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RELATED PARTY TRANSACTIONS - Administration , Co-investment and STRS JV (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
RELATED PARTY TRANSACTIONS
Administrative service fees	$ 170	$ 170	$ 341	$ 341
Net realized gains (losses)			$ (4,335)	(21,671)
Administration Agreement
RELATED PARTY TRANSACTIONS
Agreement may be terminated by either party without penalty upon days			60 days
Administrative service fees	170	341	$ 170	341
Administration Agreement \| White Horse Advisers
RELATED PARTY TRANSACTIONS
Other liabilities	7,878,198		7,878,198		$ 7,220,543
Administration Agreement \| STRS JV
RELATED PARTY TRANSACTIONS
Proceeds from sale of investments	7,803	22,845	26,709	39,846
Net realized gains (losses)	$ 21	$ (2)	(1)	(2)
Cash contribution			24,409	$ 39,846
In-kind contribution			$ 2,300