COLLATERALIZED ARRANGEMENTS AND FINANCING - Units, cost basis and fair value of crypto asset borrowings and borrowed (Details) $ in Thousands |
Jun. 30, 2026
USD ($)
unit
|
Dec. 31, 2025
USD ($)
unit
|
|---|---|---|
| Crypto Assets, Borrowed [Abstract] | ||
| Cost Basis | $ 307,245 | $ 350,367 |
| Fair Value | $ 229,076 | $ 318,849 |
| Bitcoin | ||
| Crypto Assets, Borrowed [Abstract] | ||
| Units | unit | 1,869 | 1,920 |
| Cost Basis | $ 153,766 | $ 173,848 |
| Fair Value | $ 109,362 | $ 167,989 |
| Ethereum | ||
| Crypto Assets, Borrowed [Abstract] | ||
| Units | unit | 65,685 | 43,536 |
| Cost Basis | $ 129,732 | $ 149,374 |
| Fair Value | 103,090 | 129,162 |
| Other crypto assets | ||
| Crypto Assets, Borrowed [Abstract] | ||
| Cost Basis | 23,747 | 27,145 |
| Fair Value | $ 16,624 | $ 21,698 |