April 2024 Repurchase Program April 2024 Repurchase Program [Member] April 2024 Repurchase Program March 2022 Plan March 2022 Plan [Member] March 2022 Plan Number of options approved for grant by Board of Directors (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Options Approved Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Options Approved Statistical Measurement [Domain] Statistical Measurement [Domain] Reserve for Refunds to Members; Merchant Payables Reserve For Subscriber Refunds [Policy Text Block] Reserve for Subscriber Refunds, Policy [Policy Text Block] Award Timing Predetermined Award Timing Predetermined [Flag] Related Party Transaction [Axis] Related Party Transaction [Axis] Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Impairment of Property and Equipment Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Leases [Abstract] Recently Adopted Accounting Pronouncements and Recent Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Net income per share - basic (in dollars per share) Net income (loss) per share —basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Related Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable Increase (Decrease) in Accounts Payable, Trade Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Worldwide changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Stock, Class of Stock [Table] Stock, 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Equipment [Table Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Current assets: Current assets: Assets, Current [Abstract] Options forfeited (in shares) Options forfeited and canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Total liabilities and stockholders’ equity (deficit) Liabilities and Equity Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Certain Risks and Uncertainties Concentration Risk, Credit Risk, Policy [Policy Text Block] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] State and Local State and Local Jurisdiction [Member] Cover [Abstract] Maximum Maximum [Member] Estimated Life (Years) Finite-Lived Intangible Asset, Useful Life Net income attributable to non-controlling interest Net Income attributable to non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Unrecognized tax benefits, interest on income taxes accrued Unrecognized Tax Benefits, Interest on Income Taxes Accrued Schedule of Lease Liability Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Operating lease liabilities Deferred Tax Assets, Lease Liability Deferred Tax Assets, Lease Liability Treasury Stock Treasury Stock, Common [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Total operating lease liabilities Present value of operating lease liabilities Operating Lease, Liability Retirement Benefits [Abstract] Retirement Benefits [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Liabilities: Liabilities [Abstract] Schedule of Changes in the Deferred Tax Assets Valuation Allowance Summary of Valuation Allowance [Table Text Block] Acquisitions Business Combination [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Framework Agreement Framework Agreement [Member] Framework Agreement Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Other long-term liabilities Other Liabilities, Noncurrent Deferred revenue Increase (Decrease) in Deferred Revenue Goodwill impairments Goodwill, Impairment Loss Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Intangible Assets, Excluding Goodwill [Roll Forward] Intangible Assets, Excluding Goodwill [Roll Forward] Intangible Assets, Excluding Goodwill Schedule of Cash Paid for Income Taxes (Net of Refunds) Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Remaining lease term (in years) Lessee, Operating Lease, Remaining Lease Term Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating loss carryforwards, unutilized Operating Loss Carryforwards, Unutilized Operating Loss Carryforwards, Unutilized October 2024 Repurchase Program October 2024 Repurchase Program [Member] October 2024 Repurchase Program Schedule of Prepaid Expenses and Other Schedule of Other Current Assets [Table Text Block] Exercise Price Range [Axis] Exercise Price Range [Axis] Name Measure Name Net income attributable to Travelzoo operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Schedule of Income before Income Tax Expense by Jurisdiction Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Prepaid Expense and Other Assets, Current [Abstract] Prepaid Expense and Other Assets, Current [Abstract] Long-term tax liabilities Accrued Income Taxes, Noncurrent Mr. Ralph Bartel Mr. Ralph Bartel [Member] Mr. Ralph Bartel U.S. Income (Loss) from Continuing Operations before Income Taxes, Domestic Operating lease liabilities Operating Lease, Liability, Current Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Equity, Attributable to Noncontrolling Interest [Roll Forward] Class of Stock Class of Stock [Line Items] Capitalized internal-use software and website development Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Award Type [Axis] Award Type [Axis] Foregin Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Total assets Assets Key Employees Key Employees [Member] Key Employees Operating loss carryforward, expiring Operating Loss Carryforwards, Expiring Operating Loss Carryforwards, Expiring Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Business Combinations Business