Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Commercial paper Commercial Paper [Member] U.S. government and agency securities US Government Corporations and Agencies Securities [Member] Municipal bonds Municipal Bonds [Member] Money market funds Money Market Funds [Member] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Corporate bonds Corporate Bond Securities [Member] U.S. government and agency securities Equity securities Equity Securities [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Other Debt Obligations Other Debt Obligations [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Document Period End Date Document Period End Date Held-to-maturity Securities, Unrecognized Holding Gain Held-to-maturity Securities, Unrecognized Holding Gain Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term investments, amortized Cost Available-for-sale Securities, Amortized Cost Basis Short-term investments, unrealized gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Short-term investments, unrealized losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Short-term investments, total estimated fair value Available-for-sale Securities Short-term investments, estimated fair value Investments, Fair Value Disclosure Deferred payment obligation, amortized cost Debt Instrument, Amortized Cost Debt Instrument, Amortized Cost Deferred payment obligation, unrealized gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Deferred payment obligation, estimated fair value Debt Instrument, Fair Value Disclosure Statement of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments Short-term Investments Restricted cash Restricted Cash and Cash Equivalents, Current Accounts receivable Accounts Receivable, Gross, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Deferred tax assets Deferred Tax Assets, Gross, Current Total current assets Assets, Current Patent assets, net Patent assets, net Carrying amount of finite-lived patent assets after accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights. Property and equipment, net Property, Plant and Equipment, Net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Goodwill Goodwill Restricted cash, less current portion Restricted Cash and Cash Equivalents, Noncurrent Deferred tax assets, less current portion Deferred Tax Assets, Net, Noncurrent Other assets Other Assets, Noncurrent Total assets Assets Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities Accrued Liabilities, Current Deferred revenue Deferred Revenue, Current Deferred payment obligations Other Long-term Debt, Current Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Deferred revenue, less current portion Deferred Revenue, Noncurrent Deferred tax liabilities Noncurrent Deferred Tax Liabilities Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdictionto which the entity is obligated to pay income tax, as well as the noncurrent portion of the amount recognized for unceratin tax position as of the balance sheet date. Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 10) Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Stockholders Equity and Share-based Compensation [Abstract] Stockholders Equity and Share-based Compensation [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Vested and exercisable Vestedand Exercisable [Member] Vested and expected to vest Vestedand Expectedto Vest [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Shares Available for Grant - Outstanding, beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Number of Shares - Outstanding, beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Weighted-Average Exercise Price - Outstanding, beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average 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Award, Options, Forfeitures in Period, Weighted Average Exercise Price Share Available for Grant - Restricted stock units granted (in shares) Share Available for grant - Restricted stock units granted Share Available for grant - Restricted stock units granted Shares Available for Grant - Restricted stock units forfeited (in shares) Shares Available for Grant - Restricted stock units forfeited Shares Available for Grant - Restricted stock units forfeited Shares Available for Grant - Restricted stock units withheld related to net-share settlement of restricted stock units (in shares) Share Available for Grant - Restricted stock units withheld related to net-share settlement of restricted stock units Share Available for Grant - Restricted stock units withheld related to net-share settlement of restricted stock units Shares Available for Grant - Outstanding, ending balance (in shares) Number of Shares - Outstanding, ending balance (in shares) Weighted-Average Exercise Price - Outstanding, ending balance (in dollars per share) Outstanding (weighted-average contractual life) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Outstanding (intrinsic value) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Vested and exercisable (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Vested and exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Vested and exercisable (weighted-average contractual life) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Vested and exercisable (intrinsic value) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Vested and expected to vest (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Vested and expected to vest (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Vested and expected to vest (weighted-average contractual life) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Vested and expected to vest (intrinsic value) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Segment Reporting [Abstract] Number of reportable segments Number of Reportable Segments Performance-based restricted stock units with a market condition Performance Shares [Member] Risk-free rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Short-term Investments [Abstract] Investment Holdings [Table] 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Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares repurchased, balance as of beginning of period Share Repurchase Utilized Share