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Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Common Stock, LT10 Common Stock, LT10 [Member] Common Stock, LT10 PEO Total Compensation Amount PEO Total Compensation Amount Purchase price as a percentage of common stock (percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Axis] Interest payable Interest Payable, Current Share Repurchase Program [Domain] Share Repurchase Program [Domain] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Common stock Common Stock [Member] Measure: Measure [Axis] Additions based on tax positions related to current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Capitalized software development costs Capitalized Computer Software, Gross Line of Credit Line of Credit [Member] Entity Emerging Growth Company Entity Emerging Growth Company Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Shares withheld from common stock issued to pay employee payroll taxes (in shares) Shares withheld from common stock issued to pay employee payroll taxes (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Entity Central Index Key Entity Central Index Key Scenario [Axis] Scenario [Axis] General and administrative General and Administrative Expense [Member] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Matching Plan 1/20th Share Issuance Matching Plan One Twentieth Issuance [Member] Matching Plan One Twentieth Issuance Schedule of Accrued Expenses and Other Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Finance lease ROU asset (included within Lease right-of-use assets) Finance Lease, Right-of-Use Asset, after Accumulated Amortization PREFERRED STOCK AND STOCKHOLDERS’ EQUITY Equity [Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share GILTI (percent) Effective Income Tax Rate Reconciliation, GILTI, Percent Settlement Assets, Net and Liabilities and Allowance for Expected Credit Losses Settlement Assets And Liabilities And Allowance For Expected Credit Losses [Policy Text Block] Settlement Assets And Liabilities And Allowance For Expected Credit Losses Current portion of long-term debt, net of original issue discount and debt issuance costs Long-Term Debt, Current Maturities 2021 Incentive Plan The 2021 Incentive Plan [Member] The 2021 Incentive Plan Reconciliation of cash and cash equivalents and restricted cash to the Consolidated Balance Sheets: Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Entity Shell Company Entity Shell Company Deferred tax liabilities: Deferred Tax Liabilities, Net [Abstract] Entity Incorporation, State Entity Incorporation, State or Country Code Balance as of January 1 Balance as of December 31 Capitalized Contract Cost, Net Title Trading Arrangement, 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Ending balance Unrecognized Tax Benefits Lease right-of-use assets Right Of Use Assets Right Of Use Assets City Area Code City Area Code Auditor Location Auditor Location Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Total current assets Assets, Current Statement of Cash Flows [Abstract] Noncash investing and financing items: Noncash Investing and Financing Items [Abstract] Preferred stock Preferred Stock [Member] Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Repurchase and retirement of common stock Payments for Repurchase of Common Stock Options exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Document Information Document Information [Line Items] Amortizing term mortgage outstanding balance Long-Term Debt, Excluding Current Maturities Accounts Receivable and Allowance for Expected Credit Losses Receivable [Policy Text Block] Weighted average grant date fair value per share Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Subsequent Event Type [Axis] Subsequent Event Type [Axis] INCOME TAXES Income Tax Disclosure [Text Block] Repurchase and retirement of common stock Stock Repurchased and Retired During Period, Value Matching Plan shares Matching Shares [Member] Matching Shares 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Net loss per share: Earnings Per Share [Abstract] Equity [Abstract] Accumulated deficit Retained Earnings (Accumulated Deficit) Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Repurchase and retirement of common stock (in shares) Repurchase and retirement of common stock (in shares) Stock Repurchased and Retired During Period, Shares Class of Stock [Domain] Class of Stock [Domain] Options cancelled/forfeited/expired (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Related Party Transaction Related Party Transaction [Line Items] Domestic Plan Domestic Plan [Member] Supplemental disclosure of cash flow information: Supplemental Cash Flow Elements [Abstract] General and administrative General and Administrative Expense Deferred tax assets Deferred Income Taxes and Tax Credits Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Operating leases 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Appreciation Rights (SARs) [Member] Depreciation and amortization Depreciation, Depletion and Amortization Other Other Accounts Payable and Accrued Liabilities Gross margin Gross Profit Weighted average remaining lease term (in years): Weighted Average Remaining Lease Term [Abstract] Weighted Average Remaining Lease Term Fair Value as of Grant Date Award Grant Date Fair Value Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization General and Administrative Selling, General and Administrative Expenses, Policy [Policy Text Block] Restricted common stock liability for early stock option exercises Restricted Common Stock Liability For Early Stock Option Exercises, Current Restricted Common Stock Liability For Early Stock Option Exercises, Current FINANCING ARRANGEMENTS Debt Disclosure [Text Block] Geographical [Domain] Geographical [Domain] Amortized during the year Capitalized Contract Cost, Amortization Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Loaned amount Debt Instrument, Face Amount Charitable contributions Deferred Tax Assets, Charitable Contribution Carryforwards Interest expense limitation Deferred Tax Asset, Interest Expense Limitation Deferred Tax Asset, Interest Expense Limitation Entity Address, Postal Zip Code Entity Address, Postal Zip Code Advertising expense Advertising Expense Schedule of Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Title of each class Title of 12(b) Security Common stock issued, value Common Stock, Value, Issued Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Settlement liabilities Increase (Decrease) in Settlement Liabilities Increase (Decrease) in Settlement Liabilities Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Share-Based Payment Arrangement [Abstract] Conversion of stock, notice period (in months) Conversion of Stock, Notice Period Conversion of Stock, Notice Period Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Capitalized Computer Software, Net Capitalized Computer Software, Net [Abstract] Grantee Status [Axis] Grantee Status [Axis] State tax (percent) Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Auditor Name Auditor Name Settlement liabilities Settlement Liabilities, Current Share-based Payment Arrangement, Nonemployee Share-Based Payment Arrangement, Nonemployee [Member] Cancelled/forfeited/expired (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Other Current Assets Other Current Assets [Line Items] Other Current Assets [Line Items] Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Audit Information [Abstract] Audit Information Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Preferred stock, par value $0.0001; 10,000,000 shares of preferred stock authorized as of December 31, 2024 and 2023, respectively; no shares of preferred stock issued and outstanding as of December 31, 2024 and 2023 Preferred Stock, Value, Issued Weighted average stock options Share-Based Payment Arrangement [Member] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Property, plant and equipment useful life (in years) Property, Plant and Equipment, Useful Life Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Total deferred tax liabilities Deferred Tax Liabilities, Gross Basic (in dollars per share) Net loss per share, basic (in dollars per share) Earnings Per Share, Basic Accounts payable Increase (Decrease) in Accounts Payable Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Proceeds from common stock purchased under Matching Plan Proceeds from Stock Plans Operating cash flows from operating leases Operating Lease, Payments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Principal payments of finance leases Financing cash flows from finance leases Finance Lease, Principal Payments Purchases of property and equipment and capitalized software in accounts payable and accrued expenses Capital Expenditures Incurred but Not yet Paid Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Restricted cash included in settlement assets, net Restricted Cash Included In Settlement Assets Restricted Cash Included In Settlement Assets Net loss, basic Net loss, basic Net Income (Loss) Available to Common Stockholders, Basic Property and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Stock, Class of Stock [Table] Stock, Class of Stock [Table] Total current liabilities Liabilities, Current 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] Share-based compensation expense not yet recognized Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Share Repurchase Program [Axis] Share Repurchase Program [Axis] Total assets Assets Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Consideration revenue from vendors Cost of Goods and Services Sold Granted (in shares) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Added during the year Capitalized Contract Cost Amount Capitalized Capitalized Contract Cost Amount Capitalized Income tax receivable Income Taxes Receivable, Current Initial Term Loan Amended 2021 Term Loan Initial Term Loan [Member] Amended 2021 Term Loan Initial Term Loan Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Other liabilities Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Total stock-based compensation Share-Based Payment Arrangement, Expensed and Capitalized, Amount Commitments and contingencies (Note 12) Commitments and Contingencies Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Termination Date Trading Arrangement Termination Date Related Party Transaction [Table] Related Party Transaction [Table] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two Significant Accounting Policies Financing Receivable, Impaired [Line Items] STOCK INCENTIVE PLANS Share-Based Payment Arrangement [Text Block] Common Stock, LT50 LT50 Common Stock Common Stock, LT50 [Member] Common Stock, LT50 Other liabilities Other Liabilities Schedule