Combination [Policy Text Block] Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Geographical [Domain] Geographical [Domain] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Taxes Income Tax, Policy [Policy Text Block] Deposits Deposits Assets, Current Entity Address, City or Town Entity Address, City or Town Components of Deferred Tax Assets and Liabilities [Abstract] Components of Deferred Tax Assets and Liabilities [Abstract] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Concentration Risk Type [Axis] Concentration Risk Type [Axis] Total deferred tax assets net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Entity Emerging Growth Company Entity Emerging Growth Company Impairment of software Impairment, Long-Lived Asset, Held-for-Use Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Stock Repurchase Program Stock Repurchased of Outstanding Common Stock [Text Block] Stock Repurchased of Outstanding Common Stock [Text Block] Right-of-use assets obtained in exchange for lease obligations—operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Options outstanding (in shares) Options outstanding, beginning (in shares) Options outstanding, ending (in shares) Options Outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Document Financial Statement Error Correction Flag Document Financial Statement Error Correction [Flag] Sales and marketing Sales And Marketing Expense, Adjusted Sales And Marketing Expense, Adjusted State taxes, net of federal income tax benefit State and Local Income Taxes, Net of Federal Income Tax Effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Accrued advertising expense Accrued Advertising, Current Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Charged (Credited) to other account SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account Allowance for credit losses SEC Schedule, 12-09, Allowance, Credit Loss [Member] Schedule of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Chief Executive Officer Chief Executive Officer [Member] Plan Name [Axis] Plan Name [Axis] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] PEO PEO [Member] Membership Fees Membership Fees [Member] Membership Fees Current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Tax Paid, by Individual Jurisdiction [Line Items] Income Tax Paid, by Individual Jurisdiction [Line Items] Increase in valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Income tax payable Accrued Income Taxes, Current United States UNITED STATES Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Nature of Operation, Product Information, Concentration of Risk [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Historical volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Retained Earnings Retained Earnings [Member] Provision for accounts receivable and refund reserves Provision for Other Losses Prepaid expenses and other Total prepaid expenses and other Prepaid Expense and Other Assets, Current Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Schedule of Accrued Expenses Schedule of Accrued Liabilities [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash, cash equivalents and restricted cash at beginning of year Cash, cash equivalents and restricted cash at end of year Total cash, cash equivalents and restricted cash in the consolidated statements of cash flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax expense Total income tax expense Income Tax Expense (Benefit) Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Schedule of Lease Assets and Liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Audit Information [Abstract] Audit Information Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Intangible assets, net Intangible assets beginning Intangible assets ending Intangible Assets, Net (Excluding Goodwill) Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Property, plant and equipment, gross Property, Plant and Equipment, Gross Net income Net income Net income—Travelzoo Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Business Combination [Table] Business Combination [Table] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Secret Escape U.S. Metaverse Travel Experiences [Member] Metaverse Travel Experiences Employer discretionary contribution amount Defined Contribution Plan, Employer Discretionary Contribution Amount Income Tax Paid, by Individual Jurisdiction [Table] Income Tax Paid, by Individual Jurisdiction [Table] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Federal Income Tax Paid, Federal, after Refund Received All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Accrued expenses and other Total accrued expenses and other Accrued Liabilities, Current Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Total deferred tax liabilities Deferred Tax Liabilities, Net Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Net operating loss and credit carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Foreign Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Outstanding and expected to vest thereafter (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares Number of key employees Share-based Compensation Arrangement By Share-based Payment Award, Options, Number Of Key Employees Share-based Compensation Arrangement By Share-based Payment Award, Options, Number Of Key Employees SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Term (in years) Debt Instrument, Term Related Party Transactions [Abstract] Related Party Transactions [Abstract] Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Retirement of treasury stock Treasury Stock, Retired, Cost Method, Amount Estimated useful lives (in years) Property, Plant and Equipment, Useful Life Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Subsequent Event Subsequent Event [Member] Schedule of Weighted-Average Assumptions used in Black-Scholes Option Pricing Model Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Total lease cost Lease, Cost Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Goodwill Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Lease Cost Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Employee Options June 2020 Employee Options June Two Thousand Twenty Two [Member] Employee Options June Two Thousand Twenty Two Depreciation expense Depreciation Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Unrecognized Tax Benefits [Roll Forward] Unrecognized Tax Benefits [Roll Forward] Auditor Name Auditor Name State income taxes Deferred Tax Assets, State Taxes Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Tax indemnification Tax Indemnification, Value Tax Indemnification, Value Deferred tax assets: Components of Deferred Tax Assets [Abstract] Basis of Presentation and Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Operating loss carryforwards, valuation allowance Operating Loss Carryforwards, Valuation Allowance Advertising Costs Advertising Cost [Policy Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Weighted-Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Schedule of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Merchant payables Increase (Decrease) In Merchant Payable, Trade Increase (Decrease) In Merchant Payable, Trade Entity Address, State or Province Entity Address, State or Province Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Domain] Deferred Tax Asset Valuation Allowance Deferred Tax Asset [Domain] Total current liabilities Liabilities, Current Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Individual: Individual [Axis] Restricted cash Restricted Cash September 2019 Plan Employee Options September Two Thousand Nineteen [Member] Employee Options September Two Thousand Nineteen Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Other current assets Other Assets, Current Document Annual Report Document Annual Report Additional paid-in capital Additional Paid in Capital, Common Stock Employer matching contribution per employee, amount (up to) Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Maximum annual contribution by employee, percent of eligible earnings (up to) Defined Contribution Plan, Maximum Annual Contribution by Employee, Percent of Eligible Earnings Defined Contribution Plan, Maximum Annual Contribution by Employee, Percent of Eligible Earnings Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Travelzoo Singapore Travelzoo Singapore [Member] Travelzoo Singapore Percentage of equity interest Subsidiary, Ownership Percentage, Noncontrolling Owner Tax Expense (Benefit) / Effective Tax Rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Operating lease cost Operating Lease, Cost Plan Name [Domain] Plan Name [Domain] March 2025 Repurchase Program March 2025 Repurchase Program [Member] March 2025 Repurchase Program Unrecognized compensation expense, period for recognition (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Schedule of Changes in Allowance for Credit Losses and Reserve for Subscriber Refunds Valuation and Qualifying Accounts Disclosure [Table Text Block] Valuation and Qualifying Accounts Disclosure [Table Text Block] Annual membership fee charged Annual Membership Fees Annual Membership Fees Exercise of stock options and taxes paid for net share settlement (in shares) Exercised options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Valuation allowance Deferred Tax Assets, Valuation Allowance Deferred revenue Deferred Tax Assets, Deferred Income Equity [Abstract] Equity [Abstract] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] North America North America [Member] Stock-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Jack's Flight Club JFC Travel Group Co. [Member] JFC Travel Group Co. [Member] Purchase obligation Purchase Obligation Segment Reporting and Significant Customer Information Segment Reporting Disclosure [Text Block] Exercisable and fully vested, aggregate intrinsic value Share Based Compensation Arrangement By Share Based Payment Award Options Vested and Exercisable, Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Vested and Exercisable, Aggregate Intrinsic Value Federal Current Federal Tax Expense (Benefit) Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Ownership [Domain] Ownership [Domain] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Stock repurchased program authorized number of shares (in shares) Share Repurchase Program, Authorized, Number of Shares Amortization of intangible assets with definite lives Amortization expense Amortization of Intangible Assets Operating Leases Lessee, Leases [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Balance at the beginning of the year Balance at end of year SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Deferred tax assets Deferred Income Tax Assets, Net Stock repurchased