RPX (RPXC) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Trading Symbol	RPXC
Entity Registrant Name	RPX Corporation
Entity Central Index Key	1509432
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		54,273,296

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$118,858	$78,019
Short-term investments	256,080	239,514
Restricted cash	785	584
Accounts receivable	15,351	24,793
Prepaid expenses and other current assets	8,353	3,466
Deferred tax assets	4,647	4,400
Total current assets	404,074	350,776
Patent assets, net	256,898	236,349
Property and equipment, net	4,230	4,151
Intangible assets, net	3,095	3,526
Goodwill	19,978	19,978
Restricted cash, less current portion	1,091	1,091
Deferred Tax Assets, Net, Noncurrent	473	93
Other assets	1,128	26,100
Total assets	690,967	642,064
Current liabilities:
Accounts payable	1,583	235
Accrued liabilities	7,190	14,257
Deferred revenue	152,602	133,316
Deferred payment obligations	10,290	0
Other current liabilities	857	640
Total current liabilities	172,522	148,448
Deferred revenue, less current portion	5,809	2,893
Other liabilities	5,770	5,678
Total liabilities	184,101	157,019
Commitments and contingencies (Note 9)
Stockholders’ equity:
Common stock	5	5
Additional paid-in capital	330,274	326,280
Retained earnings	176,611	158,868
Accumulated other comprehensive loss	-24	-108
Total stockholders’ equity	506,866	485,045
Total liabilities and stockholders’ equity	$690,967	$642,064

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$83,287	$61,888
Cost of revenue	34,759	28,920
Selling, general and administrative expenses	19,459	17,255
Operating income	29,069	15,713
Other income, net	121	99
Income before provision for income taxes	29,190	15,812
Provision for income taxes	11,159	5,952
Net income	18,031	9,860
Net income available to common stockholders	$18,031	$9,860
Net income per common share:
Basic (dollars per common share)	$0.33	$0.19
Diluted (dollars per common share)	$0.33	$0.18
Weighted-average shares used in computing net income per common share:
Basic (in shares)	54,175	52,803
Diluted (in shares)	55,197	54,443

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$18,031	$9,860
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during the period	84	-18
Net unrealized gains (losses) on available-for-sale securities, net of tax	84	-18
Comprehensive income	$18,115	$9,842

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities
Net income	$18,031	$9,860
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	34,011	28,418
Stock-based compensation	3,881	3,802
Excess tax benefit from stock-based compensation	-316	-694
Amortization of premium on investments	1,435	1,608
Deferred taxes	-738	-893
Other	0	-500
Changes in assets and liabilities:
Accounts receivable	9,442	25,406
Prepaid expenses and other assets	-5,323	463
Accounts payable	1,348	467
Accrued and other liabilities	-6,802	-2,601
Deferred revenue	22,102	2,791
Net cash provided by operating activities	77,071	68,127
Investing activities
Purchases of investments	-57,663	-51,125
Maturities of investments	44,559	59,945
Increase in restricted cash	-201	0
Purchases of property and equipment	-547	-426
Acquisitions of patent assets	-28,636	-56,153
Net cash used in investing activities	-42,488	-47,759
Proceeds from Deferred Payment Obligations	6,270	0
Financing activities
Proceeds from exercise of stock options and other common stock issuances	671	582
Taxes paid related to net-share settlements of restricted stock units	-857	-901
Excess tax benefit from stock-based compensation	316	694
Payments for Repurchase of Common Stock	-144	0
Net cash provided by financing activities	6,256	375
Net increase in cash and cash equivalents	40,839	20,743
Cash and cash equivalents at beginning of period	78,019
Cash and cash equivalents at end of period	118,858	120,898
Non-cash investing and financing activities
Change in patent assets purchased and accrued but not paid	0	-500
Change in fixed assets purchased and accrued but not paid	0	-166
Change in other assets purchased and accrued but not paid	0	-63
Unpaid cash consideration for business acquisition	425	0
Noncash or Part Noncash Acquisition, Debt Assumed	$5,935	$0

Nature_of_Business

Nature of Business	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature Of Business	Nature of Business
	RPX Corporation (also referred to herein as “RPX” or the “Company”) helps companies reduce patent-related risk and expense by providing a subscription-based patent risk management solution that facilitates more efficient exchanges of value between owners and users of patents compared to transactions driven by actual or threatened litigation. The core of the Company’s solution is defensive patent aggregation, in which it acquires patents or licenses to patents that are being or may be asserted against the Company’s current or prospective clients. The Company may occasionally enter into agreements to acquire covenants not to sue in order to further mitigate its clients’ litigation risk. The acquired patents, licenses to patents, patent rights and agreements for covenants not to sue are collectively referred to as “patent assets.” The Company’s clients pay an annual subscription fee and in return, receive a license from the Company to substantially all of its patent assets and access to its proprietary patent market intelligence and data. In addition to the Company’s core solution, in August 2012, the Company began underwriting patent infringement liability insurance policies to insure against certain costs of litigation from non-practicing entities (“NPEs”). In March 2014, the Company formed a reinsurance company to assume some portion of the underwriting risk on insurance policies that the Company issues on behalf of a Lloyd’s of London underwriting syndicate. The Company began placing new policies under the reinsurance model in May 2014. As of, and for the three months ended March 31, 2015, the effect of the insurance policies that the Company has issued or assumed through our reinsurance business was not material to the Company’s results of operations, financial condition or cash flows.

Basis_of_Presentation_and_Sign

Basis of Presentation and Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis Of Presentation And Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies
	Basis of Presentation
	The accompanying condensed consolidated balance sheet as of March 31, 2015, the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive income and the condensed consolidated statements of cash flows for the three months ended March 31, 2015 and 2014, are unaudited. The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements which are included in the Company’s Form 10-K for the fiscal year ended December 31, 2014, which was filed with the U.S. Securities and Exchange Commission (“SEC”) on March 2, 2015. The unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.
	The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America and with the instructions for Form 10-Q and Regulation S-X for interim financial statements. Accordingly, they do not include all of the information and notes required for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring items, necessary to state fairly the results of the interim periods have been included in the accompanying financial statements. Operating results for the three months ended March 31, 2015 are not necessarily indicative of the results that may be expected for any subsequent interim period or for the year ending December 31, 2015.
	Recently Adopted Accounting Standards
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which will supersede most existing revenue recognition guidance in U.S. generally accepted accounting principles (“U.S. GAAP”) once it becomes effective. ASU 2014-09 requires an entity to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process than required under existing U.S. GAAP including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 will be effective for annual and interim periods beginning after December 15, 2016 and early adoption is not permitted. The Company is currently evaluating the impact of the adoption of ASU 2014-12 on its consolidated financial statements.
	Significant Accounting Policies
	There have been no material changes to the Company’s significant accounting policies during the three months ended March 31, 2015, as compared to the significant accounting policies presented under the heading “Basis of Presentation and Significant Accounting Policies” in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K filed with the SEC on March 2, 2015.

