SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Customer [Domain] Customer [Domain] 2023 Lessee, Operating and Finance Lease, Liability, to be Paid, Year One Lessee, Operating and Finance Lease, Liability, to be Paid, Year One Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Leasehold improvements Leasehold Improvements [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Net income Net income Net Income (Loss) Attributable to Parent Buyer One Buyer One [Member] Buyer One Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Operating lease, sublease area Operating Lease, Sublease Area Operating Lease, Sublease Area Marketable securities Debt Securities, Available-for-sale, Current Preferred stock shares outstanding Preferred Stock, Shares Outstanding Accrued compensation Employee-related Liabilities, Current Income Statement Location [Axis] Income Statement Location [Axis] 2024 Contractual Obligation, to be Paid, Year Two Security Exchange Name Security Exchange Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code EMEA EMEA [Member] Equity investment Equity Method Investments, Fair Value Disclosure Canceled/Forfeited (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Discount from market price, purchase date Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date Options canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Other assets, non-current Other Assets, Noncurrent 2022 (for remaining 9 months) Contractual Obligation, to be Paid, Remainder of Fiscal Year 2024 Lessee, Operating and Finance Lease, Liability, to be Paid, Year Two Lessee, Operating and Finance Lease, Liability, to be Paid, Year Two Gross Unrealized Gain (Loss) Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax Retirement Benefits [Abstract] NET DECREASE IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Entity File Number Entity File Number Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Debt Securities, Available-for-sale Debt Securities, Available-for-sale [Table Text Block] Certificates of deposit Certificates of Deposit [Member] Amount withheld for employee stock purchase plan Share-based Compensation Arrangement by Share-based Payment Award, Amount Withheld For Employee Stock Purchase Plan Share-based Compensation Arrangement by Share-based Payment Award, Amount Withheld For Employee Stock Purchase Plan Subsequent Event Type [Domain] Subsequent Event Type [Domain] Organization, Consolidation and Presentation of Financial Statements [Abstract] Total excludable from net income per share attributable to common stockholders – diluted Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Operating leases Operating Lease, Weighted Average Discount Rate, Percent Technology and development Research and Development Expense [Member] Subsequent Events [Abstract] Granted (in 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 Property, equipment and software, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Award Type [Domain] Award Type [Domain] Credit Facility [Domain] Credit Facility [Domain] ASSETS Assets [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Other liabilities, non-current Increase (Decrease) in Other Noncurrent Liabilities Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Cash equivalents Cash Equivalents [Member] Concentration risk, percentage Concentration Risk, Percentage Preferred stock, $0.0001 par value per share, 10,000,000 shares authorized as of March 31, 2022 and December 31, 2021; No shares issued and outstanding as of March 31, 2022 and December 31, 2021 Preferred Stock, Value, Issued Beginning balance (in shares) Ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Retained Earnings Retained Earnings [Member] Debt Instrument [Axis] Debt Instrument [Axis] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Capitalized software costs included in accounts payable and accrued expenses Capital Expenditures Incurred but Not yet Paid Operating lease right-of-use assets obtained in exchange for new lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Commitments and Contingencies Disclosure [Abstract] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Basic (in usd per share) Net income per share attributable to common stockholders – basic: (in usd per share) Earnings Per Share, Basic U.S. Treasury and government debt securities US Treasury and Government [Member] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Three Document Information [Line Items] Document Information [Line Items] Sublease Income Sublease Income Unvested beginning balance (in shares) Unvested ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Silicon Valley Bank Silicon Valley Bank [Member] Silicon Valley Bank Commercial paper Commercial Paper [Member] Number of shares authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Other Other Noncash Income (Expense) Depreciation and amortization Other Depreciation and Amortization Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Total Financial Assets Assets, Fair Value Disclosure Level I Fair Value, Inputs, Level 1 [Member] CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Income Tax Disclosure [Abstract] Internal-use software Software Development [Member] Entity Small Business Entity Small Business Operating leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] Weighted average shares outstanding – diluted Incremental Common Shares Attributable to Employee Stock Purchase Plan Incremental Common Shares Attributable to Employee Stock Purchase Plan TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity Accrued and other current liabilities Other Accrued Liabilities, Current Options exercised (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Additional paid-in capital Additional Paid in Capital Concentration Risk [Line Items] Concentration Risk [Line Items] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Accounts payable Increase (Decrease) in Accounts Payable Schedule of Earnings per Share, Diluted, by Common Class, Including Two Class Method Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block] Net Income Per Share Attributable to Common Stockholders Earnings Per Share [Text Block] Repurchase of treasury stock, at cost Treasury Stock, Value, Acquired, Cost Method Operating expenses: Operating Expenses [Abstract] Entity Interactive Data Current Entity Interactive Data Current Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Gross profit Gross Profit 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Preferred stock shares authorized Preferred Stock, Shares Authorized Thereafter Lessee, Operating and Finance Lease, Liability, to be Paid, After Year Four Lessee, Operating and Finance Lease, Liability, to be Paid, After Year Four Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Address, State or Province Entity Address, State or Province One Publisher One Publisher [Member] One Publisher Leases Lessee, Finance Leases [Text Block] Deferred income tax asset Deferred Income Tax Assets, Net Current Liabilities Liabilities, Current [Abstract] Capitalized software development costs Payments to Develop Software Operating lease liabilities Increase (Decrease) in Operating Lease Liability General and administration General and Administrative Expense Revision of Prior Period [Axis] Revision of Prior Period [Axis] Loan and Security Agreement Debt Disclosure [Text Block] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Vested (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Level III Fair Value, Inputs, Level 3 [Member] Less: accumulated depreciation and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Accounting Policies [Abstract] Weighted average remaining contractual term (years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Total future minimum commitments, net Contractual Obligation Payments for offering costs Payments of Stock Issuance Costs Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Total Total Operating and Finance Leases [Abstract] Total Operating and Finance Leases Total present value of lease liabilities Operating Lease, Liability Effective income tax rate benefit Effective Income Tax Rate Reconciliation, Deduction, Other, Percent Document Transition Report Document Transition Report Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Irrevocable Letters of Credit due July 2028 Irrevocable Letters of Credit due July 2028 [Member] Irrevocable Letters of Credit due July 2028 Common stock, par value $0.0001 per share; 1,000,000,000 Class A shares authorized as of March 31, 2022 and December 31, 2021; 41,014,591 and 40,695,140 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively; 1,000,000,000 Class B shares authorized as of March 31, 2022 and December 31, 2021; 10,996,149 and 11,159,609 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively. Common Stock, Value, Issued Finance leases Finance Lease, Weighted Average Discount Rate, Percent Total other income (expense), net Nonoperating Income (Expense) Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unvested beginning balance (in usd per share) Unvested ending balance (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Customer Concentration Risk Customer Concentration Risk [Member] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Commitments and contingencies (Note 7) Commitments and Contingencies Subsequent Event [Table] Subsequent Event [Table] Leases Lessee, Operating Leases [Text Block] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Emerging Growth Company Entity Emerging Growth Company Finance lease cost - amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization 2022 (Remaining 9 months) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Other Commitments [Table] Other Commitments [Table] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Cover [Abstract] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] 2025 Lessee, Operating and Finance Lease, Liability, to be Paid, Year Three Lessee, Operating and Finance Lease, Liability, to be Paid, Year Three Class of Stock [Axis] Class of Stock [Axis] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Treasury stock shares Treasury Stock, Shares Contractual Obligations Contractual Obligation, Fiscal Year Maturity [Abstract] Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Network hardware, computer equipment and software Technology Equipment [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year For Lessee, Operating Lease, Liability, to be Paid, after Year For Financial Instrument [Axis] Financial Instrument [Axis] Accrued liabilities Accrued liabilities Accrued Liabilities, Current Revenue Revenue from Contract with Customer, Excluding Assessed Tax Less: imputed interest Finance Lease, Liability, Undiscounted Excess Amount Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Capitalized computer software additions Capitalized Computer Software, Additions Share-based Payment Arrangement, Option Options to purchase common stock Share-based Payment Arrangement, Option [Member] Document Information [Table] Document Information [Table] Equity [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Document Quarterly Report Document Quarterly Report Common Stock Common Stock [Member] Segment Information Segment Reporting Disclosure [Text Block] Operating income Operating