Equity [Abstract] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income Disclosure [Text Block] Accumulated Other Comprehensive Income Disclosure [Text Block] Statement of Comprehensive Income [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Available-for-sale debt securities: AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Cash flow hedges: Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Net income Net Income (Loss) Attributable to Parent Change in net unrealized gain (loss) OCI, before Reclassifications, Net of Tax, Attributable to Parent Reclassification adjustment Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill and Intangible Assets [Table] Schedule of Goodwill and Intangible Assets [Table] Schedule of Goodwill and Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Developed technology Developed Technology Rights [Member] Patent licenses Patents [Member] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Intangible assets not subject to amortization [Member] Intangible assets not subject to amortization [Member] Intangible assets not subject to amortization [Member] Schedule of Goodwill and Intangible Assets [Line Items] Schedule of Goodwill and Intangible Assets [Line Items] [Line Items] for Schedule of Goodwill and Intangible Assets [Table] Weighted Average Life (Years) Finite-Lived Intangible Asset, Useful Life Weighted Average Remaining Life (Years) Finite-Lived Intangible Assets, Remaining Amortization Period Cost Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Book Value Finite-Lived Intangible Assets, Net Intangible assets not subject to amortization Indefinite-lived Intangible Assets (Excluding Goodwill) Total intangible assets, net Intangible Assets, Net (Excluding Goodwill) Amortization of intangible assets Amortization of Intangible Assets Goodwill Goodwill Share-based Payment Arrangement [Abstract] Stock-based Compensation Share-based Payment Arrangement [Text Block] Stockholder's Equity Stockholders' Equity Note Disclosure [Text Block] 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 marketable securities Marketable Securities, Current Accounts receivable, net of allowance of $640 and $585 as of March 31, 2020 and December 31, 2019, respectively Accounts Receivable, after Allowance for Credit Loss, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Long-term marketable securities Marketable Securities, Noncurrent Property and equipment, net Property, Plant and Equipment, Net Operating Lease, Right-of-Use Asset Operating Lease, Right-of-Use Asset Deferred tax assets, net Deferred Income Tax Assets, Net Intangible assets, net Long-term investment Long-term Investments Restricted cash Restricted Cash and Cash Equivalents, Noncurrent Other noncurrent 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 revenues, current Contract with Customer, Liability, Current Finance Lease, Liability, Current Operating Lease, Liability, Current Operating Lease, Liability, Noncurrent Operating Lease, Liability, Noncurrent Total current liabilities Liabilities, Current Deferred revenues, noncurrent Contract with Customer, Liability, Noncurrent Other noncurrent liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 9) Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.001 par value; 20,000,000 shares authorized, no shares issued and outstanding at March 31, 2020 and December 31, 2019 Preferred Stock, Value, Issued Common stock, $0.001 par value; 1,000,000,000 shares authorized; 39,024,673 and 39,146,272 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Schedule of changes to accumulated other comprehensive income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Segment Reporting [Abstract] Segment Information and Information about Geographic Area Segment Reporting Disclosure [Text Block] Property, Plant and Equipment [Abstract] Schedule of Property, Plant and Equipment [Table] 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[Member] Leasehold improvements Leasehold Improvements [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment Property, Plant and Equipment, Gross Finance leases - right of use asset Finance Lease, Right-of-Use Asset Less: accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Depreciation and amortization expense Depreciation, Depletion And Amortization, Excluding Intangible Asset Amortization Depreciation, Depletion And Amortization, Excluding Intangible Asset Amortization Capital leases, accumulated depreciation Accumulated Depreciation, Capital Leases Accumulated Depreciation, Capital Leases Revenue from Contract with Customer [Abstract] Commission asset, current Commission Asset, Current Commission Asset, Current Commission asset, noncurrent Commission Asset, Non-current Commission Asset, Non-current Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] amortized cost [Member] amortized cost [Member] amortized cost [Member] Cash [Member] Cash [Member] Money market funds Money Market Funds [Member] Corporate bonds Corporate Bond Securities [Member] Commercial Paper [Member] Commercial Paper [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Asset backed securities Asset-backed Securities [Member] US Treasury Bill Securities [Member] US Treasury Bill Securities [Member] US government agencies US Government Agencies Debt Securities [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Cash and Cash Equivalents, Line Item [Member] Cash and Cash Equivalents, Line Item [Member] Cash and Cash Equivalents, Line Item [Member] Cash and cash equivalents: Cash and Cash Equivalents [Member] Short-term investments Available-for-sale Securities, Line Item [Member] Available-for-sale Securities, Line Item [Member] Current Assets [Member] Current Assets [Member] Current Assets [Member] Long-term investments Noncurrent Assets [Member] Noncurrent Assets [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Fair Value, Recurring [Member] Fair Value, Recurring [Member] Reported Value Measurement [Member] Reported Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and Cash Equivalents, Fair Value Disclosure Cash and Cash