BORROWINGS - Components of Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Amortization of deferred financing costs	$ 2,021	$ 1,818	$ 1,977
Cash paid for interest expense and credit facility fees	49,031	60,126	69,812
Line of Credit | Secured Debt | SPV Credit Facility
Line of Credit Facility [Line Items]
Interest expense	13,834	24,586	39,741
Facility unused commitment fee	697	2,818	1,650
Amortization of deferred financing costs	944	895	976
Total interest expense and credit facility fees	15,475	28,299	42,367
Cash paid for interest expense and credit facility fees	11,960	34,803	42,005
Weighted average debt principal outstanding	$ 226,794	$ 319,178	$ 536,500
Weighted average interest rate	6.02%	7.70%	7.41%
Line of Credit | Secured Debt | SPV2 Credit Facility
Line of Credit Facility [Line Items]
Interest expense	$ 16,521	$ 21,736	$ 25,867
Facility unused commitment fee	957	704	617
Amortization of deferred financing costs	916	895	1,001
Total interest expense and credit facility fees	18,394	23,335	27,485
Cash paid for interest expense and credit facility fees	14,974	25,323	27,807
Weighted average debt principal outstanding	$ 240,227	$ 273,886	$ 335,120
Weighted average interest rate	6.78%	7.94%	7.72%
Secured Debt | 2024-1 Debt
Line of Credit Facility [Line Items]
Interest expense	$ 17,447	$ 3,262
Amortization of deferred financing costs	161	28
Total interest expense and credit facility fees	17,608	3,290
Cash paid for interest expense and credit facility fees	22,097	0
Weighted average debt principal outstanding	$ 289,000	$ 289,000
Weighted average interest rate	6.01%	6.45%