BASIS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Vendor Incentives and Rebates Provided to POS Partners (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| POS Partners | ||||
| Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | ||||
| Marketing expense | $ 7.9 | $ 7.6 | $ 16.7 | $ 14.4 |