Net_Income_Per_Share

Net Income Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net Income Available to Common Stockholders	Net Income Per Share
	Basic and diluted net income per share are computed by dividing the net income by the weighted-average number of shares of common stock outstanding during the period. Diluted net income per share is computed by using the weighted-average number of shares of common stock outstanding, including potential dilutive shares of common stock, assuming the dilutive effect of outstanding stock options and restricted stock units using the treasury stock method.
	The following table presents the calculation of basic and diluted net income per share (in thousands, except per share data):
		Three Months Ended March 31,
		2015			2014
	Numerator:
	Net income	$	18,031		$	9,860
	Denominator:
	Basic shares:
	Weighted-average shares used in computing basic net income per common share	54,175			52,803
	Diluted shares:
	Weighted-average shares used in computing basic net income per common share	54,175			52,803
	Dilutive effect of stock options and restricted stock units using the treasury-stock method	1,022			1,640
	Weighted-average shares used in computing diluted net income per common share	55,197			54,443
	Net income per common share:
	Basic	$	0.33		$	0.19
	Diluted	$	0.33		$	0.18
	The following securities were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive (in thousands):
		Three Months Ended March 31,
		2015		2014
	Weighted-average:
	Stock options outstanding	922		798
	Restricted stock units outstanding	714		60

Financial_Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	The following tables present the Company's financial assets and liabilities measured at fair value on a recurring basis (in thousands):
		31-Mar-15
		Amortized Cost		Unrealized					Estimated Fair Value		Level 1		Level 2		Level 3
				Gains		Losses
	Assets:
	Cash equivalents:
	Commercial paper	$	16,599	$	—	$	—		$	16,599	$	—	$	16,599	$	—
	Municipal bonds	29,384		—		—			29,384		29,384		—		—
	Money market funds	2,573		—		—			2,573		—		2,573		—
		$	48,556	$	—	$	—		$	48,556	$	29,384	$	19,172	$	—
	Short-term investments:
	Municipal bonds	$	110,325	$	10	$	(21	)	$	110,314	$	—	$	110,314	$	—
	Commercial paper	8,790		—		—			8,790		—		8,790		—
	Corporate bonds	70,297		10		(31		)	70,276		—		70,276		—
	U.S. government and agency securities	56,403		16		(9		)	56,410		—		56,410		—
	Equity securities	6,620		—		—			6,620		685		5,935		—
		$	252,435	$	36	$	(61	)	$	252,410	$	685	$	251,725	$	—
	Liabilities:
	Current liabilities:
	Deferred payment obligation	$	4,355	$	—	$	—		$	4,355	$	—	$	—	$	4,355
		$	4,355	$	—	$	—		$	4,355	$	—	$	—	$	4,355
		31-Dec-14
		Amortized Cost		Unrealized					Estimated Fair Value		Level 1		Level 2		Level 3
				Gains		Losses
	Assets:
	Cash equivalents:
	Commercial paper	$	5,749	$	—	$	—		$	5,749	$	—	$	5,749	$	—
	U.S. government and agency securities	2,000		—		—			2,000		—		2,000		—
	Municipal bonds	1,409		—		—			1,409		—		1,409		—
	Money market funds	451		—		—			451		451		—		—
		$	9,609	$	—	$	—		$	9,609	$	451	$	9,158	$	—
	Short-term investments:
	Municipal bonds	$	120,270	$	24	$	(12	)	$	120,282	$	—	$	120,282	$	—
	Commercial paper	$	2,498	—		—			2,498		—		2,498		—
	Corporate bonds	$	68,758	1		(87		)	68,672		—		68,672		—
	U.S. government and agency securities	$	48,095	—		(33		)	48,062		—		48,062		—
		$	239,621	$	25	$	(132	)	$	239,514	$	—	$	239,514	$	—
	The Company's short-term investments in Level 2 equity securities are classified as held-to-maturity with the remainder of the Company's short-term investments classified as available-for-sale. Available-for-sale and held-to-maturity securities are reported at fair value, with unrealized gains and losses, net of tax, included as a separate component of stockholders’ equity within accumulated other comprehensive income (loss). Realized gains and losses on these securities are included in other income, net in the Company’s condensed consolidated statements of operations and have not been material for all periods presented.
	The weighted-average remaining maturity of the Company’s financial assets and liabilities was less than one year as of March 31, 2015 and December 31, 2014. As of March 31, 2015, no individual securities incurred continuous unrealized losses for greater than 12 months.
	In connection with the Rockstar Transaction (see Note 9, "Commitments and Contingencies"), the Company received funding of $6.3 million from a syndicate participant. At March 31, 2015, the fair value of the loan from the syndicate participant was $4.4 million and was categorized as Level 3.
	Level 3 Valuation Techniques
	Level 3 financial liabilities consist of repayment obligations to a third party for which determination of fair value requires significant judgment and estimation. Changes in fair value measurement categorized within Level 3 of the fair value hierarchy are analyzed each period for changes in estimates or assumptions and recorded as appropriate.
	The Company uses the Black-Scholes option valuation model to value certain Level 3 financial liabilities at inception and subsequent valuation dates. This model incorporates assumptions about details such as the value of underlying securities, expected terms, maturity, risk-free interest rates, as well as volatility. A significant change in volatility and expected term could result in a significant change in fair value. The risk-free interest rate was based on the implied yield currently available on U.S. Treasury zero coupon issues with an equivalent remaining term at the measurement date. The expected volatility was calculated using the standard deviation of the underlying security's daily returns over the estimated period of time to take to settle the liability. The expected term of the liability is determined by the estimated settlement date of the liability. Changes in the values are recorded in the Company's statement of operations. As of March 31, 2015, there were no transfers in or out of Level 3 from other levels of the fair value hierarchy.

Patent_Assets_Net

Patent Assets, Net	3 Months Ended
	Mar. 31, 2015
Patent Assets, Net [Abstract]
Patent Assets, Net	Patent Assets, Net
	Patent assets, net, consisted of the following (in thousands):
		December 31,			Additions			Dispositions			March 31,
		2014									2015
	Patent assets	$	665,290		$	53,636		$	(61	)	$	718,865
	Accumulated amortization	(428,941		)	(33,059		)	33			(461,967		)
	Patent assets, net	$	236,349								$	256,898
	The Company’s acquired patent assets relate to technologies used or supplied by companies in a variety of market sectors, including consumer electronics, e-commerce, financial services, media distribution, mobile communications, networking, semiconductors and software. The Company amortizes each acquired portfolio of patent assets on a straight-line basis over its estimated economic useful life. As of March 31, 2015, the estimated economic useful lives of the Company’s patent assets generally ranged from 24 to 60 months. As of March 31, 2015, the weighted-average estimated economic useful life at the time of acquisition of all patents acquired since the Company’s inception was 45 months.
	As of March 31, 2015, the Company expects amortization expense in future periods to be as follows (in thousands):
	2015 (remainder)	$	93,531
	2016	96,032
	2017	45,922
	2018	14,106
	2019	6,864
	Thereafter	443
	Total estimated future amortization expense	$	256,898
	Amortization expense was $33.1 million and $27.6 million for the three months ended March 31, 2015 and 2014, respectively.
	On December 22, 2014, the Company and RPX Clearinghouse LLC (a wholly-owned subsidiary of the Company) entered into an Asset Purchase Agreement by and among Rockstar Consortium US LP, Rockstar Consortium LLC, Bockstar Technologies LLC, Constellation Technologies LLC, MobileStar Technologies LLC, and NetStar Technologies LLC (the “Sellers”), for the purchase of substantially all of the patent assets owned or controlled by the Sellers (the “Rockstar Transaction”), as well as other ancillary agreements, including but not limited to an Escrow Agreement by and among the Sellers, Citibank, N.A., acting as escrow agent, RPX Clearinghouse LLC and the Company (the “Escrow Agreement”). Upon the closing of the Rockstar Transaction, syndicate participants received non-exclusive licenses to the patent assets included in the Rockstar Transaction, and RPX Clearinghouse made the patent assets available for license to all other interested companies under fair, reasonable, and non-discriminatory terms. RPX Clearinghouse LLC paid the Sellers $25.0 million as a non-refundable deposit on December 26, 2014 upon the execution of the Asset Purchase Agreement. The third-party funding commitments described below were derived pursuant with the Escrow Agreement and the remaining closing conditions under the Asset Purchase Agreement were met on January 28, 2015 on which date the Rockstar Transaction was consummated and the Sellers received an additional payment of $875.0 million from escrow.
	RPX Clearinghouse LLC received funding commitments for the Rockstar Transaction from a syndicate of more than 30 companies. The Company evaluated the contributions from syndicate members to determine whether they should be recorded on a gross or net basis. As a result, the Company accounted for these third-party funding commitments on a net basis as it acted as an agent to acquire patent rights from the Sellers on behalf of the syndicate who paid for such rights separately from a subscription agreement. The Company contributed approximately $29.0 million which was recorded as a patent asset upon closing of the Rockstar Transaction and is amortized over its estimated economic useful life of 60 months.