Income (Loss) Defined contribution plan, employer discretionary contribution amount Defined Contribution Plan, Employer Discretionary Contribution Amount Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Operating lease liabilities, current Operating Lease, Liability, Current 2026 Lessee, Operating and Finance Lease, Liability, to be Paid, Year Four Lessee, Operating and Finance Lease, Liability, to be Paid, Year Four Revision of Prior Period, Change in Accounting Principle, Adjustment Revision of Prior Period, Change in Accounting Principle, Adjustment [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Document Fiscal Year Focus Document Fiscal Year Focus Total stock-based compensation, net of tax effect Share-based Payment Arrangement, Expense, Net Share-based Payment Arrangement, Expense, Net Additional Paid-In Capital Additional Paid-in Capital [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Previously Reported Previously Reported [Member] Treasury Stock Treasury Stock [Member] Accrued expenses Increase (Decrease) in Accrued Liabilities Irrevocable Letters of Credit due April 2025 Irrevocable Letters of Credit due April 2025 [Member] Irrevocable Letters of Credit due April 2025 Accounting Standards Update and Change in Accounting Principle Accounting Standards Update and Change in Accounting Principle [Table Text Block] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Irrevocable Letters of Credit due June 2022 Irrevocable Letters of Credit due June 2022 [Member] Irrevocable Letters of Credit due June 2022 TOTAL LIABILITIES Liabilities Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Award Type [Axis] Award Type [Axis] Options granted (in usd 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] Aggregate intrinsic value, awards outstanding 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 Beginning balance Ending balance Stockholders' Equity Attributable to Parent Annual lease payments Operating Lease, Annual Lease Payment Operating Lease, Annual Lease Payment Common stock shares issued Common Stock, Shares, Issued Preferred stock shares issued Preferred Stock, Shares Issued Aggregate intrinsic value, vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Entity Address, City or Town Entity Address, City or Town Payments to acquire treasury stock Payments for Repurchase of Common Stock Stockholders' Equity Stockholders' Equity Attributable to Parent [Abstract] SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING INFORMATION: Noncash Investing and Financing Items [Abstract] Operating lease liabilities, non-current Operating Lease, Liability, Noncurrent Total minimum lease payments Finance Lease, Liability, Payment, Due Measurement Frequency [Domain] Measurement Frequency [Domain] 2023 Finance Lease, Liability, to be Paid, Year One Retained earnings Retained Earnings (Accumulated Deficit) Operating lease term Lessee, Operating Lease, Term of Contract Unvested restricted stock units Restricted Stock Units (RSUs) [Member] Line of credit facility, unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Statement of Stockholders' Equity [Abstract] Issuance of common stock related to employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Revision of Prior Period [Domain] Revision of Prior Period [Domain] Entity Filer Category Entity Filer Category Total present value of lease liabilities Finance Lease, Liability Income Statement [Abstract] Concentration Risk [Table] Concentration Risk [Table] Principal payments on finance lease obligations Payments for Cancelation of Stock Options Payments for Cancelation of Stock Options Non-cash operating lease expense Non-cash Lease Expense Non-cash Lease Expense Entity Registrant Name Entity Registrant Name 2025 Finance Lease, Liability, to be Paid, Year Three 2026 Finance Lease, Liability, to be Paid, Year Four Proceeds from exercise of stock options Proceeds from Stock Options Exercised Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] 2024 Finance Lease, Liability, to be Paid, Year Two Options canceled (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Provision for income taxes Income Tax Expense (Benefit) Accounts receivable - net Accounts Receivable, after Allowance for Credit Loss, Current Amendment Flag Amendment Flag APAC Asia Pacific [Member] Equity Components [Axis] Equity Components [Axis] Entity Tax Identification Number Entity Tax Identification Number Fair Value Disclosures [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Document Fiscal Period Focus Document Fiscal Period Focus Total Current Assets Assets, Current Sales and marketing Selling and Marketing Expense [Member] Thereafter Finance Lease, Liability, to be Paid, after Year Four Finance Lease, Liability, to be Paid, after Year Four Total minimum lease payments Lessee, Operating Lease, Liability, to be Paid Accounts Receivable Accounts Receivable [Member] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Canceled/Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Non-current assets Other Assets, Fair Value Disclosure 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] Statement of Financial Position [Abstract] Debt instrument, covenant, quick ratio, minimum Debt Instrument, Covenant, Quick Ratio, Minimum Debt Instrument, Covenant, Quick Ratio, Minimum Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Line of credit facility, borrowing capacity, percentage of eligible accounts receivable, net, Line Of Credit Facility, Borrowing Capacity, Percentage Of Eligible Accounts Receivable, Net, Line Of Credit Facility, Borrowing Capacity, Percentage Of Eligible Accounts Receivable, Net, Preferred stock