Investments - ISLP Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Investment Income
Total investment income (loss)	$ 75,715	$ 52,364	$ 150,452	$ 98,375
Expenses
Interest expense	20,459	11,027	40,009	21,670
Net investment income (loss)	40,009	26,715	72,762	48,418
Net realized and unrealized gain (losses)
Net realized gain (loss) on foreign currency transactions	(321)	3,166	(4,534)	2,678
Total net gains (losses)	(9,741)	(9,486)	(12,614)	2,492
Net increase (decrease) in net assets resulting from operations	29,171	17,229	58,456	50,910
International Senior Loan Program, LLC
Investment Income
Interest Income	17,980	9,394	35,349	17,637
Total investment income (loss)	17,980	9,394	35,349	17,637
Expenses
Interest expense	6,028	1,873	11,689	3,764
General and administrative expenses	762	595	1,562	1,162
Total expenses	15,561	6,793	30,408	13,253
Net investment income (loss)	2,419	2,601	4,941	4,384
Net realized and unrealized gain (losses)
Net realized gain (loss) on investments	(1,125)	(1,219)	(3,157)	(1,895)
Net realized gain (loss) on foreign currency transactions	(374)	2,173	(1,567)	2,808
Net realized gain (loss) on forward contracts	145	723	18	2,136
Net unrealized gain (loss) on foreign contracts	(5,178)	15,641	(7,585)	19,497
Net change in unrealized appreciation on forward contracts	(429)	3,210	(1,282)	2,755
Net change in unrealized appreciation on investments	8,886	(26,547)	19,021	(32,970)
Total net gains (losses)	1,925	(6,019)	5,448	(7,669)
Net increase (decrease) in net assets resulting from operations	4,344	(3,418)	10,389	(3,285)
International Senior Loan Program, LLC | Related Party
Expenses
Interest expense	$ 8,771	$ 4,325	$ 17,157	$ 8,327