Property_and_Equipment_Net

Property and Equipment, Net	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment, Net, by Type [Abstract]
Property and Equipment, Net	Property and Equipment, Net
	Property and equipment, net, consisted of the following (in thousands):
		March 31,			December 31,
		2015			2014
	Internal-use software	$	5,929		$	5,358
	Leasehold improvements	1,799			1,799
	Computer, equipment and software	1,388			1,221
	Furniture and fixtures	818			818
	Construction-in-progress	—			167
	Total property and equipment, gross	9,934			9,363
	Less: Accumulated depreciation and amortization	(5,704		)	(5,212		)
	Total property and equipment, net	$	4,230		$	4,151
	Depreciation and amortization expense was $0.5 million for both three month periods ended March 31, 2015 and 2014.

Intangible_Assets_Net

Intangible Assets, Net	3 Months Ended
	Mar. 31, 2015
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible Assets, Net	Intangible Assets, Net
	Intangible assets, net, consisted of the following (in thousands):
		March 31, 2015							December 31, 2014
		Carrying Amount		Accumulated Amortization			Net Carrying Amount		Carrying Amount		Accumulated Amortization			Net Carrying Amount
	Proprietary data and models	$	2,100	$	(1,262	)	$	838	$	2,100	$	(1,119	)	$	981
	Trademarks	1,890		(1,628		)	262		1,890		(1,565		)	325
	Developed technology	433		(433		)	—		433		(433		)	—
	Customer relationships	1,050		(459		)	591		1,050		(392		)	658
	Covenant not to compete	1,920		(516		)	1,404		1,920		(358		)	1,562
		$	7,393	$	(4,298	)	$	3,095	$	7,393	$	(3,867	)	$	3,526
	As of March 31, 2015, the Company expects amortization expense in future periods to be as follows (in thousands):
	2015 (remainder)	$	1,294
	2016	1,288
	2017	513
	Total estimated future amortization expense	$	3,095
	Amortization expense was $0.4 million and $0.3 million for the three months ended March 31, 2015 and 2014, respectively.

Accrued_and_Other_Current_Liab

Accrued and Other Current Liabilities	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Accrued And Other Current Liabilities	Accrued Liabilities
	Accrued liabilities consisted of the following (in thousands):
		March 31,		December 31,
		2015		2014
	Accrued payroll-related expenses	$	4,862	$	9,270
	Accrued expenses	2,328		4,987
	Total accrued liabilities	$	7,190	$	14,257