Repurchase Utilized to date Shares repurchased, repurchase of shares of common stock Stock Repurchased and Retired During Period, Shares Shares repurchased, balance as of end of period Shares repurchased, average price per share at beginning of period (usd per share) Stock Repurchased, Accumulated, Weighted Average Price Stock Repurchased, Accumulated, Weighted Average Price Shares repurchased, average price per share for repurchase of shares of common stock (usd per share) Stock Repurchased During Period Weighted Average Price Stock Repurchased During the Period Weighted Average Price per Share Shares repurchased, average price per share at end of period (usd per share) Shares repurchased, value of shares repurchased as of beginning of period Stock Repurchased, Accumulated Value Stock Repurchased, Accumulated Value Shares repurchased, value of repurchase of shares of common stock Stock Repurchased During Period, Value Shares repurchased, value of shares repurchased as of end of period Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Stock-based compensation Depreciation, Depletion and Amortization Stock-based compensation Share-based Compensation Excess tax benefit from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Gain on sale of patent assets, net Gain (Loss) on Disposition of Other Assets Amortization of premium on investments Accretion (Amortization) of Discounts and Premiums, Investments Deferred taxes Deferred Income Tax Expense (Benefit) Fair value adjustments on deferred payment obligations Liabilities, Fair Value Adjustment Other Other Noncash Income (Expense) Changes in assets and liabilities, net of business acquired: Payments to Acquire Businesses, Net of Cash Acquired [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Deferred revenue Increase (Decrease) in Deferred Revenue Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Additional Cash Flow Elements, Investing Activities [Abstract] Purchases of investments Payments to Acquire Available-for-sale Securities Maturities of investments Proceeds from Maturities, Prepayments and Calls of Available-for-sale 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Options Taxes paid related to net-share settlements of restricted stock units Payments Related to Tax Withholding for Share-based Compensation Excess tax benefit from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Repurchase of common stock Payments for Repurchase of Common Stock Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Non-cash investing and financing activities Noncash Investing and Financing Items [Abstract] Change in patent assets purchased and accrued but not paid Change in patent assets purchased and accrued but not paid. Change in fixed assets purchased and accrued but not paid Capital Expenditures Incurred but Not yet Paid Change in other assets purchased and accrued but not paid Change in other assets purchased and accrued but not paid Unpaid cash consideration for business acquisition Business Combination, Cash Consideration Not Yet Paid and Equity Interests Issued and Issuable Business Combination, Cash Consideration Not Yet Paid and Equity Interests Issued and Issuable Nonmonetary exchange for investments Noncash or Part Noncash Acquisition, Debt Assumed Earnings Per Share [Abstract] Net income available to common stockholders: Net income available to common stockholders: [Abstract]0 Numerator: Numerator: [Abstract] Denominator: Denominator: [Abstract] Basic shares: Basic shares: [Abstract] Weighted-average shares used in computing basic net income per share Weighted Average Number of Shares Outstanding, Basic Diluted shares: Diluted shares: [Abstract] Dilutive effect of stock options and 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Relationships [Member] Trademarks Trademarks [Member] Developed technology Developed Technology Rights [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Amortization of intangible assets Amortization of Intangible Assets Carrying amount Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Total estimated future amortization expense Finite-Lived Intangible Assets, Net Patent Assets, Net [Abstract] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Patents Patents [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] 2015 (remainder) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2017 Finite-Lived 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(Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Net income per share: Net income per common share: [Abstract] Weighted-average shares used in computing net income per share: Weighted-average shares used in computing net income per common share: [Abstract] Basic (in shares) Diluted (in shares) Basic and Diluted Net Income Per Share Available To Common Stockholders Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Anti-Dilutive Securities Not Included In Diluted Shares Outstanding Calculation Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES 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Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income, net of tax: Available-for-sale Securities, Gross Unrealized Gain (Loss) [Abstract] Unrealized holding losses on available-for-sale securities arising during the period, net of tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Patent Assets, Net PatentAssetsTextBlock [Table Text Block] Patent assets. 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No documentation exists for this element. -- Expected Future Annual Amortization Of Patent Assets Related-party transactions Related Party Transactions Disclosure [Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Debt Instrument, Amortized Cost Loss Contingency, Number of Defendants Loss Contingency, Number of Defendants Rent expense related to non-cancelable operating leases net of sublease income Operating Leases, Rent Expense, Net Sublease income Operating Leases, Rent Expense, Sublease Rentals Repayments of Deferred Payment Obligations Number of active insurance policies Number of Active Insurance Policies The number of active insurance policies as of the Company's balance sheet date. 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