	6,132
	Income from continuing operations	$	36,258		$	40,155		$	3,897
	Net income	$	36,258		$	40,155		$	3,897
	Basic net income per share — continuing operations	$	1.29		$	1.42		$	0.13
	Basic net income per share — Total	$	1.29		$	1.42		$	0.13
	Diluted net income per share — continuing operations	$	1.24		$	1.37		$	0.13
	Diluted net income per share — Total	$	1.24		$	1.37		$	0.13
	CONSOLIDATED STATEMENT OF OPERATIONS	Year Ended December 31, 2012
	(In thousands, except for per share amounts)	As Previously			As			Effect of
		Reported			Adjusted			Change
	General and administrative	$	19,326		$	22,464		$	3,138
	Amortization of intangibles	$	1,554		$	49		$	(1,505	)
	Loss from continuing operations	$	(5,717	)	$	(7,350	)	$	(1,633	)
	Net loss	$	(5,564	)	$	(7,197	)	$	(1,633	)
	Basic and diluted net loss per share — continuing operations	$	(0.21	)	$	(0.27	)	$	(0.06	)
	Basic and diluted net loss per share — Total	$	(0.20	)	$	(0.26	)	$	(0.06	)
	CONSOLIDATED STATEMENT OF OPERATIONS	Year Ended December 31, 2011
	(In thousands, except for per share amounts)	As Previously			As			Effect of
		Reported			Adjusted			Change
	General and administrative	$	12,568		$	15,749		$	3,181
	Amortization of intangibles	$	1,394		$	39		$	(1,355	)
	Loss from continuing operations	$	(1,665	)	$	(3,491	)	$	(1,826	)
	Net loss	$	(1,604	)	$	(3,430	)	$	(1,826	)
	Basic and diluted net loss per share — continuing operations	$	(0.06	)	$	(0.12	)	$	(0.06	)
	Basic and diluted net loss per share — Total	$	(0.06	)	$	(0.12	)	$	(0.06	)
	CONSOLIDATED STATEMENT OF CASH FLOWS	Year Ended December 31, 2013
	(In thousands)	Before			After			Effect of
		Change			Change			Change
	Cash flows from operating activities:
	Net income	$	36,258		$	40,155		$	3,897
	Amortization of intangibles	$	1,755		$	79		$	(1,676	)
	Deferred income taxes	$	(30,718	)	$	(36,850	)	$	(6,132	)
	Accounts payable	$	86		$	341		$	255
	Accrued compensation and other current liabilities	$	2,666		$	2,788		$	122
	Cash flows provided by (used in) investing activities:
	Additions to Intangibles	$	(3,534	)	$	0		$	3,534
	Supplemental disclosure of non-cash investing and financing activities:
	Amounts accrued for property and equipment	$	843		$	24		$	(819	)
	CONSOLIDATED STATEMENT OF CASH FLOWS	Year Ended December 31, 2012
	(In thousands)	As Previously			As Adjusted			Effect of
		Reported						Change
Cash flows from operating activities:
Net loss	$	(5,564	)	$	(7,197	)	$	(1,633	)
Amortization of intangibles	$	1,554		$	49		$	(1,505	)
Accounts payable	$	(18	)	$	8		$	26
Accrued compensation and other current liabilities	$	(685	)	$	(717	)	$	(32	)
Cash flows provided by (used in) investing activities:
Additions to Intangibles	$	(3,244	)	$	(100	)	$	3,144
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment	$	442		$	0		$	(442	)
CONSOLIDATED STATEMENT OF CASH FLOWS	Year Ended December 31, 2011
(In thousands)	As Previously			As Adjusted			Effect of
	Reported						Change
Cash flows from operating activities:
Net loss	$	(1,604	)	$	(3,430	)	$	(1,826	)
Amortization of intangibles	$	1,394		$	39		$	(1,355	)
Accounts payable	$	(24	)	$	(47	)	$	(23	)
Accrued compensation and other current liabilities	$	(785	)	$	(917	)	$	(132	)
Cash flows provided by (used in) investing activities:
Additions to Intangibles	$	(3,336	)	$	0		$	3,336
Supplemental disclosure of non-cash investing and financing activities:
Amounts accrued for property and equipment	$	1,222		$	775		$	(447	)
Advertising Expense	'
	Advertising expense was as follows:
		Year ended December 31,
		2013			2012			2011
		(In thousands)
	Advertising expense	$	322		$	152		$	192

Fair_Value_Disclosures_Tables

Fair Value Disclosures (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Schedule of Financial Instruments Measured at Fair Value on Recurring Basis	'
	Financial instruments measured at fair value on a recurring basis as of December 31, 2013 and December 31, 2012 are classified based on the valuation technique in the table below:
		December 31, 2013						Total
		Fair value measurements using
		Quoted Prices in		Significant		Significant
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Assets		Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	U.S. Treasury securities	$	0	$	56,976	$	0	$	56,976
	Money market funds		10,075		0		0		10,075
	Total assets at fair value	$	10,075	$	56,976	$	0	$	67,051
	The above table excludes $4.1 million of cash held in banks.
		December 31, 2012						Total
		Fair value measurements using
		Quoted Prices in		Significant		Significant
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Assets		Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	U.S. Treasury securities	$	0	$	38,988	$	0	$	38,988
	Money market funds		52		0		0		52
	Total assets at fair value	$	52	$	38,988	$	0	$	39,040
Schedule of Short-Term Investments	'
	Short-term Investments
		December 31, 2013
		Amortized		Gross		Gross		Fair Value
		Cost		Unrealized		Unrealized
				Holding		Holding
				Gains		Losses
		(In thousands)
	U.S. Treasury securities	$	56,966	$	10	$	0	$	56,976
	Total	$	56,966	$	10	$	0	$	56,976
		December 31, 2012
		Amortized		Gross		Gross		Fair Value
		Cost		Unrealized		Unrealized
				Holding		Holding
				Gains		Losses
		(In thousands)
	U.S. Treasury securities	$	38,980	$	8	$	0	$	38,988
	Total	$	38,980	$	8	$	0	$	38,988

Accounts_and_Other_Receivables1

Accounts and Other Receivables (Tables)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Schedule of Accounts and Other Receivables	'
		December 31,
		2013		2012
		(In thousands)
	Trade accounts receivable	$	320	$	1,528
	Receivables from vendors, lessor, and other		278		350
	Accounts and other receivables	$	598	$	1,878

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Schedule of Inventories	'
		December 31,
		2013		2012
		(In thousands)
	Raw materials and subassemblies	$	0	$	138
	Finished goods		0		3
	Inventories	$	0	$	141

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Schedule of Property and Equipment	'
		December 31,
		2013			2012
		(In thousands)
	Computer equipment and purchased software	$	3,595		$	3,748
	Machinery and equipment		704			654
	Furniture and fixtures		607			546
	Leasehold improvements		938			884
	Total		5,844			5,832
	Less accumulated depreciation		(4,900	)		(4,551	)
	Property and equipment, net	$	944		$	1,281

Intangibles_and_Other_Assets_T

Intangibles and Other Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Schedule of Intangibles and Other Assets	'
		December 31,
		2013			2012
		(In thousands)
	Purchased patents	$	5,731		$	5,724
	Other assets		289			192
	Gross intangibles and other assets		6,020			5,916
	Accumulated amortization of purchased patents		(5,639	)		(5,554	)
	Intangibles and other assets, net	$	381		$	362
Schedule of Amortization of Intangibles	'
	Amortization of intangibles was as follows:
		Year ended December 31,
		2013			2012			2011
		(In thousands)
	Amortization of Intangibles	$	79		$	49		$	39
Schedule of Estimated Remaining Annual Amortization Expense for Purchased Patents	'
	The table below includes estimated remaining annual amortization expense for purchased patents as of December 31, 2013.
		Estimated
		Amortization
		Expense
		(In thousands)
	2014	$	67
	2015		20
	2016		5
	Total	$	92

Other_Current_Liabilities_Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Schedule of Other Current Liabilities	'
			December 31,
			2013		2012
			(In thousands)
					(1) as adjusted
	Accrued legal		$	780	$	410
	Income taxes payable			41		30
	Deferred income taxes			0		97
	Other current liabilities			832		582
	Total other current liabilities		$	1,653	$	1,119
		-1	See Note 1 “Significant Accounting Policies — Intangible Assets” of Notes to Consolidated Financial Statemements

Longterm_Deferred_Revenue_Tabl

Long-term Deferred Revenue (Tables)	12 Months Ended
	Dec. 31, 2013
Deferred Revenue Disclosure [Abstract]	'
Schedule of Long-Term Deferred Revenue	'
	Long-term deferred revenue consisted of the following:
		December 31,
		2013		2012
		(In thousands)
	Deferred revenue for Sony Computer Entertainment	$	12,840	$	9,636
	Other deferred revenue		601		585
	Long-term deferred revenue	$	13,441	$	10,221

Commitments_Tables

Commitments (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Minimum Future Lease Payments Obligations	'
	Minimum future lease payments obligations are as follows:
		Operating Leases
		(In thousands)
	2014	$	928
	2015		781
	2016		659
	2017		165
	2018		167
	Total	$	2,700
Rent Expense	'
	Rent expense was as follows:
		Year ended December 31,
		2013		2012		2011
		(In thousands)
	Rent expense	$	549	$	550	$	30