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	Commitments and Contingencies
	Operating Lease Commitments
	The Company generally does not enter into long-term minimum purchase commitments. Its principal long-term commitments consist of obligations under operating leases for office space. There were no substantial changes to the Company’s contractual obligations or commitments during the three months ended March 31, 2015 as compared to those presented under the heading “Commitments and Contingencies” in Note 12 of the Notes to Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K filed with the SEC on March 2, 2015.
	Rent expense related to non-cancelable operating leases was $0.9 million for each of the three months ended March 31, 2015 and 2014, net of sublease income of $0.2 million and $0.1 million, respectively.
	Deferred Payment Obligations
	In connection with the Rockstar Transaction (see Note 5, "Patent Assets, Net"), the Company acquired certain common stock, convertible preferred stock, and redeemable convertible preferred stock investments held by the Seller. To fund the acquisition of these securities, the Company received funding of $6.3 million from a syndicate participant and seller financing of $5.9 million. These amounts are considered loans in the Company's condensed consolidated balance sheets and are recorded as current liabilities as they are expected to be repaid within 12 months. The loan received from the syndicate participant bears no interest and is repayable upon the sale of the common stock and convertible preferred stock securities. The amount repayable under this loan is limited to the proceeds received from the sale of the common and convertible preferred stock securities, up to a maximum amount of $6.3 million. The Company has elected to carry this loan at fair value and changes are reported in other income, net in the Company's condensed consolidated statements of operations. At March 31, 2015, the fair value of the loan was $4.4 million and was categorized as a Level 3 due to the significance of unobservable inputs developed using company-specific information. A gain of $0.1 million was recognized in the condensed consolidated statement of operations during the three months ended March 31, 2015 as a result of the changes in fair value of this loan and corresponding securities.
	The loan received from the Seller is carried at cost, bears no interest, and is repayable upon redemption or conversion of the redeemable convertible preferred stock. At March 31, 2015, the loan was recorded at $5.9 million.
	Litigation
	From time to time, the Company may be a party to various litigation claims in the normal course of business. Legal fees and other costs associated with such actions are expensed as incurred. The Company assesses, in conjunction with its legal counsel, the need to record a liability for litigation or contingencies. A liability is recorded when and if it is determined that such a liability for litigation or contingencies is both probable and reasonably estimable. No liability for litigation or contingencies was recorded as of March 31, 2015 or December 31, 2014.
	In June 2013, Kevin O’Halloran, as Trustee of the Liquidating Trust of Teltronics, Inc. (the “Debtor”), filed a complaint in the U.S. Bankruptcy Court for the Middle District of Florida against the Company and Harris Corporation (the “Defendants”). The complaint alleges that the Defendants are liable under federal and state bankruptcy law regarding fraudulent transfers for the value of a patent portfolio purchased by the Company from Harris Corporation pursuant to an agreement entered into in January 2009, and within four years of the date the Debtor filed its petition in bankruptcy. The Company is not currently able to determine whether there is a reasonable possibility that a loss has been incurred, nor can it estimate the potential loss or range of the potential loss that may result from this litigation.
	In March 2012, Cascades Computer Innovations LLC filed a complaint in U.S. District Court for the Northern District of California (the “Court”) against the Company and five of its clients (collectively the “Defendants”). The complaint alleges that the Defendants violated federal antitrust law, California antitrust law and California unfair competition law. The complaint further alleges that after we terminated our negotiations with the plaintiff to license certain patents held by the plaintiff, the Defendants violated the law by jointly refusing to negotiate or accept licenses under the plaintiff’s patents. The plaintiff seeks unspecified monetary damages and injunctive relief. In January 2013, the Court dismissed the complaint against the Defendants and granted the plaintiff leave to amend its complaint. In February 2013, the plaintiff filed an amended lawsuit alleging that the Defendants violated federal antitrust law, California antitrust law and California unfair competition law. In March 2014, the Court entered an order staying the litigation pending the resolution of related litigation in the U.S. District Court for the Northern District of Illinois, and has subsequently continued the stay until July 2015. We are not currently able to determine whether there is a reasonable possibility that a loss has been incurred, nor can we estimate the potential loss or range of the potential loss that may result from this litigation.
	Guarantees and Indemnifications
	The Company has, in connection with the sale of patent assets, agreed to indemnify and hold harmless the buyer of such patent assets for losses resulting from breaches of representations and warranties made by the Company. The terms of these indemnification agreements are generally perpetual. The maximum amount of potential future indemnification is unlimited. To date, the Company has not paid any amount to settle claims or defend lawsuits. The Company is unable to reasonably estimate the maximum amount that could be payable under these arrangements since these obligations are not capped but are conditional to the unique facts and circumstances involved. The Company had no liabilities recorded for these agreements as of March 31, 2015 or December 31, 2014. The Company has no reason to believe that there is any material liability related to such indemnification provisions. The Company does not indemnify its clients for patent infringement.
	In accordance with its amended and restated bylaws, the Company also indemnifies certain officers and employees for losses incurred in connection with actions, suits or proceedings threatened or brought against such officer or employee arising from his or her service to the Company as an officer or employee, subject to certain limitations. The term of the indemnification period is indefinite. The maximum amount of potential future indemnification is unspecified. The Company has no reason to believe that there is any material liability for actions, events or occurrences that have occurred to date.
	Reserves for Known and Incurred but not Reported Claims
	In August 2012, the Company began offering insurance to cover certain costs of litigation brought against its insured clients by NPEs. As of March 31, 2015, the Company had a total of 57 active policies and had recorded a reserve of $0.9 million for known and incurred but not reported claims that represent estimated claim costs and related expenses.
	The Company regularly reviews its loss reserves using a variety of actuarial techniques and updates them as its loss experience develops.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Stockholders Equity and Share-based Compensation [Abstract]
Stockholders' Equity	Stockholders’ Equity
	Equity Plans
	A summary of the Company’s activity under its equity-settled award plans and related information is as follows (in thousands, except per share data):
					Options Outstanding
		Shares Available for Grant			Number of Shares		Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Life in Years	Aggregate Intrinsic Value
	Balance - December 31, 2014	2,685			3,264		$	10.38
	Shares authorized(1)	1,000			—		—
	Options exercised	—			(165	)	4.46
	Options forfeited/canceled	76			(76	)	13.8
	Restricted stock units granted	(1,066	)		—		—
	Restricted stock units forfeited	345			—		—
	Restricted stock units withheld related to net-share settlement of restricted stock units	61			—		—
	Balance - March 31, 2015	3,101			3,023		10.61			5.7	$	14,240
	Vested and exercisable - March 31, 2015				2,425		10.92			5.7	11,077
	Vested and expected to vest - March 31, 2015				2,963		10.65			5.7	13,896
	(1) In March 2015, the Company reserved an additional 1,000,000 shares of its common stock for future issuance under the 2011 Plan.
	The aggregate intrinsic value of stock options exercised during the three months ended March 31, 2015 and 2014 was $1.6 million and $1.7 million, respectively. The total fair value of stock options vested during the three months ended March 31, 2015 and 2014 was $0.9 million and $1.7 million, respectively.
	Restricted Stock Units
	The summary of restricted stock unit activity, which includes performance-based restricted stock units with a market condition (“PBRSUs”), is as follows (in thousands, except per share data):
		Number of Shares			Weighted-Average Grant Date Fair Value			Aggregate Intrinsic Value
	Non-vested units - December 31, 2014	2,460			$	13.15
	Granted	1,066			13.51
	Vested	(163	)		13.82
	Forfeited	(345	)		13.03
	Non-vested units - March 31, 2015	3,018			13.25			$	43,435
	The total fair value of restricted stock units (“RSUs”) vested during the three months ended March 31, 2015 and 2014 was $2.3 million and $2.4 million, respectively.
	In October 2013, the Board of Directors approved net-share settlement for tax withholdings on RSU vesting. During the three months ended March 31, 2015, the Company withheld issuing 60,742 shares of its common stock based on the value of the RSUs on their vesting dates as determined by the Company’s closing common stock price. Total payments for employees’ minimum tax obligations to taxing authorities were $0.9 million for the three months ended March 31, 2015, and were recorded as a reduction to additional paid-in capital and reflected as a financing activity within the condensed consolidated statements of cash flows. The net-share settlements reduced the number of shares that would have otherwise been issued on the vesting date and increased the number of shares reserved for future issuance under the 2011 Plan.
	Stock-Based Compensation Related to Employees and Directors
	The fair value of RSUs granted to employees and directors is measured by reference to the fair value of the underlying shares on the date of grant.
	PBRSUs contain both service and market conditions that affect the quantity of awards that will vest. During the three months ended March 31, 2015 and 2014, the Company granted nil and 200,000 PBRSUs, respectively. The Company estimates the grant date fair value of PBRSUs using the Monte Carlo simulation model. The weighted-average assumptions used to estimate the fair value of PBRSUs and the resulting fair values are as follows:
		Three Months Ended March 31,
		2015		2014
	Dividend yield	n/a		—		%
	Risk-free rate	n/a		1.11		%
	Expected volatility	n/a		48		%
	Grant date fair value	n/a		$	7.47
	Stock-based compensation expense related to stock options granted to employees and directors was $0.7 million and $1.5 million for the three months ended March 31, 2015 and 2014, respectively. Stock-based compensation expense related to RSUs granted to employees and directors was $3.0 million and $2.2 million for the three months ended March 31, 2015 and 2014, respectively. Stock-based compensation expense related to PBRSUs granted to employees was $0.1 million and $0.2 million for the three months ended March 31, 2015 and 2014, respectively.
	As of March 31, 2015, there was $3.2 million and $36.2 million of unrecognized compensation cost related to stock options and RSUs, including PBRSUs, respectively, which is expected to be recognized over a weighted-average period of 1.2 years and 3.0 years, respectively. Future grants of equity awards will increase the amount of stock-based compensation expense to be recorded.
	Stock Repurchase Program
	On February 10, 2015, the Company announced that its Board of Directors has authorized a share repurchase program under which the Company is authorized to repurchase up to $75.0 million of its outstanding common stock with no expiration date from the date of authorization. As of March 31, 2015, $0.3 million of the $75.0 million had been utilized. Under the program, shares may be purchased in open market transactions, including through block purchases, through privately negotiated transactions, or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended, or the Exchange Act. The share repurchase program does not have an expiration date and may be suspended, terminated or modified at any time for any reason. The Company’s share repurchase program does not obligate it to acquire any specific number of shares. The Company repurchased shares of its common stock in the open market, which were retired upon repurchase, during the period presented as follows (in thousands, except per share data):
		Shares Repurchased			Average Price per Share			Value of Shares Repurchased
	Balance as of January 1, 2015	—			$	—		$	—
	Repurchase of shares of common stock	20			14.39			287.8
	Balance as of March 31, 2015	20			$	14.39		$	287.8

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The Company uses an estimated annual effective tax rate based upon a projection of its annual fiscal year results to measure the income tax benefit or expense recognized in each interim period. The Company’s effective tax rate, including the impact of discrete benefit items, was 38% for each three months ended March 31, 2015 and 2014, respectively.
	The Company’s 2010 tax year is currently under examination by the State of California Franchise Tax Board. The Company does not expect a material impact on its consolidated financial statements as a result of this examination. The 2011 through 2013 tax periods remain open to examination by the Internal Revenue Service and the 2010 through 2013 tax periods remain open to examination by most state tax authorities. For the Company's foreign jurisdictions, the 2009 through 2013 tax years remain open to examination by their respective tax authorities.

RelatedParty_Transactions

Related-Party Transactions	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related-Party Transactions
	During the three months ended March 31, 2015, five members of the Company’s Board of Directors also served on the boards of directors of RPX clients. During the three months ended March 31, 2014, four members of the Company’s Board of Directors also served on the boards of directors of RPX clients. The Company recognized subscription revenue from these clients in the amount of $2.4 million and $1.4 million for the three months ended March 31, 2015 and 2014, respectively. As of December 31, 2014, there was $0.1 million of receivables due from these clients. There were no receivables due from these clients on March 31, 2015.

