INVESTMENTS - Schedule of Investments in Loans and Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Allowance for Credit Losses	$ (494,869)	$ (466,520)	$ (510,294)	$ (178,130)	$ (126,360)	$ (100,958)
Fair Value	870,061		778,409
Accrued interest receivable	18,000		14,300
Securitization notes
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	312,344		240,396
Gross Unrealized Gains	271		386
Gross Unrealized Losses	(91)		(509)
Allowance for Credit Losses	(2,873)	(2,873)	0	0	0	0
Fair Value	309,651		240,273
Securitization certificates
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	1,045,199		1,048,734
Gross Unrealized Gains	5,851		7,926
Gross Unrealized Losses	(34,397)		(14,676)
Allowance for Credit Losses	(490,896)	$ (462,436)	(508,741)	$ (174,077)	$ (121,349)	$ (98,679)
Fair Value	$ 525,757		$ 533,243