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Schedule of Stock Options and Awards	'
		December 31,
		2013
	Common stock shares available for grant		1,811,121
	Common stock options outstanding		3,227,167
	Restricted stock awards outstanding		44,000
	Restricted stock units outstanding		668,056
Schedule of Employee Stock Purchase Plan	'
	The intrinsic value listed below is calculated as the difference between the market value on the date of purchase and the purchase price of the shares.
		Year Ended
		December 31,
		2013
	Shares purchased under ESPP		36,921
	Average price of shares purchased under ESPP	$	5.36
	Intrinsic value of shares purchased under ESPP	$	210,984
Schedule of Stock Options Activity	'
	The following table sets forth the summary of option activity under the Company’s stock option plans for the years ended December 31, 2013, 2012, and 2011:
		Number			Weighted			Weighted				Aggregate
		of Shares			Average			Average				Intrinsic
					Exercise Price			Fair Value				Value
								Of Options				of Options
								Granted				Exercised
												(In  thousands)
	Outstanding at January 1, 2011		4,000,526		$	6.26
	Granted		429,963			7.11		$	4.07
	Exercised		(560,132	)		4.09						$	2,485
	Cancelled		(602,519	)		6.99
	Outstanding at December 31, 2011		3,267,838			6.61
	Granted		425,150			6.1			3.35
	Exercised		(231,403	)		4.52							443
	Cancelled		(305,954	)		7.1
	Outstanding at December 31, 2012		3,155,631			6.65
	Granted		1,058,700			10.2			5.63
	Exercised		(956,633	)		6.68							5,774
	Cancelled		(30,531	)		8.75
	Outstanding at December 31, 2013		3,227,167			7.78
Schedule of Information Regarding Stock Options Outstanding	'
	Information regarding stock options outstanding at December 31, 2013, 2012, and 2011 is summarized below:
		Number of			Weighted			Weighted				Aggregate
		Shares			Average			Average				Intrinsic
					Exercise			Remaining				Value
					Price			Contractual				(In millions)
								Life (years)
	December 31, 2011
	Options outstanding		3,267,838		$	6.61			5.53			$	1.3
	Options vested and expected to vest using estimated forfeiture rates		3,151,950			6.62			5.44				1.3
	Options exercisable		2,377,683			6.99			4.61				0.8
	December 31, 2012
	Options outstanding		3,155,631		$	6.65			5.24			$	3.5
	Options vested and expected to vest using estimated forfeiture rates		3,019,979			6.67			5.17				3.4
	Options exercisable		2,329,987			6.91			4.69				2.5
	December 31, 2013
	Options outstanding		3,227,167		$	7.78			5.46			$	9.9
	Options vested and expected to vest using estimated forfeiture rates		2,994,044			7.61			5.41				9.6
	Options exercisable		1,774,546			6.67			4.95				7.5
Additional Information Regarding Options Outstanding	'
	Additional information regarding options outstanding as of December 31, 2013 is as follows:
		Options Outstanding						Options Exercisable
	Range of	Number		Weighted	Weighted			Number		Weighted
	Exercise	Outstanding		Average	Average			Exercisable		Average
	Prices			Remaining	Exercise					Exercise
				Contractual	Price					Price
				Life (Years)
	$  2.70 - $3.81	25,630		5.2	$	2.84		25,630		$	2.84
	3.85 - 3.85	600,000		5.87		3.85		600,000			3.85
	4.17 - 6.11	417,541		4.97		5.49		335,700			5.49
	6.12 - 6.39	378,000		5.55		6.2		145,265			6.18
	6.41 - 8.61	437,184		4.77		7.48		361,832			7.58
	8.71 - 9.20	153,712		3.92		9.13		122,119			9.11
	9.53 - 9.53	850,000		6.18		9.53		0			0
	10.24 - 14.80	250,100		5.72		13.79		69,000			14.02
	15.12 - 15.12	15,000		3.62		15.12		15,000			15.12
	16.57 - 16.57	100,000		3.74		16.57		100,000			16.57
	$2.70 - $16.57	3,227,167		5.46	$	7.78		1,774,546		$	6.67
Schedule of Restricted Stock Units Activity	'
	RSU activity for the years ended December 31, 2013, 2012, and 2011 was as follows:
		Number			Weighted			Fair Value
		of Shares			Average			of Released
					Grant Date			RSU’s
					Fair Value			(In thousands)
	Outstanding at January 1, 2011		417,923
	Awarded		243,908		$	6.61
	Released		(159,384	)				$	1,163
	Forfeited		(94,682	)
	Outstanding at December 31, 2011		407,765
	Awarded		555,911			6.64
	Released		(203,519	)					1,128
	Forfeited		(51,506	)
	Outstanding at December 31, 2012		708,651
	Awarded		294,150			7.12
	Released		(303,882	)					2,806
	Forfeited		(30,863	)
	Outstanding at December 31, 2013		668,056
Schedule of Information Regarding Restricted Stock Unit Outstanding	'
	Information regarding RSU’s at December 31, 2013, 2012, and 2011 is summarized below:
		Number of			Weighted			Aggregate				Fair Value
		Shares			Average			Intrinsic				(In millions)
					Remaining			Value
					Contractual			(In millions)
					Life (years)
	December 31, 2011
	RSUs outstanding		407,765			0.95		$	2.1			$	2.1
	RSUs vested and expected to vest using estimated forfeiture rates		336,454			0.92		$	1.7
	December 31, 2012
	RSUs outstanding		708,651			1.09		$	4.9			$	4.9
	RSUs vested and expected to vest using estimated forfeiture rates		588,170			1.05		$	4
	December 31, 2013
	RSUs outstanding		668,056			0.91		$	6.9			$	6.9
	RSUs vested and expected to vest using estimated forfeiture rates		583,711			0.89		$	6.1
Schedule of Restricted Stock Awards Activity	'
	Restricted stock award activity for the years ended December 31, 2013, 2012, and 2011 was as follows:
		Number			Weighted			Total
		of Shares			Average			Fair
					Grant Date			Value of
					Fair Value			Awards
								Released
								(In thousands)
	Outstanding at January 1, 2011		18,000		$	5.59
	Awarded		30,000			6.61
	Released		(21,000	)		5.74		$	159
	Forfeited		(9,000	)		6.61
	Outstanding at December 31, 2011		18,000			6.61
	Awarded		57,750			5.7
	Released		(31,750	)		6.72			171
	Forfeited		0
	Outstanding at December 31, 2012		44,000			5.34
	Awarded		44,000			14.09
	Released		(44,000	)		5.34			676
	Forfeited		0
	Outstanding at December 31, 2013		44,000			14.09
Schedule of Stock Option and Employee Stock Purchase Plan, Valuation Assumptions	'
	The assumptions used to value option grants and shares under the ESPP are as follows:
		Options					Employee Stock Purchase Plan
		2013		2012	2011		2013	2012		2011
	Expected life (in years)	4.9		4.5	4.5		0.5	0.5		0.5
	Interest rate	0.80%		0.70%	0.80%		0.10%	0.10%		0.20%
	Volatility	70%		70%	72%		67%	62%		45%
	Dividend yield	0.00%		0.00%	0.00%		0.00%	0.00%		0.00%
Schedule of Stock-Based Compensation	'
	Total stock-based compensation recognized in the consolidated statements of operations is as follows:
		Year Ended December 31,
		2013			2012			2011
	Income Statement Classifications	(In thousands)
	Sales and marketing	$	747		$	547		$	526
	Research and development		1,040			756			825
	General and administrative		2,857			1,843			2,204
	Total	$	4,644		$	3,146		$	3,555

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Changes in Accumulated Other Comprehensive Income (Loss)	'
	The changes in accumulated other comprehensive income (loss) are included in the table below.
		Year Ended December 31, 2013
		Unrealized Gains		Foreign		Total
		and Losses on		Currency
		Available-for Sale		Items
		Securities
		(In thousands)
	Beginning balance	$	8	$	101	$	109
	Other comprehensive income (loss) before reclassifications		3		0		3
	Amounts reclassified from accumulated other comprehensive income (loss)		0		0		0
	Net current period other comprehensive income (loss)		3		0		3
	Ending Balance	$	11	$	101	$	112