Segment_Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting
	Operating segments are components of an enterprise about which separate financial information is available. Operating segments are reported in a manner consistent with the internal reporting provided to the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision maker is its Chief Executive Officer. The Company’s Chief Executive Officer reviews financial information presented on a consolidated basis and, as a result, the Company concluded that there is only one operating and reportable segment.
	The Company markets its solution to companies around the world. Revenue is generally attributed to geographic areas based on the country in which the client is domiciled.
	The following table presents revenue by location and revenue generated by country as a percentage of total revenue for the applicable period, for countries representing 10% or more of revenues for the periods presented (dollars in thousands):
		Three Months Ended March 31,
		2015				2014
	United States	$	55,185	66	%	$	37,105	60	%
	Japan	9,332		11		9,556		15
	Other	18,770		23		15,227		25
	Total revenue	$	83,287	100	%	$	61,888	100	%
	Long-lived assets information by location is presented below (in thousands):
		March 31,		December 31,
		2015		2014
	United States	$	4,218	$	4,137
	Japan	12		14
	Total long-lived assets	$	4,230	$	4,151

Basis_of_Presentation_and_Sign1

Basis of Presentation and Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation
	The accompanying condensed consolidated balance sheet as of March 31, 2015, the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive income and the condensed consolidated statements of cash flows for the three months ended March 31, 2015 and 2014, are unaudited. The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements which are included in the Company’s Form 10-K for the fiscal year ended December 31, 2014, which was filed with the U.S. Securities and Exchange Commission (“SEC”) on March 2, 2015. The unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.
	The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America and with the instructions for Form 10-Q and Regulation S-X for interim financial statements. Accordingly, they do not include all of the information and notes required for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring items, necessary to state fairly the results of the interim periods have been included in the accompanying financial statements. Operating results for the three months ended March 31, 2015 are not necessarily indicative of the results that may be expected for any subsequent interim period or for the year ending December 31, 2015.
	Recently Adopted Accounting Standards
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which will supersede most existing revenue recognition guidance in U.S. generally accepted accounting principles (“U.S. GAAP”) once it becomes effective. ASU 2014-09 requires an entity to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process than required under existing U.S. GAAP including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 will be effective for annual and interim periods beginning after December 15, 2016 and early adoption is not permitted. The Company is currently evaluating the impact of the adoption of ASU 2014-12 on its consolidated financial statements.
	Significant Accounting Policies
	There have been no material changes to the Company’s significant accounting policies during the three months ended March 31, 2015, as compared to the significant accounting policies presented under the heading “Basis of Presentation and Significant Accounting Policies” in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K filed with the SEC on March 2, 2015.
Recently Issued Accounting Standards	Recently Adopted Accounting Standards
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which will supersede most existing revenue recognition guidance in U.S. generally accepted accounting principles (“U.S. GAAP”) once it becomes effective. ASU 2014-09 requires an entity to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process than required under existing U.S. GAAP including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 will be effective for annual and interim periods beginning after December 15, 2016 and early adoption is not permitted. The Company is currently evaluating the impact of the adoption of ASU 2014-12 on its consolidated financial statements.

Net_Income_Per_Share_Tables

Net Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Basic and Diluted Net Income Per Share Available To Common Stockholders	The following table presents the calculation of basic and diluted net income per share (in thousands, except per share data):
		Three Months Ended March 31,
		2015			2014
	Numerator:
	Net income	$	18,031		$	9,860
	Denominator:
	Basic shares:
	Weighted-average shares used in computing basic net income per common share	54,175			52,803
	Diluted shares:
	Weighted-average shares used in computing basic net income per common share	54,175			52,803
	Dilutive effect of stock options and restricted stock units using the treasury-stock method	1,022			1,640
	Weighted-average shares used in computing diluted net income per common share	55,197			54,443
	Net income per common share:
	Basic	$	0.33		$	0.19
	Diluted	$	0.33		$	0.18
Anti-Dilutive Securities Not Included In Diluted Shares Outstanding Calculation	The following securities were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive (in thousands):
		Three Months Ended March 31,
		2015		2014
	Weighted-average:
	Stock options outstanding	922		798
	Restricted stock units outstanding	714		60

Financial_Instruments_Tables

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Finance Assets Measured At Fair Value On A Recurring Basis	The following tables present the Company's financial assets and liabilities measured at fair value on a recurring basis (in thousands):
		31-Mar-15
		Amortized Cost		Unrealized					Estimated Fair Value		Level 1		Level 2		Level 3
				Gains		Losses
	Assets:
	Cash equivalents:
	Commercial paper	$	16,599	$	—	$	—		$	16,599	$	—	$	16,599	$	—
	Municipal bonds	29,384		—		—			29,384		29,384		—		—
	Money market funds	2,573		—		—			2,573		—		2,573		—
		$	48,556	$	—	$	—		$	48,556	$	29,384	$	19,172	$	—
	Short-term investments:
	Municipal bonds	$	110,325	$	10	$	(21	)	$	110,314	$	—	$	110,314	$	—
	Commercial paper	8,790		—		—			8,790		—		8,790		—
	Corporate bonds	70,297		10		(31		)	70,276		—		70,276		—
	U.S. government and agency securities	56,403		16		(9		)	56,410		—		56,410		—
	Equity securities	6,620		—		—			6,620		685		5,935		—
		$	252,435	$	36	$	(61	)	$	252,410	$	685	$	251,725	$	—
	Liabilities:
	Current liabilities:
	Deferred payment obligation	$	4,355	$	—	$	—		$	4,355	$	—	$	—	$	4,355
		$	4,355	$	—	$	—		$	4,355	$	—	$	—	$	4,355
		31-Dec-14
		Amortized Cost		Unrealized					Estimated Fair Value		Level 1		Level 2		Level 3
				Gains		Losses
	Assets:
	Cash equivalents:
	Commercial paper	$	5,749	$	—	$	—		$	5,749	$	—	$	5,749	$	—
	U.S. government and agency securities	2,000		—		—			2,000		—		2,000		—
	Municipal bonds	1,409		—		—			1,409		—		1,409		—
	Money market funds	451		—		—			451		451		—		—
		$	9,609	$	—	$	—		$	9,609	$	451	$	9,158	$	—
	Short-term investments:
	Municipal bonds	$	120,270	$	24	$	(12	)	$	120,282	$	—	$	120,282	$	—
	Commercial paper	$	2,498	—		—			2,498		—		2,498		—
	Corporate bonds	$	68,758	1		(87		)	68,672		—		68,672		—
	U.S. government and agency securities	$	48,095	—		(33		)	48,062		—		48,062		—
		$	239,621	$	25	$	(132	)	$	239,514	$	—	$	239,514	$	—

Patent_Assets_Net_Tables

Patent Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Patent Assets, Net [Abstract]
Patent Assets, Net	Patent assets, net, consisted of the following (in thousands):
		December 31,			Additions			Dispositions			March 31,
		2014									2015
	Patent assets	$	665,290		$	53,636		$	(61	)	$	718,865
	Accumulated amortization	(428,941		)	(33,059		)	33			(461,967		)
	Patent assets, net	$	236,349								$	256,898
Expected Future Annual Amortization Of Patent Assets	As of March 31, 2015, the Company expects amortization expense in future periods to be as follows (in thousands):
	2015 (remainder)	$	93,531
	2016	96,032
	2017	45,922
	2018	14,106
	2019	6,864
	Thereafter	443
	Total estimated future amortization expense	$	256,898