Equivalents, Fair Value Disclosure Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Unrealized (Losses) Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Available-for-sale Securities, Current Investments, Fair Value Disclosure Investments, Fair Value Disclosure US Government Agencies Securities, at Carrying Value US Government Agencies Securities, at Carrying Value Commercial Paper, at Carrying Value Commercial Paper, at Carrying Value Asset-Backed Securities, at Carrying Value Asset-Backed Securities, at Carrying Value Money Market Funds, at Carrying Value Money Market Funds, at Carrying Value Debt Securities, Available-for-sale, Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Available-for-sale Securities, Amortized Cost Basis Available-for-sale Securities, Amortized Cost Basis Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Carrying value of intangible assets Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Intangible assets future periods amortization expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Leases [Abstract] Assets And Liabilities, Lease [Table Text Block] Assets And Liabilities, Lease [Table Text Block] Assets And Liabilities, Lease [Table Text Block] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Finance Lease, Liability, Maturity [Table Text Block] Finance Lease, Liability, Maturity [Table Text Block] Lease, Cost [Table Text Block] Lease, Cost [Table Text Block] Business Combinations [Abstract] Business Combination Business Combination Disclosure [Text Block] Accounting Policies [Abstract] Description Of Business Description Of Business Policy [Policy Text Block] Description Of Business Policy [Policy Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Recently adopted Accounting Pronouncements and Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Developed Technology [Member] Developed Technology [Member] Developed Technology [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 1Mobility 1Mobility [Member] 1Mobility [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Business Combination, Deferred Consideration Payment Period Business Combination, Deferred Consideration Payment Period Business Combination, Deferred Consideration Payment Period Total purchase price Business Combination, Consideration Transferred Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Estimated useful life of technology-based intangible assets Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Leases Lessee, Operating Leases [Text Block] Leases Lessee, Finance Leases [Text Block] Commission asset balances Contract With Customer, Commission Asset Balances [Table Text Block] Contract With Customer, Commission Asset Balances [Table Text Block] Contract liabilities Contract with Customer, Asset and Liability [Table Text Block] Expected revenue from contracts Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Revenue by sales channel Disaggregation of Revenue [Table Text Block] Outstanding Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Ending balance (in shares) Vested and expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Weighted average exercise price, Beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted average exercise price, exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price, canceled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Weighted average exercise price, Ending balance (in dollars per share) Weighted average exercise price, 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 Weighted average exercise price, 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 Weighted Average Remaining Contractual Life Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term [Abstract] Weighted average remaining contractual life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted Average Remaining Contractual Life (Years), Vested and Expected to Vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted Average Remaining Contractual Life (Years), Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value [Abstract] Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Aggregate intrinsic value, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Revenues be geographic area Revenues and property and equipment, net, by geographic area Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Investments, All Other Investments [Abstract] Statement [Table] Statement [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Preferred Stock [Member] Preferred Stock [Member] Convertible Debt Securities [Member] Convertible Debt Securities [Member] Statement [Line Items] Statement [Line Items] Payments to Acquire Investments Payments to Acquire Investments Investments Investments Other than Temporary Impairment Losses, Investments Other than Temporary Impairment Losses, Investments Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Investments, Debt and Equity Securities [Abstract] Other Investment Not Readily Marketable [Table] Other Investment Not Readily Marketable [Table] Other Investment Not Readily Marketable [Line Items] Other Investment Not Readily Marketable [Line Items] Investment Income, Investment Expense Investment Income, Investment Expense Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Nature of Expense [Axis] Nature of Expense [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Derivative, by Nature [Axis] Derivative Instrument [Axis] Derivative, Name [Domain] Derivative Contract [Domain] Forward Contracts Forward Contracts [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Net gain from non-designated forward contracts Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Other foreign currency transactions loss Foreign Currency Transaction Gain (Loss), before Tax Total foreign exchange loss, net Foreign Currency Transaction Gain (Loss) Including Derivatives, Before Tax Foreign Currency Transaction Gain (Loss) Including Derivatives, Before Tax Other Nonoperating Expense Other Nonoperating Expense Other expense, net Other Nonoperating Income (Expense) Earnings Per Share [Abstract] Numerator: Numerator [Abstract] Numerator [Abstract] Denominator: Denominator [Abstract] Denominator [Abstract] Basic (shares) Weighted Average Number of Shares Outstanding, Basic Common stock options (shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Restricted stock units (shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Basic (USD per share) Earnings Per Share, Basic Diluted (USD per share) Earnings Per Share, Diluted Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options Share-based Payment Arrangement, Option [Member] Restricted Stock Units Restricted Stock Units (RSUs) [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Antidilutive Securities [Abstract] Antidilutive Securities [Abstract] Antidilutive securities (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Employee stock-based compensation Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Stock option activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Restricted stock units activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Allowance for doubtful accounts receivable Accounts Receivable, Allowance for Credit Loss Preferred stock, par or stated value per share (USD per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par or stated value per share (USD per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Subscription Revenue Subscription Revenue [Member] Subscription Revenue [Member] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Capitalized Contract Cost, Impairment Loss Capitalized Contract Cost, Impairment Loss Capitalized Contract Cost, Amortization Period Capitalized Contract Cost, Amortization Period Amortization of commissions assets Amortization of Deferred Sales Commissions Revenue recognized Revenue from Contract with Customer, Excluding Assessed Tax Statement of Stockholders' Equity [Abstract] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Retained Earnings Retained Earnings [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Balance (in shares) Shares, Outstanding Net income Retained Earnings (Accumulated Deficit) Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Change in unrealized loss on investments Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax Issuance of common stock upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Issuance of common stock upon exercise of stock options (shares) Stock Repurchased During Period, Shares Stock Repurchased During Period, Shares Treasury Stock, Value, Acquired, Cost Method Stock Repurchased During Period, Value Adjustment To Additional Paid In Capital, Share-Based Compensation, Taxes Related To Net Share Settlements Of Equity Awards Adjustment To Additional Paid In Capital, Share-Based Compensation, Taxes Related To Net Share Settlements Of Equity Awards Adjustment To Additional Paid In Capital, Share-Based Compensation, Taxes Related To Net Share Settlements Of Equity Awards Issuance of common stock upon vesting of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Vested Stock Issued During Period, Shares, Restricted Stock Award, Vested Taxes from release of the restricted share units APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Ending balance Balance (in shares) Property and equipment, net Property, Plant and Equipment [Table Text Block] Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] 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] Depreciation and amortization expense Depreciation, Depletion and Amortization Accounts Receivable, Credit Loss Expense (Reversal) Accounts Receivable, Credit Loss Expense (Reversal) Bad debt expense Gain (Loss) on Disposition of Property Plant Equipment Stock-based compensation Share-based Payment Arrangement, Noncash Expense Amortization of accretion of discounts on marketable securities Accretion (Amortization) of Discounts and Premiums, Investments Deferred income taxes Deferred Income Taxes and Tax Credits Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [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 liabilities Increase (Decrease) in Accrued Liabilities Deferred revenues Increase (Decrease) in Contract with Customer, Liability Other non-current liabilities Increase (Decrease) in Other Noncurrent Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of marketable securities Payments to Acquire Marketable Securities Sales and maturities of marketable securities Proceeds from Sale and Maturity of Marketable Securities Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Business combinations Payments to Acquire Businesses, Gross Net cash provided by investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Payments for taxes related to net share settlement of equity awards Payment, Tax Withholding, Share-based Payment Arrangement Principal payments under finance lease obligations Repayments of Long-term Capital Lease Obligations Repurchase of common stock Payments for Repurchase of Common Stock Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Net increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents and restricted cash at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value Estimate of Fair Value Measurement [Member] Commercial paper Certificates of Deposit [Member] Certificates of Deposit [Member] Municipal Bonds [Member] Municipal Bonds [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] 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] Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value Available-for-sale Securities, Debt and Equity Maturities, After Year Two, Fair Value Available-for-sale Securities, Debt and Equity Maturities, After Year Two, Fair Value Available-for-sale Securities, Debt and Equity Maturities, After Year Two, Fair Value Available-for-sale Securities Available-for-sale Securities Debt Securities, Available-for-sale Debt Securities, Available-for-sale Financial Instruments, Owned, Corporate Debt, at Fair Value Financial Instruments, Owned, Corporate Debt, at Fair Value Mortgage-backed Securities Available-for-sale, Fair Value Disclosure Mortgage-backed Securities Available-for-sale, Fair Value Disclosure Financial Instruments, Owned, at Fair