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Income Tax Benefit (Provisions) from Continuing Operations	'
	Income tax benefit (provisions) from continuing operations consisted of the following:
			Years Ended December 31,
			2013			2012			2011
			(In thousands)
						(1) as adjusted			(1) as adjusted
	Income (loss) from continuing operations before benefit (provision) for income taxes		$	3,672		$	(6,558)		$	(1,675	)
	Benefit (provision) for income taxes			36,483			-792			(1,816	)
	Effective tax rate			(993.5	)%		(12.1	)%		(108.4	)%
	(1) See Note 1 “Significant Accounting Policies — Intangible Assets” of Notes to Consolidated Financial Statements.
Details of Pre-Tax Book Income (Loss) from Continuing Operations	'
	The Company reported pre-tax book income (loss) from continuing operations of:
			Years Ended December 31,
			2013			2012			2011
			(In thousands)
						(1) as adjusted			(1) as adjusted
	Domestic		$	3,349		$	(2,175	)	$	-2,034
	Foreign			323			(4,383	)		359
	Total		$	3,672		$	(6,558)		$	(1,675)
	(1) See Note 1 “Significant Accounting Policies — Intangible Assets” of Notes to Consolidated Financial Statements.
Summary of Benefit (Provision) for Income Taxes from Continuing Operations	'
	The benefit (provision) for income taxes from continuing operations consisted of the following:
			Years Ended December 31,
			2013			2012			2011
			(In thousands)
	Current:
	United States federal		$	(300	)	$	91		$	115
	Foreign			(12	)		(902	)		(1,923	)
	State and local			(55	)		19			(8	)
	Total current		$	-367		$	(792	)	$	(1,816	)
	Deferred:
	United States federal			36,190			0			0
	Foreign			660			0			0
	State and local			0			0			0
	Total deferred			36,850			0			0
			$	36,483		$	-792		$	(1,816	)
Details of Significant Components of Net Deferred Tax Assets and Liabilities	'
	Significant components of the net deferred tax assets and liabilities consisted of:
			December 31,
			2013			2012
			(In thousands)
	Deferred tax assets:			(1) as adjusted)
	Net operating loss carryforwards		$	23,652		$	24,211
	State income taxes			1			(7	)
	Deferred revenue			3,588			4,978
	Research and development and other credits			8,201			9,263
	Reserves and accruals recognized in different periods			4,994			4,606
	Basis difference in investment			967			1,032
	Capitalized R&D expenses			1,535			1,566
	Depreciation and amortization			887			1,008
	Other			120			159
	Total deferred tax assets			43,945			46,816
	Valuation allowance			(7,095	)		(46,816	)
	Net deferred tax assets		$	36,850		$	0
	(1) See Note 1 “Significant Accounting Policies—Intangible Assets” of Notes to the Consolidated Financial Statements.
Reconciliation between Benefit (Provision) for Income Taxes at Statutory Rate and Effective Tax Rate	'
	For purposes of the reconciliation between the benefit (provision) for income taxes at the statutory rate and the effective tax rate, a national U.S. 35% rate is applied as follows:
			2013			2012			2011
						(1) as adjusted			(1) as adjusted
	Federal statutory tax rate			35	%		35	%		35	%
	State taxes, net of federal benefit			0.1	%		2.3	%		5	%
	Foreign withholding			8.2	%		(13.0	)%		(112.6	)%
	Stock compensation expense			2.5	%		(2.6	)%		(9.3	)%
	Meals & entertainment			0.3	%		(0.2	)%		(0.9	)%
	Foreign rate differential			(1.7	)%		(2.8	)%		(5.3	)%
	Prior year true-up items			0.1	%		0.1	%		(3.7	)%
	Tax reserves			1.3	%		(0.1	)%		(0.6	)%
	Benefit of discontinued operations			0	%		1.5	%		2.3	%
	Other			0	%		0.3	%		4.9	%
	Valuation allowance			(1039.3	)%		(32.6	)%		(23.2	)%
	Effective tax rate			(993.5	)%		(12.1	)%		(108.4	)%
	-1	See Note 1 “Significant Accounting Policies—Intangible Assets” of Notes to Consolidated Financial Statements.
Details of Beginning and Ending Amount of Gross Unrecognized Tax Benefits	'
	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows:
			2013			2012			2011
			Unrecognized			Unrecognized			Unrecognized
			Tax Benefits			Tax Benefits			Tax Benefits
			(In thousands)
	Balance at beginning of year		$	628		$	628		$	628
	Gross increases for tax positions of prior years			896			0			0
	Gross decreases for tax positions of prior years			0			0			0
	Gross increases for tax positions of current year			110			0			0
	Settlements			0			0			0
	Lapse of statute of limitations			0			0			0
	Balance at end of year		$	1,634		$	628		$	628

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Reconciliation used in Computing Basic and Diluted Net Income (Loss) per Share	'
	The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share:
			Years Ended December 31,
			2013		2012		2011
			(In thousands, except per share amounts)
	Numerator:					(1) as adjusted		(1) as adjusted
	Income (loss) from continuing operations		$	40,155	$	-7,350	$	-3,491
	Gain from discontinued operations, net of tax			0		153		61
	Net income (loss) used in computing basic and diluted net income (loss) per share		$	40,155	$	-7,197	$	-3,430
	Denominator:
	Shares used in computation of basic and diluted net income (loss) per share (weighted average common shares outstanding)			28,190		27,735		28,564
	Dilutive potential common shares:
	Restricted Stock and RSUs			343		0		0
	Stock options			805		0		0
	Shares used in computation of diluted net income (loss) per share			29,338		27,735		28,564
	Basic net income (loss) per share from:
	Continuing operations		$	1.42	$	-0.27	$	-0.12
	Discontinued operations			0		0.01		0
	Total		$	1.42	$	-0.26	$	-0.12
	Diluted net income (loss) per share from:
	Continuing operations		$	1.37	$	-0.27	$	-0.12
	Discontinued operations			0		0.01		0
	Total		$	1.37	$	-0.26	$	-0.12
	-1	See Note 1 “Significant Accounting Policies—Intangible Assets” of Notes to Consolidated Financial Statements.
Schedule of Outstanding Securities	'
	These outstanding securities consisted of the following:
			Year Ended December 31,
			2012		2011
	Outstanding stock options			3,155,631		3,267,838
	Unvested restricted stock awards			44,000		18,000
	Unvested restricted stock units			708,651		407,765

Employee_Benefit_Plan_Tables

Employee Benefit Plan (Tables)	12 Months Ended
	Dec. 31, 2013
Postemployment Benefits [Abstract]	'
Details of Company Contribution to Plan	'
	Beginning in January 2008, the Company matched 25% of the employee’s contribution up to $2,000 for the year.
		Year ended December 31,
		2013		2012		2011
		(In thousands)
	Company contribution to 401 (k) plan	$	91	$	77	$	85

Segment_Reporting_Geographic_I1

Segment Reporting, Geographic Information, and Significant Customers (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Summary of Revenues by Geographic Areas	'
	The following is a summary of revenues by geographic areas. Revenues are broken out geographically by the ship-to location of the customer. Geographic revenue as a percentage of total revenues by region was as follows:
		Years Ended December 31,
		2013			2012			2011
	North America		28	%		41	%		42	%
	Europe		4	%		13	%		13	%
	Far East		68	%		46	%		45	%
	Rest of the world		0	%		0	%		0	%
	Total		100	%		100	%		100	%
Summary of Geographic Revenue as Percentage of Total Revenues by Country	'
	Geographic revenue as a percentage of total revenues by country was as follows:
		Years Ended December 31,
		2013			2012			2011
	United States of America		26	%		38	%		40	%
	Korea		58	%		36	%		37	%
	Japan		7	%			*			*
	Other countries (none of which is more than 10% of revenues)		9	%		26	%		23	%
	Total		100	%		100	%		100	%
	* Represents less than 10% of the Company’s revenue and is included below.
Summary of Customers Comprising More Than 10% in Net Revenue	'
	Customers comprising 10% or greater of the Company’s net revenues are summarized as follows:
		Years Ended December 31,
		2013			2012			2011
	Samsung Electronics		47	%		24	%		20	%
	Customer B			*			*		12	%
	Customer C			*			*			*
	Customer D			*			*			*
	Customer E			*			*			*
	Customer F			*			*			*
	Total		47	%		24	%		32	%
	* Revenue derived from customer represented less than 10% for the period.
Summary of Customers Comprising 10% or Greater of Outstanding Accounts and Other Receivable	'
	Customers comprising 10% or greater of the Company’s outstanding accounts and other receivable are summarized as follows:
		December 31,
		2013			2012			2011
	Samsung Electronics			*			*			*
	Customer B			*		33	%			*
	Customer C			*		38	%		14	%
	Customer D		11	%			*		14	%
	Customer E			*		10	%			*
	Customer F		28	%			*			*
	* Represents less than 10% of the Company’s outstanding accounts and other receivables.

Quarterly_Results_of_Operation1

Quarterly Results of Operations (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Consolidated Statement of Operations Data	'
	The following table presents certain consolidated statement of operations data for the Company’s eight most recent quarters:
		Dec 31,			Sept 30,			June 30,			Mar 31,			Dec 31,			Sept 30,			June 30,			Mar 31,
		2013			2013			2013			2013			2012			2012			2012			2012
					(2) as			(2) as			(2) as						(2) as			(2) as			(2) as
					adjusted			adjusted			adjusted						adjusted			adjusted			adjusted
		(In thousands, except per share data)
	Revenues (1)	$	12,067		$	11,342		$	10,201		$	13,860		$	8,860		$	7,142		$	6,476		$	9,691
	Gross profit		11,991			11,231			10,074			13,712			8,474			6,869			6,262			9,376
	Operating income (loss) (2)		648			814			448			1,694			(373	)		(3,456	)		(2,762	)		(137	)
	Income (loss) from continuing operations before provision for taxes (2)		636			856			476			1,704			(347	)		(3,390	)		(2,694	)		(127	)
	Benefit (provision) for income taxes (4)		36,767			(257	)		(10	)		(17	)		(55	)		(118	)		(66	)		(553	)
	Income (loss) from continuing operations (2)		37,403			599			466			1,687			(402	)		(3,508	)		(2,760	)		(680	)
	Net income from discontinued operations (net of tax)		0			0			0			0			0			0			153			0
	Net income (loss) (2)		37,403			599			466			1,687			(402	)		(3,508	)		(2,607	)		(680	)
	Basic net income (loss) per share (2) (3)
	Continuing operations	$	1.31		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.1		$	-0.02
	Discontinued operations		0			0			0			0			0			0			0.01			0
	Total	$	1.31		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.09		$	-0.02
	Shares used in calculating basic net income (loss) per share		28,614			28,558			28,146			27,424			27,288			27,658			28,058			27,941
	Diluted net income (loss) per share (2) (3)
	Continuing operations	$	1.26		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.1		$	-0.02
	Discontinued operations		0			0			0			0			0			0			0.01			0
	Total	$	1.26		$	0.02		$	0.02		$	0.06		$	-0.01		$	-0.13		$	-0.09		$	-0.02
	Shares used in calculating diluted net income (loss) per share		29,675			29,653			29,293			28,294			27,288			27,658			28,058			27,941
	(1) The Company typically experiences seasonally higher revenue in the first calendar quarter due to the reporting of holiday sales from some of our customers.
	(2) Amounts have been impacted by the Company’s change in accounting method for the treatment of external patent-related costs. The Company no longer capitalizes external legal filing, and continuation or annuity fees associated with patent and trademark applications. under the new method of accounting, external patent-related costs are expensed as incurred and classified as general and administrative expenses in our consolidated statement of operations. See Note 1 to the consolidated financial statements for additional information regarding this change in accounting method.
	(3) The quarterly earnings per share information is calculated separately for each period. Therefore, the sum of such quarterly per share amounts may differ from the total for the year.
	(4) In the fourth quarter of 2014, there was an increase in the benefit from taxes primarily due to the partial release of our Federal deferred and foreign income tax asset valuation allowance based on the assessment of our ability to utilize these deferred income tax assets. See Note 13 to the consolidated financial statements for additional information on our income taxes.
Impact of Change in Accounting Method	'
	The impact of this accounting method change revised our previously reported information by the following (in thousands, except per share amounts):
		Dec 31,			Sept 30,			June 30,			Mar 31,			Dec 31,			Sept 30,			June 30,			Mar 31,
		2013			2013			2013			2013			2012			2012			2012			2012
		(In thousands, except per share data)
	Income (loss) from continuing operations		(752	)		(607	)		(310	)		(566	)		(202	)		(518	)		(452	)		(461	)
	Benefit (provision) for income taxes		6,132			0			0			0			0			0			0			0
	Net income (loss)		5,380			(607	)		(310	)		(566	)		(202	)		(518	)		(452	)		(461	)
	Basic net income (loss) per share		0.19			(0.02	)		(0.01	)		(0.02	)		(0.01	)		(0.02	)		(0.02	)		(0.02	)
	Diluted net income (loss) per share		0.18			(0.02	)		(0.01	)		(0.02	)		(0.01	)		(0.02	)		(0.02	)		(0.02	)
	(1) For the quarter ended December 31, 2013, under the Company’s historical method of accounting for external costs associated with the patent application process, the income tax benefit from continuing operations would have been $30,635 as compared to $36,767 under the Company’s new accounting method. The change in method had no impact on the income tax provision from continuing operations for all quarters prior to the December 31, 2013 quarter as the Company was in a full valuation allowance position for those quarters.

