INVESTMENTS - Selected Balance Sheet Information For STRS JV (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Assets
Investments	$ 764,554	$ 819,208
Cash and cash equivalents	9,855	12,185	$ 9,579
Unrealized appreciation on foreign currency forward contracts	10
Total assets	796,658	851,019
Liabilities
Credit facility	430,992	475,958
Interest payable on credit facility	3,772	2,087
Total liabilities	453,639	501,268
Total liabilities and total net assets	796,658	851,019
Investments, amortized cost	$ 773,406	$ 831,960
Derivative Asset Type	Foreign currency forward contracts	Foreign currency forward contracts
STRS JV
Assets
Investments	$ 280,877	$ 259,510
Cash and cash equivalents	23,715	13,004
Interest receivable	1,433	735
Unrealized appreciation on foreign currency forward contracts	79	19
Other assets	288	255
Total assets	306,392	273,523
Liabilities
Credit facility	149,322	145,003
Note payable to members	120,000	100,000
Interest payable on credit facility	576	282
Interest payable on notes to members	2,630	1,575
Other liabilities	764	651
Total liabilities	273,292	247,511
Members' equity	33,100	26,012
Total liabilities and total net assets	306,392	273,523
Investments, amortized cost	$ 285,614	$ 260,472