Value Financial Instruments, Owned, at Fair Value Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Direct Sales Channel, Directly to Consumer [Member] Partner Sales Channel, Through Intermediary [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenues Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Accrued Liabilities [Member] Other Noncurrent Liabilities [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Operating Lease, Payments Operating Lease, Payments Arrangement interest rate Capital Leased Assets, Interest Rate Capital Leased Assets, Interest Rate Lease, Expense Lease, Expense Lease, Expense Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Discount Rate, Percent Operating Lease, Weighted Average Discount Rate, Percent Finance Lease, Weighted Average Discount Rate, Percent Finance Lease, Weighted Average Discount Rate, Percent Lease, Right-of-Use Asset Lease, Right-of-Use Asset Lease, Right-of-Use Asset Operating Lease, Liability, Current Finance Lease, Liability, Current Finance Lease, Liability, Current Finance Lease, Liability, Noncurrent Finance Lease, Liability, Noncurrent Lease, Liability Lease, Liability Lease, Liability Finance Lease, Liability, Payments, Remainder of Fiscal Year Finance Lease, Liability, Payments, Remainder of Fiscal Year Lessee, Operating Lease, Liability, Payments, Due Year Two Lessee, Operating Lease, Liability, Payments, Due Year Two Finance Lease, Liability, Payments, Due Year Two Finance Lease, Liability, Payments, Due Year Two Lessee, Operating Lease, Liability, Payments, Due Year Three Lessee, Operating Lease, Liability, Payments, Due Year Three Finance Lease, Liability, Payments, Due Year Three Finance Lease, Liability, Payments, Due Year Three Lessee, Operating Lease, Liability, Payments, Due Year Four Lessee, Operating Lease, Liability, Payments, Due Year Four Finance Lease, Liability, Payments, Due Year Four Finance Lease, Liability, Payments, Due Year Four Lessee, Operating Lease, Liability, Payments, Due Year Five Lessee, Operating Lease, Liability, Payments, Due Year Five Finance Lease, Liability, Payments, Due Year Five Finance Lease, Liability, Payments, Due Year Five Lessee, Operating Lease, Liability, Payments, Due after Year Five Lessee, Operating Lease, Liability, Payments, Due after Year Five Finance Lease, Liability, Payments, Due after Year Five Finance Lease, Liability, Payments, Due after Year Five Lessee, Operating Lease, Liability, Payments, Due Lessee, Operating Lease, Liability, Payments, Due Finance Lease, Liability, Payment, Due Finance Lease, Liability, Payment, Due Lessee, Operating Lease, Liability, Undiscounted Excess Amount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Finance Lease, Liability, Undiscounted Excess Amount Finance Lease, Liability, Undiscounted Excess Amount Operating Lease, Liability Operating Lease, Liability Finance Lease, Liability Finance Lease, Liability Right-of-Use 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Shell Company Entity Shell Company Entity Central Index Key Entity Central Index Key Document Type Document Type Entity File Number Entity File Number Document Period End Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus 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 Entity Tax Identification Number Entity Tax Identification Number Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code Revenue, Remaining Performance 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Maturities Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share Based Compensation, Vesting Increments Share Based Compensation, Vesting Increments Share Based Compensation, Vesting Increments Share-Based Compensation, Termination Period Trigger Share-Based Compensation, Termination Period Trigger Share-Based Compensation, Termination Period Trigger Share-Based Compensation, Percentage Of Shares That Will Vest Upon Trigger Share-Based Compensation, Percentage Of Shares That Will Vest Upon Trigger Share-Based Compensation, Percentage Of Shares That Will Vest Upon Trigger Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period As A Percentage Of Target Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period As A Percentage Of Target Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period As A Percentage Of Target Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Target Number Of Shares Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Target Number Of Shares Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Target Number Of Shares Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Statement of 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[Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2012 Equity Incentive Plan 2012 Equity Incentive Plan [Member] 2012 Equity Incentive Plan [Member] 2000 Equity Incentive Plan 2000 Equity Incentive Plan [Member] 2000 Equity Incentive Plan [Member] Number of shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Outstanding RSUs Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Released (in shares) Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending balance (in shares) Outstanding and expected to vest (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested And Expected To Vest, Outstanding, Number Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested And Expected To Vest, Outstanding, Number Weighted Average Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Beginning balance (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Released (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Canceled (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending balance (usd per share) Outstanding and expected to vest (usd per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested And Expected To Vest, Outstanding, Weighted Average Exercise Price Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested And Expected To Vest, Outstanding, Weighted Average Exercise Price The Company and Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Goodwill and Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block]