Significant_Accounting_Policie3

Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Significant Accounting Policies [Line Items]	'	'
Estimated useful life of assets	'10 years	'
Net intangible balance	$92,000	'
Accumulated amortization	5,639,000	5,554,000
Accumulated deficit	-86,929,000	-127,084,000	[1]
Product warranty grants description	'The Company typically grants to customers a warranty that guarantees the products will substantially conform to the Company's current specifications for generally three to twelve months from the delivery date pursuant to the terms of the arrangement.	'
Cost capitalized	0	'
Previously Reported [Member] | Change in Accounting Method [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Net intangible balance	17,600,000	'
Accumulated amortization	6,100,000	'
Previously Reported [Member] | Change in Accounting Method [Member] | Unissued Patent Applications [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Intangible assets, gross	10,200,000	'
Previously Reported [Member] | Change in Accounting Method [Member] | Issued Patents [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Intangible assets, gross	13,500,000	'
Quarterly Impact of Changes in accounting Method [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Accumulated deficit	-11,466,000	-15,363,000
As Previously Reported [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Accumulated deficit	-75,463,000	-111,721,000
As Adjusted [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Accumulated deficit	($86,929,000)	($127,084,000)
Maximum [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Cash equivalents maturity period	'3 months	'
Period of royalties notification	'45 days	'
Product warranty period	'12 months	'
Minimum [Member]	'	'
Significant Accounting Policies [Line Items]	'	'
Short-term investments maturity period	'90 days	'
Period of royalties notification	'30 days	'
Product warranty period	'3 months	'
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Significant_Accounting_Policie4

Significant Accounting Policies - Estimated Useful Lives of Property and Equipment (Detail)	12 Months Ended
	Dec. 31, 2013
Computer Equipment and Purchased Software [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property and equipment	'3 years
Furniture and Fixtures [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property and equipment	'5 years
Minimum [Member] | Machinery and Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property and equipment	'3 years
Maximum [Member] | Machinery and Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property and equipment	'5 years

Significant_Accounting_Policie5

Significant Accounting Policies - Impact of the Change in Accounting Method on the Previously Issued Balance Sheet, Statements of Operations and the Statements of Cash Flows (Detail) (USD $)	3 Months Ended			12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]	'	'		'	'		'
Deferred income taxes	$7,784	$0	[1]	$7,784	$0	[1]	'
Deferred income tax assets	29,066	97	[1]	29,066	97	[1]	'
Intangibles and other assets, net	381	362	[1]	381	362	[1]	'
Other current liabilities	1,653	1,119	[1]	1,653	1,119	[1]	'
Accumulated deficit	-86,929	-127,084	[1]	-86,929	-127,084	[1]	'
General and administrative	'	'		23,104	22,464	[1]	15,749	[1]
Amortization of intangibles	'	'		79	49	[1]	39	[1]
Benefit (provision) for income taxes.	36,767	-55		36,483	-792	[1]	-1,816	[1]
Income from continuing operations	37,403	-402		40,155	-7,350	[1]	-3,491	[1]
Net income	37,403	-402		40,155	-7,197	[1]	-3,430	[1]
Basic net income per share - continuing operations	$1.31	($0.01)		$1.42	($0.27)	[1]	($0.12)	[1]
Basic net income per share - Total	$1.31	($0.01)		$1.42	($0.26)	[1]	($0.12)	[1]
Diluted net income per share - continuing operations	$1.26	($0.01)		$1.37	($0.27)	[1]	($0.12)	[1]
Diluted net income per share - Total	$1.26	($0.01)		$1.37	($0.26)	[1]	($0.12)	[1]
Cash flows from operating activities:	'	'		'	'		'
Net income	37,403	-402		40,155	-7,197	[1]	-3,430	[1]
Amortization of intangibles	'	'		79	49	[1]	39	[1]
Deferred income taxes	'	'		36,850	0	[1]	0	[1]
Accounts payable	'	'		341	8	[1]	-47	[1]
Accrued compensation and other current liabilities	'	'		2,788	-717	[1]	-917	[1]
Cash flows provided by (used in) investing activities:	'	'		'	'		'
Additions to intangibles	'	'		0	-100	[1]	0	[1]
Supplemental disclosure of non-cash investing and financing activities:	'	'		'	'		'
Amounts accrued for property and equipment	'	'		24	0	[1]	775	[1]
As Previously Reported [Member]	'	'		'	'		'
Condensed Financial Statements, Captions [Line Items]	'	'		'	'		'
Deferred income taxes	7,779	165		7,779	165		'
Deferred income tax assets	22,939	0		22,939	0		'
Intangibles and other assets, net	17,979	15,725		17,979	15,725		'
Other current liabilities	'	1,022		'	1,022		'
Deferred income tax liabilities	'	165		'	165		'
Accumulated deficit	-75,463	-111,721		-75,463	-111,721		'
General and administrative	'	'		19,193	19,326		12,568
Amortization of intangibles	'	'		1,755	1,554		1,394
Benefit (provision) for income taxes.	'	'		30,351	'		'
Income from continuing operations	'	'		36,258	-5,717		-1,665
Net income	'	'		36,258	-5,564		-1,604
Basic net income per share - continuing operations	'	'		$1.29	'		'
Basic and diluted net loss per share - continuing operations	'	'		'	($0.21)		($0.06)
Basic net income per share - Total	'	'		$1.29	'		'
Basic and diluted net loss per share - Total	'	'		'	($0.20)		($0.06)
Diluted net income per share - continuing operations	'	'		$1.24	'		'
Diluted net income per share - Total	'	'		$1.24	'		'
Cash flows from operating activities:	'	'		'	'		'
Net income	'	'		36,258	-5,564		-1,604
Amortization of intangibles	'	'		1,755	1,554		1,394
Deferred income taxes	'	'		-30,718	'		'
Accounts payable	'	'		86	-18		-24
Accrued compensation and other current liabilities	'	'		2,666	-685		-785
Cash flows provided by (used in) investing activities:	'	'		'	'		'
Additions to intangibles	'	'		-3,534	-3,244		-3,336
Supplemental disclosure of non-cash investing and financing activities:	'	'		'	'		'
Amounts accrued for property and equipment	'	'		843	442		1,222
As Adjusted [Member]	'	'		'	'		'
Condensed Financial Statements, Captions [Line Items]	'	'		'	'		'
Deferred income taxes	7,784	0		7,784	0		'
Deferred income tax assets	29,066	97		29,066	97		'
Intangibles and other assets, net	381	362		381	362		'
Other current liabilities	'	1,119		'	1,119		'
Deferred income tax liabilities	'	0		'	0		'
Accumulated deficit	-86,929	-127,084		-86,929	-127,084		'
General and administrative	'	'		23,104	22,464		15,749
Amortization of intangibles	'	'		79	49		39
Benefit (provision) for income taxes.	'	'		36,483	'		'
Income from continuing operations	'	'		40,155	-7,350		-3,491
Net income	'	'		40,155	-7,197		-3,430
Basic net income per share - continuing operations	'	'		$1.42	'		'
Basic and diluted net loss per share - continuing operations	'	'		'	($0.27)		($0.12)
Basic net income per share - Total	'	'		$1.42	'		'
Basic and diluted net loss per share - Total	'	'		'	($0.26)		($0.12)
Diluted net income per share - continuing operations	'	'		$1.37	'		'
Diluted net income per share - Total	'	'		$1.37	'		'
Cash flows from operating activities:	'	'		'	'		'
Net income	'	'		40,155	-7,197		-3,430
Amortization of intangibles	'	'		79	49		39
Deferred income taxes	'	'		-36,850	'		'
Accounts payable	'	'		341	8		-47
Accrued compensation and other current liabilities	'	'		2,788	-717		-917
Cash flows provided by (used in) investing activities:	'	'		'	'		'
Additions to intangibles	'	'		0	-100		0
Supplemental disclosure of non-cash investing and financing activities:	'	'		'	'		'
Amounts accrued for property and equipment	'	'		24	0		775
Quarterly Impact of Changes in accounting Method [Member]	'	'		'	'		'
Condensed Financial Statements, Captions [Line Items]	'	'		'	'		'
Deferred income taxes	5	-165		5	-165		'
Deferred income tax assets	6,127	97		6,127	97		'
Intangibles and other assets, net	-17,598	-15,363		-17,598	-15,363		'
Other current liabilities	'	97		'	97		'
Deferred income tax liabilities	'	-165		'	-165		'
Accumulated deficit	-11,466	-15,363		-11,466	-15,363		'
General and administrative	'	'		3,911	3,138		3,181
Amortization of intangibles	'	'		-1,676	-1,505		-1,355
Benefit (provision) for income taxes.	6,132	0		6,132	'		'
Income from continuing operations	-752	-202		3,897	-1,633		-1,826
Net income	5,380	-202		3,897	-1,633		-1,826
Basic net income per share - continuing operations	$0.19	($0.01)		$0.13	'		'
Basic and diluted net loss per share - continuing operations	'	'		'	($0.06)		($0.06)
Basic net income per share - Total	'	'		$0.13	'		'
Basic and diluted net loss per share - Total	'	'		'	($0.06)		($0.06)
Diluted net income per share - continuing operations	$0.18	($0.01)		$0.13	'		'
Diluted net income per share - Total	'	'		$0.13	'		'
Cash flows from operating activities:	'	'		'	'		'
Net income	5,380	-202		3,897	-1,633		-1,826
Amortization of intangibles	'	'		-1,676	-1,505		-1,355
Deferred income taxes	'	'		-6,132	'		'
Accounts payable	'	'		255	26		-23
Accrued compensation and other current liabilities	'	'		122	-32		-132
Cash flows provided by (used in) investing activities:	'	'		'	'		'
Additions to intangibles	'	'		3,534	3,144		3,336
Supplemental disclosure of non-cash investing and financing activities:	'	'		'	'		'
Amounts accrued for property and equipment	'	'		($819)	($442)		($447)
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Significant_Accounting_Policie6