Property_and_Equipment_Net_Tab

Property and Equipment, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment, Net, by Type [Abstract]
Property And Equipment, Net	Property and equipment, net, consisted of the following (in thousands):
		March 31,			December 31,
		2015			2014
	Internal-use software	$	5,929		$	5,358
	Leasehold improvements	1,799			1,799
	Computer, equipment and software	1,388			1,221
	Furniture and fixtures	818			818
	Construction-in-progress	—			167
	Total property and equipment, gross	9,934			9,363
	Less: Accumulated depreciation and amortization	(5,704		)	(5,212		)
	Total property and equipment, net	$	4,230		$	4,151

Intangible_Assets_Net_Tables

Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Net	Intangible assets, net, consisted of the following (in thousands):
		March 31, 2015							December 31, 2014
		Carrying Amount		Accumulated Amortization			Net Carrying Amount		Carrying Amount		Accumulated Amortization			Net Carrying Amount
	Proprietary data and models	$	2,100	$	(1,262	)	$	838	$	2,100	$	(1,119	)	$	981
	Trademarks	1,890		(1,628		)	262		1,890		(1,565		)	325
	Developed technology	433		(433		)	—		433		(433		)	—
	Customer relationships	1,050		(459		)	591		1,050		(392		)	658
	Covenant not to compete	1,920		(516		)	1,404		1,920		(358		)	1,562
		$	7,393	$	(4,298	)	$	3,095	$	7,393	$	(3,867	)	$	3,526
Expected Future Annual Amortization Of Intangible Assets	As of March 31, 2015, the Company expects amortization expense in future periods to be as follows (in thousands):
	2015 (remainder)	$	93,531
	2016	96,032
	2017	45,922
	2018	14,106
	2019	6,864
	Thereafter	443
	Total estimated future amortization expense	$	256,898
Intangible Assets Net
Acquired Finite-Lived Intangible Assets [Line Items]
Expected Future Annual Amortization Of Intangible Assets	As of March 31, 2015, the Company expects amortization expense in future periods to be as follows (in thousands):
	2015 (remainder)	$	1,294
	2016	1,288
	2017	513
	Total estimated future amortization expense	$	3,095

Accrued_and_Other_Current_Liab1

Accrued and Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Accrued And Other Current Liabilities	Accrued liabilities consisted of the following (in thousands):
		March 31,		December 31,
		2015		2014
	Accrued payroll-related expenses	$	4,862	$	9,270
	Accrued expenses	2,328		4,987
	Total accrued liabilities	$	7,190	$	14,257

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015											Mar. 31, 2014
Stockholders Equity and Share-based Compensation [Abstract]
Activity Under Equity Settled Award Plans And Related Information	A summary of the Company’s activity under its equity-settled award plans and related information is as follows (in thousands, except per share data):
				Options Outstanding
		Shares Available for Grant		Number of Shares		Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Life in Years	Aggregate Intrinsic Value
	Balance - December 31, 2014	2,685		3,264		$	10.38
	Shares authorized(1)	1,000		—		—
	Options exercised	—		(165	)	4.46
	Options forfeited/canceled	76		(76	)	13.8
	Restricted stock units granted	(1,066	)	—		—
	Restricted stock units forfeited	345		—		—
	Restricted stock units withheld related to net-share settlement of restricted stock units	61		—		—
	Balance - March 31, 2015	3,101		3,023		10.61			5.7	$	14,240
	Vested and exercisable - March 31, 2015			2,425		10.92			5.7	11,077
	Vested and expected to vest - March 31, 2015			2,963		10.65			5.7	13,896
	(1) In March 2015, the Company reserved an additional 1,000,000 shares of its common stock for future issuance under the 2011 Plan.
Restricted Stock Unit Activity	The summary of restricted stock unit activity, which includes performance-based restricted stock units with a market condition (“PBRSUs”), is as follows (in thousands, except per share data):
		Number of Shares		Weighted-Average Grant Date Fair Value			Aggregate Intrinsic Value
	Non-vested units - December 31, 2014	2,460		$	13.15
	Granted	1,066		13.51
	Vested	(163	)	13.82
	Forfeited	(345	)	13.03
	Non-vested units - March 31, 2015	3,018		13.25			$	43,435
Weighted-Average Assumptions Used To Estimate The Fair Value Of PBRSUs												The weighted-average assumptions used to estimate the fair value of PBRSUs and the resulting fair values are as follows:
													Three Months Ended March 31,
													2015	2014
												Dividend yield	n/a	—		%
												Risk-free rate	n/a	1.11		%
												Expected volatility	n/a	48		%
												Grant date fair value	n/a	$	7.47
Schedule of Repurchase Agreements
		Shares Repurchased		Average Price per Share			Value of Shares Repurchased
	Balance as of January 1, 2015	—		$	—		$	—
	Repurchase of shares of common stock	20		14.39			287.8
	Balance as of March 31, 2015	20		$	14.39		$	287.8

Segment_Reporting_Tables

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Revenue By Location	The following table presents revenue by location and revenue generated by country as a percentage of total revenue for the applicable period, for countries representing 10% or more of revenues for the periods presented (dollars in thousands):
		Three Months Ended March 31,
		2015				2014
	United States	$	55,185	66	%	$	37,105	60	%
	Japan	9,332		11		9,556		15
	Other	18,770		23		15,227		25
	Total revenue	$	83,287	100	%	$	61,888	100	%
Long-Lived Assets Information By Location	Long-lived assets information by location is presented below (in thousands):
		March 31,		December 31,
		2015		2014
	United States	$	4,218	$	4,137
	Japan	12		14
	Total long-lived assets	$	4,230	$	4,151

Net_Income_Per_Share_Detail_Ba

Net Income Per Share (Detail) - Basic and Diluted Net Income Per Share Available To Common Stockholders (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Net income	$18,031	$9,860
Net income available to common stockholders	$18,031	$9,860
Basic shares:
Weighted-average shares used in computing basic net income per common share	54,175	52,803
Diluted shares:
Dilutive effect of stock options and restricted stock units using the treasury-stock method	1,022	1,640
Weighted-average shares used in computing diluted net income per common share	55,197	54,443
Net income per common share:
Basic (dollars per common share)	$0.33	$0.19
Diluted (dollars per common share)	$0.33	$0.18

Net_Income_Per_Share_Detail_An

Net Income Per Share (Detail) - Anti-Dilutive Securities Not Included In Diluted Shares Outstanding Calculation	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Stock options outstanding
Weighted-average:
Weighted-average anti-dilutive securities	922	798
Restricted stock units outstanding
Weighted-average:
Weighted-average anti-dilutive securities	714	60

