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INVESTMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - Recurring - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Funds held for clients |  |
Total | $ 89,881 | $ 90,436
Money market funds |  |
Funds held for clients |  |
Funds held for clients | 4,651 | 1,784
Available-for-sale securities |  |
Funds held for clients |  |
Funds held for clients | 85,230 | 88,652
Level 1 |  |
Funds held for clients |  |
Total | 4,651 | 1,784
Level 1 | Money market funds |  |
Funds held for clients |  |
Funds held for clients | 4,651 | 1,784
Level 1 | Available-for-sale securities |  |
Funds held for clients |  |
Funds held for clients | 0 | 0
Level 2 |  |
Funds held for clients |  |
Total | 85,230 | 88,652
Level 2 | Money market funds |  |
Funds held for clients |  |
Funds held for clients | 0 | 0
Level 2 | Available-for-sale securities |  |
Funds held for clients |  |
Funds held for clients | 85,230 | 88,652
Level 3 |  |
Funds held for clients |  |
Total | 0 | 0
Level 3 | Money market funds |  |
Funds held for clients |  |
Funds held for clients | 0 | 0
Level 3 | Available-for-sale securities |  |
Funds held for clients |  |
Funds held for clients | $ 0 | $ 0

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