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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of fair value measurement of level 3 financial assets and liabilities (Details) - Significant unobservable inputs (Level 3) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Contingent consideration |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance at beginning of period | $ 4,593 | $ 24,976 | $ 4,538 | $ 25,194
Fair Value Adjustments | 63 | 288 | 166 | 140
Relating to Undistributed Earnings | 0 | 0 | 0 | 0
Purchases/ Originations | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements/ Repayments | (48) | (48) | (96) | (118)
Transfer in and/or out of Level 3 | 0 | 0 | 0 | 0
Balance at end of period | 4,608 | 25,216 | 4,608 | 25,216
Change in unrealized gains/(losses) | (63) | (288) | (166) | (140)
Liability-classified warrants |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance at beginning of period | 5,160 |  | 0 |
Fair Value Adjustments | (1,000) |  | (3,700) |
Relating to Undistributed Earnings | 0 |  | 0 |
Purchases/ Originations | 0 |  | 7,860 |
Sales | 0 |  | 0 |
Settlements/ Repayments | 0 |  | 0 |
Transfer in and/or out of Level 3 | 0 |  | 0 |
Balance at end of period | 4,160 |  | 4,160 |
Change in unrealized gains/(losses) | 1,000 |  | 3,700 |
Embedded derivative |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance at beginning of period | 14,593 |  | 0 |
Fair Value Adjustments | (11,468) |  | (8,119) |
Relating to Undistributed Earnings | 0 |  | 0 |
Purchases/ Originations | 0 |  | 11,244 |
Sales | 0 |  | 0 |
Settlements/ Repayments | (3,125) |  | (3,125) |
Transfer in and/or out of Level 3 | 0 |  | 0 |
Balance at end of period | 0 |  | 0 |
Change in unrealized gains/(losses) | 11,468 |  | 8,119 |
Equity securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 27,530 | 386,244 | 40,516 | 452,581
Fair Value Adjustments | 197 | (202,573) | (3,648) | (258,961)
Relating to Undistributed Earnings | 0 | 8 | 0 | 20
Purchases/ Originations | 24,998 | 181 | 25,867 | 616
Sales | 0 | 68,875 | (10,000) | (78,197)
Settlements/ Repayments | (24,999) | 0 | (25,009) | 0
Transfer in and/or out of Level 3 | 0 | (3) | 0 | (1,077)
Balance at end of period | 27,726 | 114,982 | 27,726 | 114,982
Change in unrealized gains (losses) | 197 | (202,679) | (3,648) | (262,154)
Loans receivable at fair value |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 98,596 | 452,496 | 90,103 | 532,419
Fair Value Adjustments | 799 | (175,582) | (7,296) | (187,783)
Relating to Undistributed Earnings | 0 | 1,102 | 0 | 4,262
Purchases/ Originations | 624 | 7,129 | 58,632 | 38,105
Sales | 3,575 | 0 | (10,415) | (22,785)
Settlements/ Repayments | (47,464) | (55,946) | (82,044) | (135,019)
Transfer in and/or out of Level 3 | 0 | 0 | 0 | 0
Balance at end of period | 48,980 | 229,199 | 48,980 | 229,199
Change in unrealized gains (losses) | 799 | (177,060) | (8,834) | (196,240)
Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 0 |  | 0 |
Fair Value Adjustments | 1,029 |  | 1,029 |
Relating to Undistributed Earnings | 0 |  | 0 |
Purchases/ Originations | 0 |  | 0 |
Sales | 0 |  | 0 |
Settlements/ Repayments | 0 |  | 0 |
Transfer in and/or out of Level 3 | 0 |  | 0 |
Balance at end of period | 1,029 |  | 1,029 |
Change in unrealized gains (losses) | 1,029 |  | 1,029 |
Trading gains (losses) and fair value adjustments | Equity securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair Value Adjustments | (92) | (39,114) | (1,174) | (49,505)
Trading gains (losses) and fair value adjustments | Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair Value Adjustments | 902 |  |  |
Realized and unrealized gains (losses) on investments | Equity securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair Value Adjustments | 289 | $ (163,458) | $ (2,474) | $ (209,456)
Realized and unrealized gains (losses) on investments | Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair Value Adjustments | $ 127 |  |  |

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