Financial_Instruments_Detail_F

Financial Instruments (Detail) - Financial Assets Measured At Fair Value On A Recurring Basis (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Proceeds from Deferred Payment Obligations	$6,270	$0
Amortized Cost	252,435		239,621
Unrealized Gains	36		25
Unrealized Losses	-61		-132
Estimated Fair Value	252,410		239,514
Cash equivalents
Cash equivalents	48,556		9,609
Short-term investments
Financial and Nonfinancial Liabilities, Fair Value Disclosure	4,355
Deferred Payment Obligations
Short-term investments
Debt Instrument, Fair Value Disclosure	4,355
Municipal bonds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	110,325		120,270
Unrealized Gains	10		24
Unrealized Losses	-21		-12
Estimated Fair Value	110,314		120,282
Commercial paper
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	8,790		2,498
Unrealized Gains	0		0
Unrealized Losses	0		0
Estimated Fair Value	8,790		2,498
Corporate bonds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	70,297		68,758
Unrealized Gains	10		1
Unrealized Losses	-31		-87
Estimated Fair Value	70,276		68,672
U.S. government and agency securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	56,403		48,095
Unrealized Gains	16		0
Unrealized Losses	-9		-33
Estimated Fair Value	56,410		48,062
Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	6,620
Unrealized Gains	0
Unrealized Losses	0
Estimated Fair Value	6,620
Commercial paper
Cash equivalents
Cash equivalents	16,599		5,749
Municipal bonds
Cash equivalents
Cash equivalents	29,384		1,409
Money market funds
Cash equivalents
Cash equivalents	2,573		451
U.S. government and agency securities
Cash equivalents
Cash equivalents			2,000
Level 1
Cash equivalents
Cash equivalents	29,384		451
Short-term investments
Short-term investments	685		0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0
Level 1 | Deferred Payment Obligations
Short-term investments
Debt Instrument, Fair Value Disclosure	0
Level 1 | Municipal bonds
Short-term investments
Short-term investments	0		0
Level 1 | Commercial paper
Short-term investments
Short-term investments	0		0
Level 1 | Corporate bonds
Short-term investments
Short-term investments	0		0
Level 1 | U.S. government and agency securities
Short-term investments
Short-term investments	0		0
Level 1 | Equity securities
Short-term investments
Short-term investments	685
Level 1 | Commercial paper
Cash equivalents
Cash equivalents	0		0
Level 1 | Municipal bonds
Cash equivalents
Cash equivalents	29,384		0
Level 1 | Money market funds
Cash equivalents
Cash equivalents	0		451
Level 1 | U.S. government and agency securities
Cash equivalents
Cash equivalents			0
Level 2
Cash equivalents
Cash equivalents	19,172		9,158
Short-term investments
Short-term investments	251,725		239,514
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0
Level 2 | Deferred Payment Obligations
Short-term investments
Debt Instrument, Fair Value Disclosure	0
Level 2 | Municipal bonds
Short-term investments
Short-term investments	110,314		120,282
Level 2 | Commercial paper
Short-term investments
Short-term investments	8,790		2,498
Level 2 | Corporate bonds
Short-term investments
Short-term investments	70,276		68,672
Level 2 | U.S. government and agency securities
Short-term investments
Short-term investments	56,410		48,062
Level 2 | Equity securities
Short-term investments
Short-term investments	5,935
Level 2 | Commercial paper
Cash equivalents
Cash equivalents	16,599		5,749
Level 2 | Municipal bonds
Cash equivalents
Cash equivalents	0		1,409
Level 2 | Money market funds
Cash equivalents
Cash equivalents	2,573		0
Level 2 | U.S. government and agency securities
Cash equivalents
Cash equivalents			2,000
Level 3
Cash equivalents
Cash equivalents	0		0
Short-term investments
Short-term investments	0		0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	4,355
Level 3 | Deferred Payment Obligations
Short-term investments
Debt Instrument, Fair Value Disclosure	4,355
Level 3 | Municipal bonds
Short-term investments
Short-term investments	0		0
Level 3 | Commercial paper
Short-term investments
Short-term investments	0		0
Level 3 | Corporate bonds
Short-term investments
Short-term investments	0		0
Level 3 | U.S. government and agency securities
Short-term investments
Short-term investments	0		0
Level 3 | Equity securities
Short-term investments
Short-term investments	0
Level 3 | Commercial paper
Cash equivalents
Cash equivalents	0		0
Level 3 | Municipal bonds
Cash equivalents
Cash equivalents	0		0
Level 3 | Money market funds
Cash equivalents
Cash equivalents	0		0
Level 3 | U.S. government and agency securities
Cash equivalents
Cash equivalents			$0

Shortterm_Investments_Detail_S

Short-term Investments (Detail) - Summary Of Investments In Available-For-Sale Securities (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Investment Holdings [Line Items]
Amortized Cost	$252,435	$239,621
Estimated Fair Value	252,410	239,514
Municipal bonds
Investment Holdings [Line Items]
Amortized Cost	110,325	120,270
Estimated Fair Value	110,314	120,282
Corporate bonds
Investment Holdings [Line Items]
Amortized Cost	70,297	68,758
Estimated Fair Value	70,276	68,672
Commercial paper
Investment Holdings [Line Items]
Amortized Cost	8,790	2,498
Estimated Fair Value	8,790	2,498
U.S. government and agency securities
Investment Holdings [Line Items]
Amortized Cost	56,403	48,095
Estimated Fair Value	$56,410	$48,062

Patent_Assets_Net_Detail

Patent Assets, Net (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 28, 2015	Dec. 26, 2012
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization - Additions	$400,000	$300,000
Subsidiaries [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			29,000,000
Contributions to Escrow Deposit				25,000,000
Number of Companies Involved in Syndicate			30
The Sellers [Member]
Finite-Lived Intangible Assets [Line Items]
Contributions to Escrow Deposit			875,000,000
Patents
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization - Additions	$33,059,000	$27,600,000
Patents | Subsidiaries [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			60 months
Minimum | Patents
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	24 months
Maximum | Patents
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	60 months
Weighted Average | Patents
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	45 months

Patent_Assets_Net_Detail_Paten

Patent Assets, Net (Detail) - Patent Assets, Net (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Finite-lived Intangible Assets [Roll Forward]
Patent assets, beginning balance	$7,393
Patent assets - Additions	28,636	56,153
Patent assets, ending balance	7,393
Accumulated amortization, beginning balance	-3,867
Accumulated amortization - Additions	-400	-300
Accumulated amortization, ending balance	-4,298
Patent assets, net	256,898		236,349
Patents
Finite-lived Intangible Assets [Roll Forward]
Patent assets, beginning balance	665,290
Patent assets - Additions	53,636
Patent assets - Sales	-61
Patent assets, ending balance	718,865
Accumulated amortization, beginning balance	-428,941
Accumulated amortization - Additions	-33,059	-27,600
Accumulated amortization - Sales	33
Accumulated amortization, ending balance	-461,967
Patent assets, net	$256,898		$236,349

Patent_Assets_Net_Detail_Expec

Patent Assets, Net (Detail) - Expected Future Annual Amortization Expense Of Patent Assets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]
2015 (remainder)	$1,294
2015	1,288
2016	513
Patent assets, net	256,898	236,349
Patents
Finite-Lived Intangible Assets [Line Items]
2015 (remainder)	93,531
2015	96,032
2016	45,922
2017	14,106
2018	6,864
Thereafter	443
Patent assets, net	$256,898	$236,349

Property_and_Equipment_Net_Det

Property and Equipment, Net (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$34,011	$28,418
Property and equipment, types
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$500	$500

Property_and_Equipment_Net_Det1

Property and Equipment, Net (Detail) - Property And Equipment, Net (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$9,934	$9,363
Less: Accumulated depreciation and amortization	-5,704	-5,212
Total property and equipment, net	4,230	4,151
Internal-use software
Property, Plant and Equipment [Line Items]
Internal-use software	5,929	5,358
Leasehold improvements
Property, Plant and Equipment [Line Items]
Leasehold improvements	1,799	1,799
Computer, equipment and software
Property, Plant and Equipment [Line Items]
Computer, equipment and software	1,388	1,221
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Furniture and fixtures	818	818
Construction-in-progress
Property, Plant and Equipment [Line Items]
Construction-in-progress	$0	$167

Goodwill_Details

Goodwill (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Goodwill [Roll Forward]
Balance as of December 31, 2013	$19,978	$19,978
Balance as of September 30, 2014	$19,978	$19,978

Intangible_Assets_Net_Detail

Intangible Assets, Net (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization of intangible assets	$0.40	$0.30