Significant Accounting Policies - Advertising Expense (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'
Advertising expense	$322	$152	$192

Fair_Value_Disclosures_Schedul

Fair Value Disclosures - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	$67,051	$39,040
U.S. Treasury Securities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	56,976	38,988
Money Market Funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	10,075	52
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	10,075	52
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury Securities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	10,075	52
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	56,976	38,988
Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Securities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	56,976	38,988
Significant Other Observable Inputs (Level 2) [Member] | Money Market Funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Treasury Securities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Money Market Funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Total assets at fair value	$0	$0

Fair_Value_Disclosures_Additio

Fair Value Disclosures - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]	'	'
Cash held in banks	$4.10	$4.50
Period for contractual maturities of the Company's available-for-sale securities	'1 Year	'1 Year

Fair_Value_Disclosures_Schedul1

Fair Value Disclosures - Schedule of Short-Term Investments (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Short-term Investments, Amortized Cost	$56,966	$38,980
Short-term Investments, Gross Unrealized Holding Gains	10	8
Short-term Investments, Gross Unrealized Holding Losses	0	0
Short-term Investments, Fair Value	56,976	38,988	[1]
U.S. Treasury Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Short-term Investments, Amortized Cost	56,966	38,980
Short-term Investments, Gross Unrealized Holding Gains	10	8
Short-term Investments, Gross Unrealized Holding Losses	0	0
Short-term Investments, Fair Value	$56,976	$38,988
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Accounts_and_Other_Receivables2

Accounts and Other Receivables - Schedule of Accounts and Other Receivables (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Trade accounts receivable	$320	$1,528
Receivables from vendors, lessor, and other	278	350
Accounts and other receivables	$598	$1,878	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Inventories_Schedule_of_Invent

Inventories - Schedule of Inventories (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw materials and subassemblies	$0	$138
Finished goods	0	3
Inventories	$0	$141	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Property_and_Equipment_Schedul

Property and Equipment - Schedule of Property and Equipment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property Plant And Equipment [Abstract]	'	'
Computer equipment and purchased software	$3,595	$3,748
Machinery and equipment	704	654
Furniture and fixtures	607	546
Leasehold improvements	938	884
Total	5,844	5,832
Less accumulated depreciation	-4,900	-4,551
Property and equipment, net	$944	$1,281	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Intangibles_and_Other_Assets_S

Intangibles and Other Assets - Schedule of Intangibles and Other Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Intangibles And Other Assets [Abstract]	'	'
Purchased patents	$5,731	$5,724
Other assets	289	192
Gross intangibles and other assets	6,020	5,916
Accumulated amortization of purchased patents	-5,639	-5,554
Intangibles and other assets, net	$381	$362	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Intangibles_and_Other_Assets_A

Intangibles and Other Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013
Intangibles And Other Assets [Abstract]	'
Patents, estimated useful lives	'10 years

Intangibles_and_Other_Assets_S1

Intangibles and Other Assets - Schedule of Amortization of Intangibles (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Intangibles And Other Assets [Abstract]	'	'		'
Amortization of intangibles	$79	$49	[1]	$39	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Intangibles_and_Other_Assets_S2

Intangibles and Other Assets - Schedule of Estimated Remaining Annual Amortization Expense for Purchased Patents (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Intangibles And Other Assets [Abstract]	'
2014	$67
2015	20
2016	5
Total	$92

Other_Current_Liabilities_Sche

Other Current Liabilities - Schedule of Other Current Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Liabilities Current [Abstract]	'	'
Accrued legal	$780	$410
Income taxes payable	41	30
Deferred income taxes	0	97
Other current liabilities	832	582
Total other current liabilities	$1,653	$1,119	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Longterm_Deferred_Revenue_Sche

Long-term Deferred Revenue - Schedule of Long-Term Deferred Revenue (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred Revenue Disclosure [Abstract]	'	'
Deferred revenue for Sony Computer Entertainment	$12,840	$9,636
Other deferred revenue	601	585
Long-term deferred revenue	$13,441	$10,221	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Commitments_Additional_Informa

Commitments - Additional Information (Detail) (USD $)	12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013
			Lease Agreements [Member]	Lease Agreements [Member]	Lease Property One [Member]
			sqft	sqft
Real Estate Properties [Line Items]	'	'	'	'	'
Operating lease expiration year	'2018	'	'	'	'
Operating lease facility area	'	'	48,000	33,000	'
Expiration of terminated prior lease	'	'	30-Jun-14	'	31-Dec-16
Income from lease move incentive	'	$350,000	'	'	'
Deferred rent credit	'	$294,000	'	'	'

Commitments_Minimum_Future_Lea

Commitments - Minimum Future Lease Payments Obligations (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Operating Leases	'
Operating Leases, 2014	$928
Operating Leases, 2015	781
Operating Leases, 2016	659
Operating Leases, 2017	165
Operating Leases, 2018	167
Operating Leases, Total	$2,700

Commitments_Rent_Expense_Detai

Commitments - Rent Expense (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Rent expense	'	'	'
Rent expense	$549	$550	$30

Stockbased_Compensation_Additi

Stock-based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of options for every share issued	1.75	'
Discount from fair market value on purchase date	85.00%	'
Maximum number of shares per employee	2,000	'
Employee stock purchase plan offering period	'6 months	'
Maximum value of shares per employee	$25,000	'
Common stock reserved for issuance	1,000,000	'
Shares purchased by employee since inception of ESPP	519,440	'
Shares purchased under ESPP	36,921	25,628
Expected dividend yield in option-pricing model	0.00%	'
Unrecognized compensation cost	$6,800,000	'
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock-based payment award vesting period (years)	'4 years	'
Unrecognized compensation cost, recognized over an estimated weighted-average period (years)	'3 years 3 months 22 days	'
Stock Options [Member] | Maximum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock-based payment award expiration period (years)	'10 years	'
Stock Options [Member] | Minimum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock-based payment award expiration period (years)	'5 years	'
Restricted Stock Awards [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock-based payment award vesting period (years)	'1 year	'
Unrecognized compensation cost, recognized over an estimated weighted-average period (years)	'1 year 6 months 26 days	'
Restricted Stock Units [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock-based payment award vesting period (years)	'3 years	'
Unrecognized compensation cost, recognized over an estimated weighted-average period (years)	'5 months 5 days	'

Stockbased_Compensation_Schedu

Stock-based Compensation - Schedule of Stock Options and Awards (Detail)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock shares available for grant	1,811,121	'	'	'
Common stock options outstanding	3,227,167	3,155,631	3,267,838	4,000,526
Stock Options [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock options outstanding	3,227,167	'	'	'
Restricted Stock Awards [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Restricted stock awards and units outstanding	44,000	44,000	18,000	18,000
Restricted Stock Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Restricted stock awards and units outstanding	668,056	708,651	407,765	417,923

Stockbased_Compensation_Schedu1

Stock-based Compensation - Schedule of Employee Stock Purchase Plan (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Shares purchased under ESPP	36,921	25,628
Average price of shares purchased under ESPP	$5.36	'
Intrinsic value of shares purchased under ESPP	$210,984	'

Stockbased_Compensation_Schedu2

Stock-based Compensation - Schedule of Stock Options Activity (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Beginning outstanding balance	3,155,631	3,267,838	4,000,526
Granted	1,058,700	425,150	429,963
Exercised	-956,633	-231,403	-560,132
Cancelled	-30,531	-305,954	-602,519
Ending outstanding balance	3,227,167	3,155,631	3,267,838
Weighted Average Exercise Price, Beginning balance	$6.65	$6.61	$6.26
Weighted Average Exercise Price, Granted	$10.20	$6.10	$7.11
Weighted Average Exercise Price, Exercised	$6.68	$4.52	$4.09
Weighted Average Exercise Price, Cancelled	$8.75	$7.10	$6.99
Weighted Average Exercise Price, Ending balance	$7.78	$6.65	$6.61
Weighted Average Fair Value Of Options Granted	$5.63	$3.35	$4.07
Aggregate Intrinsic Value of Options Exercised	$5,774	$443	$2,485

