COLLATERALIZED ARRANGEMENTS AND FINANCING - Units, cost basis and fair value of crypto asset borrowings and borrowed (Details) $ in Thousands |
Sep. 30, 2026
USD ($)
unit
|
Dec. 31, 2025
USD ($)
unit
|
|---|---|---|
| Crypto Assets, Borrowed [Abstract] | ||
| Cost Basis | $ 334,118 | $ 350,367 |
| Fair Value | $ 389,657 | $ 318,849 |
| Bitcoin | ||
| Crypto Assets, Borrowed [Abstract] | ||
| Units | unit | 767 | 1,920 |
| Cost Basis | $ 61,966 | $ 173,848 |
| Fair Value | $ 64,111 | $ 167,989 |
| Ethereum | ||
| Crypto Assets, Borrowed [Abstract] | ||
| Units | unit | 70,560 | 43,536 |
| Cost Basis | $ 171,712 | $ 149,374 |
| Fair Value | 189,379 | 129,162 |
| Other crypto assets | ||
| Crypto Assets, Borrowed [Abstract] | ||
| Cost Basis | 100,440 | 27,145 |
| Fair Value | $ 136,167 | $ 21,698 |