Intangible_Assets_Net_Detail_I

Intangible Assets, Net (Detail) - Intangible Assets, Net (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount	$7,393	$7,393
Accumulated amortization	-4,298	-3,867
Total estimated future amortization expense	3,095	3,526
Proprietary data and models
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount	2,100	2,100
Accumulated amortization	-1,262	-1,119
Total estimated future amortization expense	838	981
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount	1,890	1,890
Accumulated amortization	-1,628	-1,565
Total estimated future amortization expense	262	325
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount	433	433
Accumulated amortization	-433	-433
Total estimated future amortization expense	0	0
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount	1,050	1,050
Accumulated amortization	-459	-392
Total estimated future amortization expense	591	658
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount	1,920	1,920
Accumulated amortization	-516	-358
Total estimated future amortization expense	$1,404	$1,562

Intangible_Assets_Net_Detail_E

Intangible Assets, Net (Detail) - Estimated Future Amortization Expenses For Intangible Assets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Intangible Assets, Net (Excluding Goodwill) [Abstract]
2015 (remainder)	$1,294
2016	1,288
2017	513
Total estimated future amortization expense	$3,095	$3,526

Accrued_and_Other_Current_Liab2

Accrued and Other Current Liabilities (Detail) - Accrued And Other Current Liabilities (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Accrued liabilities	$7,190	$14,257
Accrued payroll-related expenses
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Accrued liabilities	4,862	9,270
Accrued expenses
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Accrued liabilities	$2,328	$4,987

Commitments_and_Contingencies_

Commitments and Contingencies (Detail) (USD $)	0 Months Ended	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2015	Mar. 31, 2014
	defendant	insurance_policy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest and Other Income		$121,000	$99,000
Rent expense related to non-cancelable operating leases net of sublease income		900,000	900,000
Sublease income		200,000	100,000
Proceeds from Deferred Payment Obligations		6,270,000	0
Loss Contingency, Number of Defendants	5
Debt Instrument, Repayable Upon Redemption, Preferred Stock		5,900,000
Number of active insurance policies		57
Reserves for known and incurred but not reported claims		900,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest and Other Income		$100,000

StockBased_Compensation_Detail

Stock-Based Compensation (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares of common stock reserved for issuance under the 2011 Plan (in shares)	1,000,000
Aggregate intrinsic value of stock options exercised	$1,600,000	$1,700,000
Total fair value of stock options vested	900,000	1,700,000
Total fair value of RSUs vested	2,300,000	2,400,000
Shares withheld for tax withholdings (in shares)	60,742
Total payments for the employees’ minimum tax obligations to taxing authorities	857,000	901,000
PBRSUs granted (in shares)	0	200,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	700,000	1,500,000
Unrecognized compensation cost related to unvested equity awards	3,200,000
Weighted-average service period of unrecognized compensation cost related to unvested equity awards	1 year 2 months 0 days
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	3,000,000	2,200,000
Unrecognized compensation cost related to unvested equity awards	36,200,000
Weighted-average service period of unrecognized compensation cost related to unvested equity awards	3 years 0 months 0 days
Performance-based restricted stock units with a market condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$100,000	$200,000
2011 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares of common stock reserved for issuance under the 2011 Plan (in shares)	1,000,000

StockBased_Compensation_Detail1

Stock-Based Compensation (Detail) - Activity Under Equity Award Plans And Related Information (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares Available for Grant - Outstanding, beginning balance (in shares)	2,685,000
Number of Shares - Outstanding, beginning balance (in shares)	3,264,000
Weighted-Average Exercise Price - Outstanding, beginning balance (in dollars per share)	$10.38
Shares Available for Grant - Shares authorized (in shares)	1,000,000
Number of Shares - Options exercised (in shares)	-165,000
Weighted Average Exercise Price - Options exercised (in dollars per share)	$4.46
Shares Available for Grant - Options forfeited/canceled	76,000
Number of Shares - Options forfeited/canceled (in shares)	-76,000
Weighted-Average Exercise Price - Options forfeited/canceled (in dollars per share)	$13.80
Share Available for Grant - Restricted stock units granted (in shares)	-1,066,000
Shares Available for Grant - Restricted stock units forfeited (in shares)	345,000
Shares Available for Grant - Restricted stock units withheld related to net-share settlement of restricted stock units (in shares)	61,000
Shares Available for Grant - Outstanding, ending balance (in shares)	3,101,000
Number of Shares - Outstanding, ending balance (in shares)	3,023,000
Weighted-Average Exercise Price - Outstanding, ending balance (in dollars per share)	$10.61
Outstanding (weighted-average contractual life)	5 years 8 months 24 days
Outstanding (intrinsic value)	$14,240
Vested and exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Vested and exercisable (shares)	2,425,000
Vested and exercisable (in dollars per share)	$10.92
Vested and exercisable (weighted-average contractual life)	5 years 8 months 18 days
Vested and exercisable (intrinsic value)	11,077
Vested and expected to vest
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Vested and expected to vest (shares)	2,963,000
Vested and expected to vest (in dollars per share)	$10.65
Vested and expected to vest (weighted-average contractual life)	5 years 8 months 24 days
Vested and expected to vest (intrinsic value)	$13,896

StockBased_Compensation_Detail2

Stock-Based Compensation (Detail) - Restricted Stock Unit Activity (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested units, beginning balance (in shares)		2,460,000
Non-vested units, beginning balance (in dollars per share)		$13.15
Non-vested units, ending balance (in shares)	3,018,000	2,460,000
Non-vested units, ending balance (in dollars per share)	$13.25	$13.15
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, intrinsic value	$43,435
Restricted stock units granted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares)	1,066,000
Granted (in dollars per share)	$13.51
Restricted stock units vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Vested (in shares)	-163,000
Vested (in dollars per share)	$13.82
Restricted stock units forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Forfeited (in shares)	-345,000
Forfeited (in dollars per share)	$13.03

StockBased_Compensation_Detail3

Stock-Based Compensation (Detail) - Weighted Average Assumptions To Estimate The Fair Value Of Equity Awards (USD $)	3 Months Ended
	Mar. 31, 2014
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield	0.00%
Performance-based restricted stock units with a market condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate	1.11%
Expected volatility	48.00%
Grant date fair value	7.47

Stockholders_Equity_StockBased

Stockholders' Equity Stock-Based Compensation (Details) (USD $)	3 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Stock Repurchase [Abstract]
Repurchase of shares of common stock	20
Balance as of March 31, 2015	$20,000	$0
Balance as of January 1, 2015	$0
Repurchase of shares of common stock	$14.39
Balance as of March 31, 2015	$14.39
Balance as of January 1, 2015	0
Repurchase of shares of common stock	288,000
Balance as of March 31, 2015	287,800
Authorized share repurchases	$75,000,000

Income_Taxes_Income_Taxes_Deta

Income Taxes Income Taxes (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Effective tax rate	38.00%	38.00%

RelatedParty_Transactions_Deta

Related-Party Transactions (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Related Party Transactions [Abstract]
Subscription fee revenue from related party transaction	$2,400,000	$1,400,000
Receivables due from related parties	$0		$100,000

Segment_Reporting_Detail

Segment Reporting (Detail)	3 Months Ended
	Mar. 31, 2015
	segment
Segment Reporting [Abstract]
Number of reportable segments	1

Segment_Reporting_Detail_Reven

Segment Reporting (Detail) - Revenue By Location (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Total revenue	$83,287	$61,888
Total revenue	100.00%	100.00%
United States
Segment Reporting Information [Line Items]
United States	66.00%	60.00%
Total revenue	55,185	37,105
Japan
Segment Reporting Information [Line Items]
Other foreign country	11.00%	15.00%
Total revenue	9,332	9,556
Other
Segment Reporting Information [Line Items]
Other foreign country	23.00%	25.00%
Total revenue	$18,770	$15,227

Segment_Reporting_Detail_Longl

Segment Reporting (Detail) - Long-lived Asset Information By Location (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$4,230	$4,151
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	4,218	4,137
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$12	$14