Stockbased_Compensation_Schedu3

Stock-based Compensation - Schedule of Information Regarding Stock Options Outstanding (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'	'
Options outstanding, Number of Shares	3,227,167	3,155,631	3,267,838	4,000,526
Options vested and expected to vest using estimated forfeiture rates, Number of Shares	2,994,044	3,019,979	3,151,950	'
Options exercisable, Number of Shares	1,774,546	2,329,987	2,377,683	'
Options outstanding, Weighted Average Exercise Price	$7.78	$6.65	$6.61	$6.26
Options vested and expected to vest using estimated forfeiture rates, Weighted Average Exercise Price	$7.61	$6.67	$6.62	'
Options exercisable, Weighted Average Exercise Price	$6.67	$6.91	$6.99	'
Options outstanding, Weighted Average Remaining Contractual Life (years)	'5 years 5 months 16 days	'5 years 2 months 27 days	'5 years 6 months 11 days	'
Options vested and expected to vest using estimated forfeiture rates, Weighted Average Remaining Contractual Life (years)	'5 years 4 months 28 days	'5 years 2 months 1 day	'5 years 5 months 9 days	'
Options exercisable, Weighted Average Remaining Contractual Life (years)	'4 years 11 months 12 days	'4 years 8 months 9 days	'4 years 7 months 10 days	'
Options outstanding, Aggregate Intrinsic Value	$9.90	$3.50	$1.30	'
Options vested and expected to vest using estimated forfeiture rates, Aggregate Intrinsic Value	9.6	3.4	1.3	'
Options exercisable, Aggregate Intrinsic Value	$7.50	$2.50	$0.80	'

Stockbased_Compensation_Additi1

Stock-based Compensation - Additional Information Regarding Options Outstanding (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Exercise Prices Range One [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	25,630
Weighted Average Remaining Contractual Life (Years)	'5 years 2 months 12 days
Weighted Average Exercise Price	$2.84
Number Exercisable	25,630
Weighted Average Exercise Price	$2.84
Range of Exercise Prices, Range 1	$2.70
Range of Exercise Prices, Range 2	$3.81
Exercise Prices Range Two [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	600,000
Weighted Average Remaining Contractual Life (Years)	'5 years 10 months 13 days
Weighted Average Exercise Price	$3.85
Number Exercisable	600,000
Weighted Average Exercise Price	$3.85
Range of Exercise Prices, Range 1	$3.85
Range of Exercise Prices, Range 2	$3.85
Exercise Prices Range Three [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	417,541
Weighted Average Remaining Contractual Life (Years)	'4 years 11 months 19 days
Weighted Average Exercise Price	$5.49
Number Exercisable	335,700
Weighted Average Exercise Price	$5.49
Range of Exercise Prices, Range 1	$4.17
Range of Exercise Prices, Range 2	$6.11
Exercise Prices Range Four [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	378,000
Weighted Average Remaining Contractual Life (Years)	'5 years 6 months 18 days
Weighted Average Exercise Price	$6.20
Number Exercisable	145,265
Weighted Average Exercise Price	$6.18
Range of Exercise Prices, Range 1	$6.12
Range of Exercise Prices, Range 2	$6.39
Exercise Prices Range Five [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	437,184
Weighted Average Remaining Contractual Life (Years)	'4 years 9 months 7 days
Weighted Average Exercise Price	$7.48
Number Exercisable	361,832
Weighted Average Exercise Price	$7.58
Range of Exercise Prices, Range 1	$6.41
Range of Exercise Prices, Range 2	$8.61
Exercise Prices Range Six [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	153,712
Weighted Average Remaining Contractual Life (Years)	'3 years 11 months 1 day
Weighted Average Exercise Price	$9.13
Number Exercisable	122,119
Weighted Average Exercise Price	$9.11
Range of Exercise Prices, Range 1	$8.71
Range of Exercise Prices, Range 2	$9.20
Exercise Prices Range Seven [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	850,000
Weighted Average Remaining Contractual Life (Years)	'6 years 2 months 5 days
Weighted Average Exercise Price	$9.53
Number Exercisable	0
Weighted Average Exercise Price	$0
Range of Exercise Prices, Range 1	$9.53
Range of Exercise Prices, Range 2	$9.53
Exercise Prices Range Eight [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	250,100
Weighted Average Remaining Contractual Life (Years)	'5 years 8 months 19 days
Weighted Average Exercise Price	$13.79
Number Exercisable	69,000
Weighted Average Exercise Price	$14.02
Range of Exercise Prices, Range 1	$10.24
Range of Exercise Prices, Range 2	$14.80
Exercise Prices Range Nine [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	15,000
Weighted Average Remaining Contractual Life (Years)	'3 years 7 months 13 days
Weighted Average Exercise Price	$15.12
Number Exercisable	15,000
Weighted Average Exercise Price	$15.12
Range of Exercise Prices, Range 1	$15.12
Range of Exercise Prices, Range 2	$15.12
Exercise Prices Range Ten [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	100,000
Weighted Average Remaining Contractual Life (Years)	'3 years 8 months 27 days
Weighted Average Exercise Price	$16.57
Number Exercisable	100,000
Weighted Average Exercise Price	$16.57
Range of Exercise Prices, Range 1	$16.57
Range of Exercise Prices, Range 2	$16.57
Exercise Prices Range Eleven [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number Outstanding	3,227,167
Weighted Average Remaining Contractual Life (Years)	'5 years 5 months 16 days
Weighted Average Exercise Price	$7.78
Number Exercisable	1,774,546
Weighted Average Exercise Price	$6.67
Range of Exercise Prices, Range 1	$2.70
Range of Exercise Prices, Range 2	$16.57

Stockbased_Compensation_Schedu4

Stock-based Compensation - Schedule of Restricted Stock Units Activity (Detail) (Restricted Stock Units [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Beginning outstanding balance	708,651	407,765	417,923
Awarded	294,150	555,911	243,908
Released	-303,882	-203,519	-159,384
Forfeited	-30,863	-51,506	-94,682
Ending outstanding balance	668,056	708,651	407,765
Weighted Average Grant Date Fair value, Awarded	$7.12	$6.64	$6.61
Released, Fair Value of Released RSU's	$2,806	$1,128	$1,163

Stockbased_Compensation_Schedu5

Stock-based Compensation - Schedule of Information Regarding Restricted Stock Unit Outstanding (Detail) (Restricted Stock Units [Member], USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restricted Stock Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
RSUs outstanding, Number of Shares	668,056	708,651	407,765	417,923
RSUs vested and expected to vest using estimated forfeiture rates, Number of Shares	583,711	588,170	336,454	'
RSUs outstanding, Weighted Average Remaining Contractual Life (years)	'10 months 28 days	'1 year 1 month 2 days	'11 months 12 days	'
RSUs vested and expected to vest using estimated forfeiture rates, Weighted Average Remaining Contractual Life (years)	'10 months 21 days	'1 year 18 days	'11 months 1 day	'
RSUs outstanding, Aggregate Intrinsic Value	$6.90	$4.90	$2.10	'
RSUs vested and expected to vest using estimated forfeiture rates, Aggregate Intrinsic Value	6.1	4	1.7	'
RSUs outstanding, Fair Value	$6.90	$4.90	$2.10	'

Stockbased_Compensation_Schedu6

Stock-based Compensation - Schedule of Restricted Stock Awards Activity (Detail) (Restricted Stock Awards [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Beginning outstanding balance	44,000	18,000	18,000
Awarded	44,000	57,750	30,000
Released	-44,000	-31,750	-21,000
Forfeited	0	0	-9,000
Ending outstanding balance	44,000	44,000	18,000
Weighted Average Grant Date Fair Value, Beginning Balance	$5.34	$6.61	$5.59
Weighted Average Grant Date Fair value, Awarded	$14.09	$5.70	$6.61
Weighted Average Grant Date Fair Value, Released	$5.34	$6.72	$5.74
Weighted Average Grant Date Fair Value, Forfeited	'	'	$6.61
Weighted Average Grant Date Fair Value, Ending Balance	$14.09	$5.34	$6.61
Total Fair Value of Awards Released	$676	$171	$159

Stockbased_Compensation_Schedu7

Stock-based Compensation - Schedule of Stock Option and Employee Stock Purchase Plan, Valuation Assumptions (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected life (in years)	'4 years 10 months 24 days	'4 years 6 months	'4 years 6 months
Interest rate	0.80%	0.70%	0.80%
Volatility	70.00%	70.00%	72.00%
Dividend yield	0.00%	0.00%	0.00%
Employee Stock Purchase Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected life (in years)	'6 months	'6 months	'6 months
Interest rate	0.10%	0.10%	0.20%
Volatility	67.00%	62.00%	45.00%
Dividend yield	0.00%	0.00%	0.00%

Stockbased_Compensation_Schedu8

Stock-based Compensation - Schedule of Stock-Based Compensation (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'		'
Total	$4,644	$3,146	[1]	$3,555	[1]
Sales and Marketing [Member]	'	'		'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'		'
Total	747	547		526
Research and Development [Member]	'	'		'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'		'
Total	1,040	756		825
General and Administrative [Member]	'	'		'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'		'
Total	$2,857	$1,843		$2,204
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Stockholders_Equity_Changes_in

Stockholders' Equity - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	$109	[1]
Other comprehensive income (loss) before reclassifications	3
Amounts reclassified from accumulated other comprehensive income (loss)	0
Net current period other comprehensive income (loss)	3
Ending Balance	112
Unrealized Gains and Losses on Available-for Sale Securities [Member]	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	8
Other comprehensive income (loss) before reclassifications	3
Amounts reclassified from accumulated other comprehensive income (loss)	0
Net current period other comprehensive income (loss)	3
Ending Balance	11
Foreign Currency Items [Member]	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	101
Other comprehensive income (loss) before reclassifications	0
Amounts reclassified from accumulated other comprehensive income (loss)	0
Net current period other comprehensive income (loss)	0
Ending Balance	$101
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]	'	'	'
Stock repurchase program, authorized amount	$50,000,000	'	'
Repurchased shares	0	1,054,538	1,139,997
Repurchased shares, value	'	5,721,000	6,450,000
Stock repurchase program, average cost	'	$5.43	$5.66
Stock repurchase program, remaining repurchase Amount	$19,400,000	'	'

