INVESTMENTS - Marketable Securities (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2026 USD ($) security	Dec. 31, 2025 USD ($) security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding Face Amount	$ 356,225	$ 272,809
Carrying Value	$ 354,007	$ 273,151
Number of non rated securities \| security	23	15
Investment grade debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding Face Amount	$ 276,249	$ 202,358
Net Fair Value Adjustment	(613)	1,500
Carrying Value	275,636	203,858
Below investment grade debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding Face Amount	44,216	29,648
Net Fair Value Adjustment	(632)	(521)
Carrying Value	43,584	29,127
Residual interest securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding Face Amount	35,760	40,803
Net Fair Value Adjustment	(973)	(637)
Carrying Value	34,787	40,166
Marketable securities:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Fair Value Adjustment	$ (2,218)	$ 342
Number of non rated securities \| security	28	20
Debt securities collateralized under repurchase agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 318,100	$ 231,800
Non-Rated Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding Face Amount	17,000	20,900
Interest-Only Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding Face Amount	$ 18,700	$ 19,900