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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narratives (Details) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 24, 2021 | Dec. 31, 2024 USD ($) contract segment | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Significant Accounting Policies |  |  |  |
Allowance for credit loss |  | $ 100 | $ 0 |
Credit losses |  | 300 | 2,200 | $ 1,500
Net of recoveries |  | 800 | 300 | 500
Capitalized software development costs |  | $ 10,400 | 9,400 | 3,400
Number of performance obligations | contract |  | 2 |  |
Revenue |  | $ 139,236 | 150,687 | 169,495
Deferred contract acquisition costs, term (in years) |  | 3 years |  |
Cashback rewards |  | $ 489 | 915 |
Cashback rewards offset against outstanding customer receivables |  | 300 | 200 |
Cashback rewards from contract revenue |  | $ 8,900 | 7,000 | 2,800
Vesting period (in years) |  | 4 years |  |
Consideration revenue from vendors |  | $ 7,200 | 10,100 | 6,200
Advertising expense |  | $ 2,500 | $ 10,400 | $ 30,900
Number of reportable segments | segment |  | 1 |  |
Restricted stock units |  |  |  |
Significant Accounting Policies |  |  |  |
Vesting period (in years) | 8 years |  |  |
Service period (in years) |  | 1 year |  |
Restricted stock units | Share-based Payment Arrangement, Nonemployee |  |  |  |
Significant Accounting Policies |  |  |  |
Service period (in years) |  | 3 months |  |
Interchange |  |  |  |
Significant Accounting Policies |  |  |  |
Revenue |  | $ 9,200 |  |
Computers and equipment |  |  |  |
Significant Accounting Policies |  |  |  |
Property, plant and equipment useful life (in years) |  | 3 years |  |
Furniture and fixtures |  |  |  |
Significant Accounting Policies |  |  |  |
Property, plant and equipment useful life (in years) |  | 5 years |  |
Commercial building |  |  |  |
Significant Accounting Policies |  |  |  |
Property, plant and equipment useful life (in years) |  | 30 years |  |
Capitalized software |  |  |  |
Significant Accounting Policies |  |  |  |
Property, plant and equipment useful life (in years) |  | 3 years |  |

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