Discontinued_Operations_Additi

Discontinued Operations - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2009
Discontinued Operations And Disposal Groups [Abstract]	'	'	'	'		'		'
Gain from discontinued operations, net of tax	$0	$0	$0	$153,000	[1]	$61,000	[1]	$187,000
Negotiated consideration for 3D product line sales	'	'	'	'		'		2,700,000
Negotiated consideration for the sales of discontinued operation in the form of cash	'	'	'	'		'		320,000
Negotiated consideration for the sales of discontinued operation in the form of notes receivable	'	'	'	'		'		2,400,000
Carrying value of intangible assets sold	'	'	'	'		'		$0
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Income_Taxes_Schedule_of_Incom

Income Taxes - Schedule of Income Tax Benefit (Provisions) from Continuing Operations (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'	'		'
Income (loss) from continuing operations before benefit (provision) for income taxes	'	'	$3,672	($6,558)	[1]	($1,675)	[1]
Benefit (provision) for income taxes	$36,767	($55)	$36,483	($792)	[1]	($1,816)	[1]
Effective tax rate	'	'	-993.50%	-12.10%		-108.40%
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Income_Taxes_Details_of_PreTax

Income Taxes - Details of Pre-Tax Book Income (Loss) from Continuing Operations (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'		'
Domestic	$3,349	($2,175)		($2,034)
Foreign	323	-4,383		359
Income (loss) from continuing operations before provision for income taxes	$3,672	($6,558)	[1]	($1,675)	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Income_Taxes_Summary_of_Benefi

Income Taxes - Summary of Benefit (Provision) for Income Taxes from Continuing Operations (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Current:	'	'	'	'		'
United States federal	'	'	($300)	$91		$115
Foreign	'	'	-12	-902		-1,923
State and local	'	'	-55	19		-8
Total current	'	'	-367	-792		-1,816
Deferred:	'	'	'	'		'
United States federal	'	'	36,190	0		0
Foreign	'	'	660	0		0
State and local	'	'	0	0		0
Total deferred	'	'	36,850	0		0
Total	$36,767	($55)	$36,483	($792)	[1]	($1,816)	[1]
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Income_Taxes_Details_of_Signif

Income Taxes - Details of Significant Components of Net Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred tax assets:	'	'
Net operating loss carryforwards	$23,652	$24,211
State income taxes	1	-7
Deferred revenue	3,588	4,978
Research and development and other credits	8,201	9,263
Reserves and accruals recognized in different periods	4,994	4,606
Basis difference in investment	967	1,032
Capitalized R&D expenses	1,535	1,566
Depreciation and amortization	887	1,008
Other	120	159
Total deferred tax assets	43,945	46,816
Valuation allowance	-7,095	-46,816
Net deferred tax assets	$36,850	$0

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]	'	'	'
Tax benefit resulted from release of valuation allowance against U.S. Federal and foreign deferred tax assets	$36,850,000	$0	$0
Valuation allowance of deferred tax assets	7,095,000	46,816,000	'
Net operating loss associated with excess benefits related to stock compensation	7,000,000	'	'
Federal statutory tax rate	35.00%	35.00%	35.00%
Provision for federal and state income taxes on undistributed earnings of foreign subsidiaries	0	'	'
Accrued interest or penalties related to uncertain tax positions	64,000	'	'
Total amount of unrecognized tax benefits	264,000	'	'
CA [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Research and development credit carryforwards	1,200,000	'	'
Tax credit carryforward expiration year	'2033	'	'
Domestic Tax Authority [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Net operating loss carryforwards	65,300,000	'	'
Net operating losses expiration beginning period	'2020	'	'
Federal net operating losses expiration ending Period	'2033	'	'
Tax credit carryforwards	8,700,000	'	'
Federal credit carryforward expiration, beginning period	'2015	'	'
Federal credit carryforward expiration ending Period	'2033	'	'
State and Local Jurisdiction [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Net operating loss carryforwards	52,400,000	'	'
Net operating losses expiration beginning period	'2028	'	'
Tax credit carryforwards	770,000	'	'
U.S. Federal [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Valuation allowance of deferred tax assets	1,100,000	'	'
State and Foreign [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Valuation allowance of deferred tax assets	$6,000,000	'	'

Income_Taxes_Reconciliation_be

Income Taxes - Reconciliation between Benefit (Provision) for Income Taxes at Statutory Rate and Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal statutory tax rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	0.10%	2.30%	5.00%
Foreign withholding	8.20%	-13.00%	-112.60%
Stock compensation expense	2.50%	-2.60%	-9.30%
Meals & entertainment	0.30%	-0.20%	-0.90%
Foreign rate differential	-1.70%	-2.80%	-5.30%
Prior year true-up items	0.10%	0.10%	-3.70%
Tax reserves	1.30%	-0.10%	-0.60%
Benefit of discontinued operations	0.00%	1.50%	2.30%
Other	0.00%	0.30%	4.90%
Valuation allowance	-1039.30%	-32.60%	-23.20%
Effective tax rate	-993.50%	-12.10%	-108.40%

Income_Taxes_Details_of_Beginn

Income Taxes - Details of Beginning and Ending Amount of Gross Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Balance at beginning of year	$628	$628	$628
Gross increases for tax positions of prior years	896	0	0
Gross decreases for tax positions of prior years	0	0	0
Gross increases for tax positions of current year	110	0	0
Settlements	0	0	0
Lapse of statute of limitations	0	0	0
Balance at end of year	$1,634	$628	$628

Net_Income_Loss_Per_Share_Reco

Net Income (Loss) Per Share - Reconciliation used in Computing Basic and Diluted Net Income (Loss) per Share (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2009
Numerator:	'	'	'	'		'		'
Income (loss) from continuing operations	$37,403	($402)	$40,155	($7,350)	[1]	($3,491)	[1]	'
Gain from discontinued operations, net of tax	0	0	0	153	[1]	61	[1]	187
Net income (loss) used in computing basic and diluted net income (loss) per share	$37,403	($402)	$40,155	($7,197)	[1]	($3,430)	[1]	'
Denominator:	'	'	'	'		'		'
Shares used in computation of basic and diluted net income (loss) per share (weighted average common shares outstanding)	28,614	27,288	28,190	27,735	[1]	28,564	[1]	'
Dilutive potential common shares:	'	'	'	'		'		'
Shares used in computation of diluted net income (loss) per share	29,675	27,288	29,338	27,735	[1]	28,564	[1]	'
Basic net income (loss) per share from:	'	'	'	'		'		'
Continuing operations	$1.31	($0.01)	$1.42	($0.27)	[1]	($0.12)	[1]	'
Discontinued operations	$0	$0	$0	$0.01	[1]	$0	[1]	'
Total	$1.31	($0.01)	$1.42	($0.26)	[1]	($0.12)	[1]	'
Diluted net income (loss) per share from:	'	'	'	'		'		'
Continuing operations	$1.26	($0.01)	$1.37	($0.27)	[1]	($0.12)	[1]	'
Discontinued operations	$0	$0	$0	$0.01	[1]	$0	[1]	'
Total	$1.26	($0.01)	$1.37	($0.26)	[1]	($0.12)	[1]	'
Restricted Stock and RSUs [Member]	'	'	'	'		'		'
Dilutive potential common shares:	'	'	'	'		'		'
Dilutive potential common stocks	'	'	343	0		0		'
Stock Options [Member]	'	'	'	'		'		'
Dilutive potential common shares:	'	'	'	'		'		'
Dilutive potential common stocks	'	'	805	0		0		'
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Net_Income_Loss_Per_Share_Addi

Net Income (Loss) Per Share - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Options to purchase shares of common stock	979,521
Exercise price greater than the average fair market value of stock	$11.72

Net_Income_Loss_Per_Share_Sche

Net Income (Loss) Per Share - Schedule of Outstanding Securities (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Outstanding Stock Options [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Outstanding securities having potential to dilute basic EPS	3,155,631	3,267,838
Unvested Restricted Stock Awards [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Outstanding securities having potential to dilute basic EPS	44,000	18,000
Unvested Restricted Stock Units [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Outstanding securities having potential to dilute basic EPS	708,651	407,765

Employee_Benefit_Plan_Addition

Employee Benefit Plan - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]	'
Company matched employee's contribution	25.00%
Employee's contribution	$2,000

Employee_Benefit_Plan_Details_

Employee Benefit Plan - Details of Company Contribution to Plan (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Contribution Pension And Other Postretirement Plans Disclosure [Abstract]	'	'	'
Company contribution to 401 (k) plan	$91	$77	$85

Contingencies_Additional_Infor

Contingencies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013
	Additional_Class_Action
Commitments And Contingencies Disclosure [Abstract]	'
Number of additional class action complaints filed	4
Number of additional class action complaints voluntarily dismissed	1

Segment_Reporting_Geographic_I2

Segment Reporting, Geographic Information, and Significant Customers - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Number of reporting segment	1	'	'
Net Revenues [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by major customer	47.00%	24.00%	32.00%
Maximum [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Long-lived assets outside United States of America	10.00%	10.00%	10.00%
Maximum [Member] | Net Revenues [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by major customer	10.00%	'	'
Maximum [Member] | Outstanding Accounts and Other Receivable [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Outstanding accounts and other receivable, percentage	10.00%	'	'
Minimum [Member] | Net Revenues [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by major customer	10.00%	'	'
Minimum [Member] | Outstanding Accounts and Other Receivable [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Outstanding accounts and other receivable, percentage	10.00%	'	'