during period, value Stock Repurchased During Period, Value Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Prepaid income taxes Increase (Decrease) in Income Taxes Receivable Bartel Consulting Agreement Bartel Consulting Agreement [Member] Bartel Consulting Agreement Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Rest of the world Geographical Locations Excluding United States and United Kingdom [Member] Geographical Locations Excluding United States and United Kingdom Reserve for member refunds Reserve For Member Refunds [Member] Reserve For Member Refunds [Member] Allowance for Expected Losses Accounts Receivable [Policy Text Block] State State and Local Income Tax Expense (Benefit), Continuing Operations Foreign income taxed at different rates Statutory rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Advertising and Commerce Advertising [Member] Arrangement Duration Trading Arrangement Duration Deferred revenue Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Valuation Allowance by Deferred Tax Asset [Axis] Valuation Allowance by Deferred Tax Asset [Axis] Europe Europe [Member] US Federal Statutory Tax Rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Subsequent Event Type [Axis] Subsequent Event Type [Axis] Stock-Based Compensation and Stock Options Share-Based Payment Arrangement [Text Block] Fair Value Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Foreign Foreign Income Tax Expense (Benefit), Continuing Operations ASSETS Assets: Assets [Abstract] Proceeds from royalties received Proceeds from Royalties Received Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Employee Benefit Plan Retirement Benefits [Text Block] Business Combination [Line Items] Business Combination [Line Items] Employee Options May 2020 Employee Options May 2020 [Member] Employee Options May 2020 Stockholders’ equity (deficit): Equity, Attributable to Parent [Abstract] Operating lease right-of-use assets Deferred Tax Liabilities, Operating Lease Right-Of-Use Assets Deferred Tax Liabilities, Operating Lease Right-Of-Use Assets Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Vesting percentage (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Outstanding and expected to vest, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Intrinsic Value Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Product development Research and Development Expense Schedule of Outstanding Options Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block] Accumulated Other Comprehensive Loss AOCI AOCI Attributable to Parent [Member] Accounts receivable, net of allowance Accounts Receivable, Allowance for Credit Loss, Current Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Entity Voluntary Filers Entity Voluntary Filers Working capital Working Capital, Current Working Capital, Current Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures [Abstract] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Ownership [Axis] Ownership [Axis] Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Uncertain tax positions Effective Income Tax Rate Reconciliation, Tax Contingency, Interest, Amount Effective Income Tax Rate Reconciliation, Tax Contingency Interest, Amount Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Operating loss carryforwards Operating Loss Carryforwards Worldwide changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Capitalized computer software, amortization Capitalized Computer Software, Amortization Effect of dilutive securities: stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Title and Position [Domain] Title and Position [Domain] Unrecognized stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Share-based compensation options were exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Related Party Transactions Related Party Transaction [Line Items] Operating loss carryforward, indefinite Operating Loss Carryforwards, Indefinite Operating Loss Carryforwards, Indefinite Accrued excise tax for share repurchases Accrued Excise Tax For Share Repurchases Accrued Excise Tax For Share Repurchases Other State and Local Tax Jurisdiction, Other [Member] Deductions — recoveries of amounts previously reserved SEC Schedule, 12-09, Valuation Allowances and Reserves, Increase (Decrease) Adjustment Reportable Segments Reportable Segments [Member] Reportable Segments Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Number of operating segments Number of Operating Segments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Outstanding, weighted-average remaining contractual life Options Outstanding Weighted-Average Remaining Contractual Life Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Deposits and other Deposits Assets, Noncurrent Royalty Agreement Terms Royalty Agreement Terms [Member] Accruals and allowances Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowances and Accrued Liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowances and Accrued Liabilities Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Foreign Deferred Foreign Income Tax Expense (Benefit) Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Total Income Tax Expense (Benefit), Continuing Operations [Abstract] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Amounts reclassified from accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, 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