0001001 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - BASIS OF PRESENTATION AND BUSINESS link:presentationLink link:calculationLink link:definitionLink 2402401 - Disclosure - BASIS OF PRESENTATION AND BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 2103102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2204201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 2108103 - Disclosure - FINTECH MERGER AND STELLA POINT ACQUISITION link:presentationLink link:calculationLink link:definitionLink 2309302 - Disclosure - FINTECH MERGER AND STELLA POINT ACQUISITION (Tables) link:presentationLink link:calculationLink link:definitionLink 2410404 - Disclosure - FINTECH MERGER AND STELLA POINT ACQUISITION, Net Cash Proceeds Received in Reverse Recapitalization (Details) link:presentationLink link:calculationLink link:definitionLink 2411405 - Disclosure - FINTECH MERGER AND STELLA POINT ACQUISITION, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2112104 - Disclosure - REVENUE RECOGNITION STANDARD link:presentationLink link:calculationLink link:definitionLink 2313303 - Disclosure - REVENUE RECOGNITION STANDARD (Tables) link:presentationLink link:calculationLink link:definitionLink 2414406 - Disclosure - REVENUE RECOGNITION STANDARD, Revenues from Contract with Customers (Details) link:presentationLink link:calculationLink link:definitionLink 2415407 - Disclosure - REVENUE RECOGNITION STANDARD, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2116105 - Disclosure - PREPAID EXPENSES AND OTHER ASSETS link:presentationLink link:calculationLink link:definitionLink 2317304 - Disclosure - PREPAID EXPENSES AND OTHER ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 2418408 - Disclosure - PREPAID EXPENSES AND OTHER ASSETS, Prepaid Expenses and Other Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2419409 - Disclosure - PREPAID EXPENSES AND OTHER ASSETS, Notes Receivable from Agents (Details) link:presentationLink link:calculationLink link:definitionLink 2420410 - Disclosure - PREPAID EXPENSES AND OTHER ASSETS, Maturities of Notes Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 2421411 - Disclosure - PREPAID EXPENSES AND OTHER ASSETS, Narritive (Details) link:presentationLink link:calculationLink link:definitionLink 2122106 - Disclosure - PROPERTY AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 2323305 - Disclosure - PROPERTY AND EQUIPMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 2424412 - Disclosure - PROPERTY AND EQUIPMENT, Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 2425413 - Disclosure - PROPERTY AND EQUIPMENT, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2126107 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 2327306 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 2428414 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, Gross Carrying Amounts and Accumulated Amortization for Goodwill and Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2429415 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2430416 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, Changes in Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2431417 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, Amortization Expense Related to Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2132108 - Disclosure - ACCRUED AND OTHER LIABILITIES link:presentationLink link:calculationLink link:definitionLink 2333307 - Disclosure - ACCRUED AND OTHER LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2434418 - Disclosure - ACCRUED AND OTHER LIABILITIES, Accrued and Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2435419 - Disclosure - ACCRUED AND OTHER LIABILITIES, Changes in Deferred Revenue Loyalty Program Liability (Details) link:presentationLink link:calculationLink link:definitionLink 2136109 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 2337308 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 2438420 - Disclosure - DEBT, Debt Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2439421 - Disclosure - DEBT, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2440422 - Disclosure - DEBT, Annual Maturities of Term Loan (Details) link:presentationLink link:calculationLink link:definitionLink 2141110 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 2142111 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 2443423 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2144112 - Disclosure - STOCKHOLDER'S EQUITY AND SHARE-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 2345309 - Disclosure - STOCKHOLDER'S EQUITY AND SHARE-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2446424 - Disclosure - STOCKHOLDER'S EQUITY AND SHARE-BASED COMPENSATION, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2447425 - Disclosure - STOCKHOLDER'S EQUITY AND SHARE-BASED COMPENSATION, Fair Value of Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 2448426 - Disclosure - STOCKHOLDER'S EQUITY AND SHARE-BASED COMPENSATION, Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2449427 - Disclosure - STOCKHOLDER'S EQUITY AND SHARE-BASED COMPENSATION, Incentive Units Authorized and Issued (Details) link:presentationLink link:calculationLink link:definitionLink 2450428 - Disclosure - STOCKHOLDER'S EQUITY AND SHARE-BASED COMPENSATION, Number of Units and Weighted-average Grant Date Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 2151113 - Disclosure - EARNINGS (LOSS) PER SHARE link:presentationLink link:calculationLink link:definitionLink 2352310 - Disclosure - EARNINGS (LOSS) PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 2453429 - Disclosure - EARNINGS (LOSS) PER SHARE (Details) link:presentationLink link:calculationLink link:definitionLink 2154114 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2355311 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 2456430 - Disclosure - INCOME TAXES, Provision (Benefit) for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 2457431 - Disclosure - INCOME TAXES, Reconciliation of Tax Provision (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 2458432 - Disclosure - INCOME TAXES, Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2459433 - Disclosure - INCOME TAXES, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2160115 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2361312 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2462434 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 2463435 - Disclosure - COMMITMENTS AND CONTINGENCIES - Future Minimum Rental Payments (Details) link:presentationLink link:calculationLink link:definitionLink 2164116 - Disclosure - DEFINED CONTRIBUTION PLAN link:presentationLink link:calculationLink link:definitionLink 2465436 - Disclosure - DEFINED CONTRIBUTION PLAN (Details) link:presentationLink link:calculationLink link:definitionLink 2166117 - Disclosure - QUARTERLY FINANCIAL INFORMATION (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 2367313 - Disclosure - QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Tables) link:presentationLink link:calculationLink link:definitionLink 2468437 - Disclosure - QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) link:presentationLink link:calculationLink link:definitionLink