Segment_Reporting_Geographic_I3

Segment Reporting, Geographic Information, and Significant Customers - Summary of Revenues by Geographic Areas (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenues by geographic area, in percentage	100.00%	100.00%	100.00%
Reportable Geographical Components [Member] | North America [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenues by geographic area, in percentage	28.00%	41.00%	42.00%
Reportable Geographical Components [Member] | Europe [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenues by geographic area, in percentage	4.00%	13.00%	13.00%
Reportable Geographical Components [Member] | Far East [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenues by geographic area, in percentage	68.00%	46.00%	45.00%
Reportable Geographical Components [Member] | Rest of the World [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenues by geographic area, in percentage	0.00%	0.00%	0.00%

Segment_Reporting_Geographic_I4

Segment Reporting, Geographic Information, and Significant Customers - Summary of Geographic Revenue as Percentage of Total Revenues by Country (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by countries, in percentage	100.00%	100.00%	100.00%
Reportable Geographical Components [Member] | United States of America [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by countries, in percentage	26.00%	38.00%	40.00%
Reportable Geographical Components [Member] | Korea [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by countries, in percentage	58.00%	36.00%	37.00%
Reportable Geographical Components [Member] | Japan [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by countries, in percentage	7.00%	'	'
Reportable Geographical Components [Member] | Other Countries (None of Which is More Than 10% of Revenues) [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by countries, in percentage	9.00%	26.00%	23.00%

Segment_Reporting_Geographic_I5

Segment Reporting, Geographic Information, and Significant Customers - Summary of Geographic Revenue as Percentage of Total Revenues by Country (Parenthetical) (Detail) (Net Revenues [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by major customer	47.00%	24.00%	32.00%
Maximum [Member]	'	'	'
Segment Reporting, Geographic Information, and Significant Customers [Line Items]	'	'	'
Revenue by major customer	10.00%	'	'

Segment_Reporting_Geographic_I6

Segment Reporting, Geographic Information, and Significant Customers - Summary of Customers Comprising More Than 10% in Net Revenue (Detail) (Net Revenues [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Total	47.00%	24.00%	32.00%
Samsung Electronics [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Total	47.00%	24.00%	20.00%
Customer B [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Total	'	'	12.00%
Customer C [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Total	'	'	'
Customer D [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Total	'	'	'
Customer E [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Total	'	'	'
Customer F [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Total	'	'	'

Segment_Reporting_Geographic_I7

Segment Reporting, Geographic Information, and Significant Customers - Summary of Customers Comprising More Than 10% in Net Revenue (Parenthetical) (Detail) (Net Revenues [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Revenue by major customer	47.00%	24.00%	32.00%
Maximum [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Revenue by major customer	10.00%	'	'

Segment_Reporting_Geographic_I8

Segment Reporting, Geographic Information, and Significant Customers - Summary of Customers Comprising 10% or Greater of Outstanding Accounts and Other Receivable (Detail) (Outstanding Accounts and Other Receivable [Member])	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Samsung Electronics [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Outstanding accounts and other receivable, in percentage	'	'	'
Customer B [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Outstanding accounts and other receivable, in percentage	'	33.00%	'
Customer C [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Outstanding accounts and other receivable, in percentage	'	38.00%	14.00%
Customer D [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Outstanding accounts and other receivable, in percentage	11.00%	'	14.00%
Customer E [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Outstanding accounts and other receivable, in percentage	'	10.00%	'
Customer F [Member]	'	'	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'	'	'
Outstanding accounts and other receivable, in percentage	28.00%	'	'

Segment_Reporting_Geographic_I9

Segment Reporting, Geographic Information, and Significant Customers - Summary of Customers Comprising 10% or Greater of Outstanding Accounts and Other Receivable (Parenthetical) (Detail) (Maximum [Member], Outstanding Accounts and Other Receivable [Member])	Dec. 31, 2013
Maximum [Member] | Outstanding Accounts and Other Receivable [Member]	'
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]	'
Outstanding accounts and other receivable, percentage	10.00%

Quarterly_Results_of_Operation2

Quarterly Results of Operations - Quarterly Consolidated Statement of Operations Data (Detail) (USD $)	3 Months Ended		12 Months Ended						3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2009	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
									As Adjusted [Member]	As Adjusted [Member]	As Adjusted [Member]	As Adjusted [Member]	As Adjusted [Member]	As Adjusted [Member]
Effect of Fourth Quarter Events [Line Items]	'	'	'	'		'		'	'	'	'	'	'	'
Revenues	$12,067	$8,860	$47,470	$32,169	[1]	$30,635	[1]	'	$11,342	$10,201	$13,860	$7,142	$6,476	$9,691
Gross profit	11,991	8,474	'	'		'		'	11,231	10,074	13,712	6,869	6,262	9,376
Operating income (loss)	648	-373	3,604	-6,728	[1]	-1,879	[1]	'	814	448	1,694	-3,456	-2,762	-137
Income (loss) from continuing operations before provision for taxes	636	-347	'	'		'		'	856	476	1,704	-3,390	-2,694	-127
Benefit (provision) for income taxes	36,767	-55	36,483	-792	[1]	-1,816	[1]	'	-257	-10	-17	-118	-66	-553
Income (loss) from continuing operations	37,403	-402	40,155	-7,350	[1]	-3,491	[1]	'	599	466	1,687	-3,508	-2,760	-680
Net income from discontinued operations (net of tax)	0	0	0	153	[1]	61	[1]	187	0	0	0	0	153	0
Net income (loss)	$37,403	($402)	$40,155	($7,197)	[1]	($3,430)	[1]	'	$599	$466	$1,687	($3,508)	($2,607)	($680)
Basic net income (loss) per share	'	'	'	'		'		'	'	'	'	'	'	'
Continuing operations	$1.31	($0.01)	$1.42	($0.27)	[1]	($0.12)	[1]	'	$0.02	$0.02	$0.06	($0.13)	($0.10)	($0.02)
Discontinued operations	$0	$0	$0	$0.01	[1]	$0	[1]	'	$0	$0	$0	$0	$0.01	$0
Total	$1.31	($0.01)	$1.42	($0.26)	[1]	($0.12)	[1]	'	$0.02	$0.02	$0.06	($0.13)	($0.09)	($0.02)
Shares used in calculating basic net income (loss) per share	28,614	27,288	28,190	27,735	[1]	28,564	[1]	'	28,558	28,146	27,424	27,658	28,058	27,941
Diluted net income (loss) per share	'	'	'	'		'		'	'	'	'	'	'	'
Continuing operations	$1.26	($0.01)	$1.37	($0.27)	[1]	($0.12)	[1]	'	$0.02	$0.02	$0.06	($0.13)	($0.10)	($0.02)
Discontinued operations	$0	$0	$0	$0.01	[1]	$0	[1]	'	$0	$0	$0	$0	$0.01	$0
Total	$1.26	($0.01)	$1.37	($0.26)	[1]	($0.12)	[1]	'	$0.02	$0.02	$0.06	($0.13)	($0.09)	($0.02)
Shares used in calculating diluted net income (loss) per share	29,675	27,288	29,338	27,735	[1]	28,564	[1]	'	29,653	29,293	28,294	27,658	28,058	27,941
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Quarterly_Results_of_Operation3

Quarterly Results of Operations - Impact of Change in Accounting Method (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Quarterly Impact Of Changes In Accounting Method [Line Items]	'	'	'	'	'	'	'	'	'	'		'
Income (loss) from continuing operations	$37,403	'	'	'	($402)	'	'	'	$40,155	($7,350)	[1]	($3,491)	[1]
Benefit (provision) for income taxes	36,767	'	'	'	-55	'	'	'	36,483	-792	[1]	-1,816	[1]
Net income (loss)	37,403	'	'	'	-402	'	'	'	40,155	-7,197	[1]	-3,430	[1]
Basic net income (loss) per share	$1.31	'	'	'	($0.01)	'	'	'	$1.42	($0.27)	[1]	($0.12)	[1]
Diluted net income (loss) per share	$1.26	'	'	'	($0.01)	'	'	'	$1.37	($0.27)	[1]	($0.12)	[1]
Quarterly Impact of Changes in accounting Method [Member]	'	'	'	'	'	'	'	'	'	'		'
Quarterly Impact Of Changes In Accounting Method [Line Items]	'	'	'	'	'	'	'	'	'	'		'
Income (loss) from continuing operations	-752	-607	-310	-566	-202	-518	-452	-461	3,897	-1,633		-1,826
Benefit (provision) for income taxes	6,132	0	0	0	0	0	0	0	6,132	'		'
Net income (loss)	$5,380	($607)	($310)	($566)	($202)	($518)	($452)	($461)	$3,897	($1,633)		($1,826)
Basic net income (loss) per share	$0.19	($0.02)	($0.01)	($0.02)	($0.01)	($0.02)	($0.02)	($0.02)	$0.13	'		'
Diluted net income (loss) per share	$0.18	($0.02)	($0.01)	($0.02)	($0.01)	($0.02)	($0.02)	($0.02)	$0.13	'		'
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Quarterly_Results_of_Operation4

Quarterly Results of Operations - Impact of Change in Accounting Method (Parenthetical) (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Quarterly Impact Of Changes In Accounting Method [Line Items]	'	'	'	'		'
Benefit (provision) for income taxes	$36,767	($55)	$36,483	($792)	[1]	($1,816)	[1]
Previous Accounting Guidance [Member]	'	'	'	'		'
Quarterly Impact Of Changes In Accounting Method [Line Items]	'	'	'	'		'
Benefit (provision) for income taxes	30,635	'	'	'		'
Adoption of New Accounting Method [Member]	'	'	'	'		'
Quarterly Impact Of Changes In Accounting Method [Line Items]	'	'	'	'		'
Benefit (provision) for income taxes	$36,767	'	'	'		'
[1]	See Note 1 "Significant Accounting Policies - Intangible Assets" of Notes to Consolidated Financial Statements.

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts (Detail) (Allowance for Doubtful Accounts [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts [Member]	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Beginning of Period	$134	$21	$97
Costs and Expenses	8	113	-71
Deductions/Write-offs	133	0	5
End of Period	$9	$134	$21