par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Share-based payment arrangement, nonvested award, excluding option, cost not yet recognized, amount Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Equity Component [Domain] Equity Component [Domain] Buyer Two Buyer Two [Member] Buyer Two Sales and marketing Selling and Marketing Expense 2023 Lessee, Operating Lease, Liability, to be Paid, Year One Statement [Line Items] Statement [Line Items] Tax benefit from stock-based compensation Share-based Payment Arrangement, Tax Benefit Share-based Payment Arrangement, Tax Benefit Property, equipment and software - net Property, equipment and software - net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Weighted-Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Marketable securities, fair value Debt Securities, Available-for-sale 2026 Lessee, Operating Lease, Liability, to be Paid, Year Four Total present value of lease liabilities Operating and Finance Lease, Liability Operating and Finance Lease, Liability Debt Disclosure [Abstract] Options to purchase common stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options Incremental Common Shares Attributable to Dilutive Effect of Call Options 2023 Contractual Obligation, to be Paid, Year One Disclosure of Share-based Compensation Arrangements by Share-based Payment Award Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Purchases of marketable securities Payments to Acquire Marketable Securities Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Level II Fair Value, Inputs, Level 2 [Member] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Segment Reporting [Abstract] Finance lease term Lessee, Finance Lease, Term of Contract Customer [Axis] Customer [Axis] Finance lease cost - interest on lease liabilities Finance Lease, Interest Expense 401(k) Plan Retirement Benefits [Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Share-based Payment Arrangement, Expensed and Capitalized, Amount Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Finance leases Finance Lease, Liability, Payment, Due [Abstract] Stock-based compensation capitalized as internal use software costs Stock-Based Compensation Capitalized As Internal Use Software Costs Stock-Based Compensation Capitalized As Internal Use Software Costs Title of 12(b) Security Title of 12(b) Security TOTAL ASSETS Assets Common stock shares authorized Common Stock, Shares Authorized Property and equipment included in accounts payable and accrued expenses Property And Equipment Included In Accounts Payable And Accrued Expenses Property And Equipment Included In Accounts Payable And Accrued Expenses Geographical [Domain] Geographical [Domain] Net income attributable to common stockholders - diluted Net Income (Loss) Available to Common Stockholders, Diluted Document Type Document Type Technology and development Research and Development Expense Balance Sheet Components Supplemental Balance Sheet Disclosures [Text Block] Debt instrument, interest rate Debt Instrument, Interest Rate, Stated Percentage Rest of the world Rest Of The World [Member] Rest Of The World Revolving Credit Facility Revolving Credit Facility [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Net cash provided by operating activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] 2025 Contractual Obligation, to be Paid, Year Three Furniture and fixtures Furniture and Fixtures [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Lease, Cost Lease, Cost [Table Text Block] Subsequent Event [Line Items] Subsequent Event [Line Items] Geographical [Axis] Geographical [Axis] Weighted-average shares used to compute net income per share attributable to common stockholders: Earnings Per Share, Basic, Other Disclosures [Abstract] Basic (in shares) Weighted average common shares outstanding – basic Weighted Average Number of Shares Outstanding, Basic Diluted (in usd per share) Net income per share attributable to common stockholders – diluted (in usd per share) Earnings Per Share, Diluted Contractual Obligation, Fiscal Year Maturity Contractual Obligation, Fiscal Year Maturity [Table Text Block] Income taxes paid Income Taxes Paid, Net Subsequent Events Subsequent Events [Text Block] Schedule of Earnings per Share, Basic, by Common Class, Including Two Class Method Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Statement of Other Comprehensive Income [Abstract] #REF! Treasury Stock, Value Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Deferred tax liability Deferred Income Tax Liabilities, Net Finance Lease, Liability, Fiscal Year Maturity Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Accounts payable Total accounts payable Accounts Payable, Current Concentration Risk Type [Axis] Concentration Risk Type [Axis] Depreciation and amortization Depreciation, Depletion and Amortization Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Common stock shares outstanding Common Stock, Shares, Outstanding Financial Instruments [Domain] Financial Instruments [Domain] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Current Cost of revenue Cost of Goods and Services Sold 2022 (Remaining 9 months) Lessee, Operating and Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Lessee, Operating and Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Document Period End Date Document Period End Date Issuance of common stock related to RSU vesting (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Common Class B Common Class B [Member] Entity Central Index Key Entity Central Index Key Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Unrealized loss on marketable securities, net of tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Number of Shares Underlying Outstanding Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Less: imputed interest Lessee, Operating and Finance Lease, Liability, Undiscounted Excess Amount Lessee, Operating and Finance Lease, Liability, Undiscounted Excess Amount Total lease cost Lease, Cost Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Total minimum lease payments Lessee, Operating and Finance Lease, Liability, to be Paid Lessee, Operating and Finance Lease, Liability, to be Paid Income Statement Location [Domain] Income Statement Location [Domain] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Total operating expenses Operating Expenses Other liabilities, non-current Other Liabilities, Noncurrent Lender Name [Axis] Lender Name [Axis] Repurchase of treasury stock, at cost (in shares) Treasury Stock, Shares, Acquired Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Trading Symbol Trading Symbol Net income per share attributable to common stockholders: Earnings Per Share [Abstract] Unrealized gain on equity investment Equity Securities, FV-NI, Unrealized Gain (Loss) Line of Credit Facility [Table] Line of Credit Facility [Table] Beginning balance (in usd per share) Ending balance (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Other Commitments [Line Items] Other Commitments [Line Items] Trade payables Accounts Payable, Other, Current Stock-based compensation Total stock-based compensation Share-based Payment Arrangement, Expense Weighted average remaining contractual term vested (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Entity Current Reporting Status Entity Current Reporting Status Effective income tax rate reconciliation, percent Effective Income Tax Rate Reconciliation, Percent Accretion of discount on marketable securities Accretion (Amortization) of Discounts and Premiums, Investments Proceeds from maturities of marketable securities Proceeds from Sale and Maturity of Marketable Securities Common Class A Common Class A [Member] CASH AND CASH EQUIVALENTS - Beginning of period CASH AND CASH EQUIVALENTS - End of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents United States UNITED STATES Common stock par value (in usd per share) Common Stock, Par or Stated Value Per Share Current Assets Assets, Current [Abstract] Common stock reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Leases [Abstract] Cash and cash equivalents, fair value Cash and Cash Equivalents, Fair Value Disclosure Entity Address, Postal Zip Code Entity Address, Postal Zip Code Schedule of Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Annual payment increase percentage Operating Lease, Annual Payment, Annual Increase, Percentage Operating Lease, Annual Payment, Annual Increase, Percentage Exercise of stock options (in shares) Options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Diluted (in shares) Weighted average shares outstanding – diluted Weighted Average Number of Shares Outstanding, Diluted Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Amortization Amortization Fair Value, Recurring Fair Value, Recurring [Member] Income Taxes Income Tax Disclosure [Text Block] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Stockholders’ Equity and Stock Option Plans Stockholders' Equity Note Disclosure [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] Line of credit facility, borrowing capacity, unused capacity fee, closing balance threshold Line of Credit Facility, Borrowing Capacity, Unused Capacity Fee, Closing Balance Threshold Line of Credit Facility, Borrowing Capacity, Unused Capacity Fee, Closing Balance Threshold Statement of Cash Flows [Abstract] Class of Stock [Line Items] Class of Stock [Line Items] Credit Facility [Axis] Credit Facility [Axis] Other comprehensive loss: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Entity Address, Address Line One Entity Address, Address Line One Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Entity Address, Address Line Two Entity Address, Address Line Two Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Vested (in 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 General and administrative General and Administrative Expense [Member] Entity Shell Company Entity Shell Company Total Current Liabilities Liabilities, Current ESPP Employee Stock [Member] Class of Stock [Domain] Class of Stock [Domain] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Payable to publishers Accounts Payable, Trade, Current Money market funds Money Market Funds [Member] Percentage of outstanding stock maximum Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum Current Fiscal Year End Date Current Fiscal Year End Date Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2022 (Remaining 9 months) Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Total Long-Lived Assets Statement [Table] Statement [Table] Adoption of ASC 842 New Accounting Pronouncements, Policy [Policy Text Block] Subsequent Event Subsequent Event [Member] Goodwill Goodwill Restricted stock (in shares) Incremental Common Shares Attributable to Restricted Stock Incremental Common Shares Attributable to Restricted Stock Cost of revenue Cost of Sales [Member] Organization and Description of Business Nature of Operations [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Operating lease cost Operating Lease, Cost Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Defined contribution plan, maximum annual contributions per employee, percent Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Deferred income taxes Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]