INVESTMENTS - Schedule of Equity Method Investments (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Investments in and Advances to Affiliates [Abstract] | ||||
| Equity method private investment partnership interests - principal, net investment income | $ 2,290 | $ 10,760 | $ 2,765 | $ 32,960 |
| Equity method private investment partnership interests and other, net investment income | (3,146) | 2,685 | (5,702) | 5,173 |
| Equity method private investment partnership interests and other (held at fair value), net investment income | 2,112 | 2,243 | 4,118 | 4,238 |
| Equity method private investment partnership interests and other (held at fair value), changes in fair value | $ 9,203 | $ 4,015 | $ 42,862 | $ 8,296 |