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be Paid, Year One Class B common stock Class B Common Class B [Member] Shares issued and outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2021 Finance Lease, Liability, to be Paid, Year One 2024 Lessee, Operating Lease, Liability, to be Paid, Year Four Schedule of Fair Value Assets Measured On Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Remaining unamortized stock-based compensation Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Customer [Axis] Customer [Axis] Shares outstanding, beginning of the period (in shares) Shares outstanding, end of the period (in shares) Shares, Outstanding Proceeds from maturities of short-term investments Proceeds from Maturities, Prepayments and Calls of Short-term Investments Income taxes Income Tax, Policy [Policy Text Block] Total operating expenses Operating Expenses Buildings Building [Member] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other non-current liabilities Other Liabilities, Noncurrent Options and restricted stock units and awards canceled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Other Payments for (Proceeds from) Other Investing Activities Class Action Lawsuits Filed in the State of California, San Mateo County Class Action Lawsuits Filed In The State Of California, San Mateo County [Member] Class Action Lawsuits Filed In The State Of California, San Mateo County Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Principal payments 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Financial Instruments [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Stock options assumed (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed Through Business Acquisition Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed Through Business Acquisition Schedule of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Geographical [Axis] Geographical [Axis] Subsequent Events Subsequent Events [Text Block] Tenant improvements Lessee, Operating Lease, Tenant Improvement Reimbursement Lessee, Operating Lease, Tenant Improvement Reimbursement Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table] Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table] HelloSign Inc. HelloSign Inc. [Member] HelloSign Inc. [Member] Short-term investments, amortized cost Debt Securities, Available-for-sale, Amortized Cost Short-term investments, unrealized gain Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Unvested at end of period, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Aggregate Intrinsic Value Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Income Statement Location [Axis] Income Statement Location [Axis] Capitalized Contract Cost [Line Items] Capitalized Contract Cost [Line Items] Assumed stock options in connection with acquisition Stock Issued During Period, Value, Acquisitions Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Cash Cash [Member] Income Statement Location [Domain] Income Statement Location [Domain] 2022 Lessee, Operating Lease, Liability, to be Paid, Year Two Cash flow from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Amortization expense Amortization of Intangible Assets Line of Credit Facility [Table] Line of Credit Facility [Table] Due after three years Available For Sale Securities, Debt Maturities After Three Years, Fair Value Available For Sale Securities, Debt Maturities After Three Years, Fair Value 2023 Lessee, Operating Lease, Liability, to be Paid, Year Three Capitalized Contract Cost [Domain] Capitalized Contract Cost [Domain] Other assets Other Assets, Noncurrent Plan Name [Axis] Plan Name [Axis] Geographic Areas Segment Reporting Disclosure [Text Block] Total cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Concentration Risk [Table] Concentration Risk [Table] Total assets Assets Scenario [Axis] Scenario [Axis] Beginning balance (in shares) Ending balance (in shares) Unvested at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Title of 12(b) Security Title of 12(b) Security Schedule Of Accrued And Other Current Liabilities Schedule of Accrued Liabilities [Table Text Block] Net gains on equity investments Equity Securities, FV-NI, Gain (Loss) Options and restricted stock units and awards granted (in shares) Share-Based Compensation Arrangement By Share-based Payment Award, Decrease In Number of Shares Authorized From Stock Granted Share-Based Compensation Arrangement By Share-based Payment Award, Decrease In Number of Shares Authorized From Stock Granted Finance Lease, Liability, Payment, Due [Abstract] Finance Lease, Liability, Payment, Due [Abstract] Total Finite-Lived Intangible Assets, Net Antidilutive Securities [Axis] Antidilutive Securities [Axis] Cost of revenue Cost of Sales [Member] Chief Executive Officer Chief Executive Officer [Member] Concentrations of credit risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Maturities of Operating Lease Liabilities Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] Vesting [Domain] Vesting [Domain] Other Other Intangible Assets [Member] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Increase in unrecognized tax benefits Unrecognized Tax Benefits, Period Increase (Decrease) Total liabilities Liabilities Other Assets Other Noncurrent Assets [Member] Unamortized stock-based compensation, requisite service period Unamortized stock-based compensation, requisite service period Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Cash in transit for credit and debit card transactions Credit and Debit Card Receivables, at Carrying Value International Non-US [Member] Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Revenue recognized Contract with Customer, Liability, Revenue Recognized Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Level 1 Fair Value, Inputs, Level 1 [Member] Fair value of assumed HelloSign options attributable to pre-combination services Business Combination, Consideration Transferred, Stock Options Assumed Business Combination, Consideration Transferred, Stock Options Assumed Accounts payable Increase (Decrease) in Accounts Payable Restricted Stock Outstanding, Number of Plan shares outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Vested at end of period (in dollars 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Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Change in net unrealized gains (losses) on short-term investments Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Trade and Other Receivables Accounts Receivable And Other Receivable [Member] Accounts Receivable And Other Receivable [Member] Revolving Credit Facility Revolving Credit Facility [Member] Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Lease, remaining lease term Lease, Remaining Lease Term Lease, Remaining Lease Term Research and development Research and Development Expense Votes per share Common 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Attributable to Parent [Member] Personnel agreement, expense recognized Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized Contractual Maturities of Short Term Investments Investments Classified by Contractual Maturity Date [Table Text Block] Operating lease liability, non-current Operating Lease, Liability, Noncurrent 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Four Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Schedule of Cash, Cash Equivalents and Short-Term Investments Cash, Cash Equivalents and Investments [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Use of estimates Use of Estimates, Policy [Policy Text Block] Current assets: Assets, Current [Abstract] Schedule of Finite-Lived Intangible Assets Acquired and Estimated Useful Lives Schedule of Finite-Lived Intangible Assets 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Shares repurchased for tax withholdings on release of restricted stock units and awards Payment, Tax Withholding, Share-based Payment Arrangement Cover [Abstract] Cover [Abstract] Base Rate Base Rate [Member] Stock repurchased and retired during period (in shares) Stock Repurchased and Retired During Period, Shares Accounts payable, accrued and other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Intangible Assets Intangible Assets Disclosure [Text Block] Property and equipment, useful life Property, Plant and Equipment, Useful Life Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Leases Lessee, Operating Leases [Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Class C common stock Common Class 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