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Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Proceeds from a public equity offering Proceeds From A Public Equity Offering Proceeds From A Public Equity Offering Convertible senior notes due 2023 Convertible Senior Notes Due2023 [Member] Represents convertible senior notes that will mature in 2023. 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Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities Class A common stock in escrow Class A Common Stock Held In Escrow [Member] Class A Common Stock Held In Escrow Derivative, notional amount Derivative, Notional Amount Foreign Currency Fair Value Hedge Derivative [Line Items] Foreign Currency Fair Value Hedge Derivative [Line Items] Other (expenses) income, net Other Nonoperating Income (Expense) Fair value of the notes Long-term Debt, Fair Value Senior Notes 3.875 Percent Due 2031 Senior Notes 3.875 Percent Due 2031 [Member] Senior Notes 3.875 Percent Due 2031 Purchases of long-lived and intangible assets Payments to Acquire Property, Plant, and Equipment Liability for uncertain tax positions Other Liabilities, Current Maximum Maximum [Member] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Entity Information [Line Items] Entity Information [Line Items] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Total liabilities Liabilities Payment for debt settlement Payment for Debt Extinguishment or Debt Prepayment Cost Award Type [Axis] Award Type [Axis] 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Options vested and exercisable - weighted-average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Total stockholders’ equity Balance Balance Stockholders' Equity Attributable to Parent Common stock, issued (in shares) Common Stock, Shares, Issued Acquisition holdback Business Combination, Consideration Holdback , Non-Current Carrying amount as of the balance sheet date pertaining to business combination consideration withheld by the entity and expected to be paid after one year (or the normal operating cycle, if longer), from the balance sheet date. Preferred stock, issued (in shares) Preferred Stock, Shares Issued Preferred Stock Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Restricted cash in other current assets Restricted Cash and Cash Equivalents, Current Designated as Cash Flow Hedges Designated as Hedging Instrument [Member] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Value of common stock issued to settle convertible senior notes Debt Conversion, Converted Instrument, Amount Loss on extinguishment of debt (Loss) gain on extinguishment of debt Gain (Loss) on Extinguishment of Debt Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] NON-CASH INVESTING AND FINANCING ACTIVITIES: Noncash Investing and Financing Items [Abstract] Net change in market value of effective foreign currency forward exchange contracts Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Risk-free interest rate, low end of range (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Operating lease liability, noncurrent Operating Long-term lease obligations Operating Lease, Liability, Noncurrent Total lease payments Finance Lease, Liability, Payment, Due Schedule of unrecognized compensation Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table Text Block] Principal Debt Instrument, Face Amount 2022 Finance Lease, Liability, to be Paid, Year One Stock plan offering period Share-based Compensation Arrangement By Share-based Payment Award, Stock Plan Offering Period Share-based Compensation Arrangement By Share-based Payment Award, Stock Plan Offering Period Expected volatility, high end of range (as a percent) Share-based Compensation Arrangement by 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Concentration Risk [Table] Aggregate Fair Value Estimate of Fair Value Measurement [Member] Zipwhip Zipwhip [Member] Zipwhip 2024 Finance Lease, Liability, to be Paid, Year Three 2025 Finance Lease, Liability, to be Paid, Year Four Non-cash reduction to the right-of-use asset Leases, Right-Of-Use Asset, Amortization Leases, Right-Of-Use Asset, Amortization Deductions against reserve SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Non-amortizable intangible assets: Indefinite-lived Intangible Assets (Excluding Goodwill) Proceeds from exercises of stock options and shares issued in ESPP Proceeds from Stock Options Exercised Schedule of the sales credit reserve Sales Credit Reserve [Table Text Block] Tabular disclosure of the sales credit reserve. 2023 Finance Lease, Liability, to be Paid, Year Two Vesting of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Forfeited and cancelled (in dollars per share) Share-based 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Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. 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Convertible senior notes Convertible Senior Notes [Member] Convertible Senior Notes Scenario [Domain] Scenario [Domain] Schedule of goodwill balance Schedule of Goodwill [Table Text Block] Organization and Description of Business Nature of Operations [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of interest expense recognized related to the Notes Schedule Of Interest On Convertible Debt [Table Text Block] Tabular disclosure of the components of interest expense recognized related to convertible debt instruments. Developed technology Developed Technology Rights [Member] Operating lease cost Operating Lease, Cost Data center equipment Computer Equipment [Member] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Schedule of reserved shares of common stock for issuance Common Stock, Capital Shares Reserved for Future Issuance [Table Text Block] Tabular disclosure of reserved shares of common stock, on an as-if converted basis. Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Unamortized discount Debt Instrument, Unamortized Discount Software Software Not Including Software Development Costs [Member] Represents information pertaining to software other than software development costs. Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Notes Payable Long-term Debt [Text Block] Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]