of Revenue from Geographic Areas Revenue from External Customers by Geographic Areas [Table Text Block] Entity Address, City Entity Address, City or Town Number of operating lease agreements (lease) Lessee, Operating Lease, Number Of Contracts Acquired Lessee, Operating Lease, Number Of Contracts Acquired Cashback rewards offset against outstanding customer receivables Cashback Rewards Offset Against Outstanding Customer Receivables Cashback Rewards Offset Against Outstanding Customer Receivables Net of recoveries Accounts Receivable, Allowance for Credit Loss, Recovery Leases Lessee, Leases [Policy Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Total stock-based compensation expense Total stock-based compensation expense Share-Based Payment Arrangement, Expense Net loss Net loss Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Capitalized commissions Deferred Tax Liabilities, Capitalized Commissions Deferred Tax Liabilities, Capitalized Commissions Settlement assets, net Settlement Assets, Current Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Employer discretionary matching Defined Contribution Plan, Employer Discretionary Contribution Amount Cancelled/forfeited/expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] 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] Foreign Foreign Tax Jurisdiction [Member] Entity File Number Entity File Number Operating lease right-of-use assets Deferred Tax Liabilities, Leasing Arrangements Finance leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Consolidated Entities [Domain] Consolidated Entities [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Income Statement [Abstract] Entity Address, Street Entity Address, Address Line One Federal Current Federal Tax Expense (Benefit) Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Weighted average shares of common stock used to compute net loss per share: Denominator Weighted Average Number of Shares Outstanding, Basic [Abstract] Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Name Forgone Recovery, Individual Name Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Operating lease (in years) Operating Lease, Weighted Average Remaining Lease Term Document Period End Date Document Period End Date Less: lease liabilities, current Finance Lease, Liability, Current Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total future lease payments Lessee, Operating Lease, Liability, to be Paid Matching shares Matching Plan [Member] Matching Plan Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] Line of Credit Facility Line of Credit Facility [Line Items] SIGNIFICANT BALANCE SHEET COMPONENTS Supplemental Balance Sheet Disclosures [Text Block] Reductions based on tax positions of prior year Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Issuance of common stock in connection with restricted stock units vesting Stock Issued During Period Shares Restricted Stock Award Units Vesting, Value Stock Issued During Period Shares Restricted Stock Award Units Vesting, Value Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Other current assets Increase (Decrease) in Other Current Assets 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cost of revenue, net Cost of Revenue Sales and Marketing Sales And Marketing [Policy Text Block] Sales And Marketing Adjustment to Compensation: Adjustment to Compensation [Axis] Share Repurchases Share Repurchases, Policy [Policy Text Block] Share Repurchases, Policy Reclassification Presentation Reclassification, Comparability Adjustment [Policy Text Block] Document Transition Report Document Transition Report Employer share match rate (percent) Share-Based Compensation Arrangement By Share-Based Payment Award, Percentage Of Shares Matched By Employer Share-Based Compensation Arrangement By Share-Based Payment Award, Percentage Of Shares Matched By Employer Schedule of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status Accumulated deficit Retained Earnings [Member] Amortization of original issue discount and debt issuance costs Amortization of Debt Issuance Costs Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Related Party [Axis] Related and Nonrelated Parties [Axis] Basic (in shares) Weighted-average shares of common stock used to compute net loss per share, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Lease liabilities, non-current Lease Liability, Non-Current Lease Liability, Non-Current Capitalized software, net Capitalized software, net Capitalized Computer Software, Net Document Information [Table] Document Information [Table] Restricted stock units Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Professional fees Accrued Professional Fees, Current Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Construction in progress Construction in Progress [Member] Schedule of Components of Provision for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Entity Filer Category Entity Filer Category The 2009 Option Plan The 2009 Option Plan [Member] The 2009 Option Plan Grant date fair value of options vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Change in Deferred Contract Acquisition Costs Change In Deferred Contract Acquisition Costs Roll Forward [Abstract] Change In Deferred Contract Acquisition Costs Roll Forward Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Company Selected Measure Name Company Selected Measure Name