FAIR VALUE MEASUREMENT - Schedule of Level 3 Roll Forward (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Investments in securities under the fair value option
Balance, beginning of period	$ 641,617	$ 825,121	$ 663,189	$ 626,368
Transfer from Level 2	0	0	0	10,469
Additions	182,259	146,821	248,978	406,696
Cash received	(60,706)	(19,559)	(108,016)	(42,572)
Gain on sale of Investments in loans and securities	2,699	0	8,593	0
Change in accrued interest on investments	5,659	0	8,937	0
Change in fair value (OCI)	(5,849)	(45,905)	(21,795)	(67,632)
Credit-related impairment loss, net of recoveries	(28,944)	(53,060)	(63,151)	(79,911)
Balance, end of period	$ 736,735	$ 853,418	$ 736,735	$ 853,418