CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Investment Income, Nonoperating [Abstract]
PIK interest income	$ 2,974	$ 479	$ 7,476	$ 2,076
Total Investment Income	82,138	68,175	219,624	204,570
Expenses
Management fees	4,428	4,374	13,203	12,972
Performance-based incentive fees	4,601	5,917	16,212	18,233
Interest and other debt expenses	31,854	26,275	85,024	77,043
Administrative services expense	1,036	1,621	3,084	4,469
Other general and administrative expenses	2,246	2,494	6,478	6,986
Total expenses	44,165	40,681	124,001	119,703
Performance-based incentive fee offset				(274)
Expense reimbursements	(162)	(403)	(597)	(1,089)
Net Expenses	44,003	40,278	123,404	118,340
Net Investment Income	38,135	27,897	96,220	86,230
Net realized gains (losses):
Foreign currency transactions	(40)	12	(624)	50
Net realized gains (losses)	487	(200)	(23,238)	(1,200)
Net change in unrealized gains (losses):
Foreign currency translations	(1,433)	2,251	(707)	(409)
Net change in unrealized gains (losses)	(11,906)	2,266	1,779	470
Net Realized and Change in Unrealized Gains (Losses)	(11,419)	2,066	(21,459)	(730)
Net Increase (Decrease) in Net Assets Resulting from Operations	$ 26,716	$ 29,963	$ 74,761	$ 85,500
Earnings (Loss) Per Share - Basic	$ 0.31	$ 0.46	$ 1.03	$ 1.31
Non-controlled/Non-affiliated Investments
Investment Income, Nonoperating [Abstract]
Interest income (excluding Payment-in-kind ("PIK") interest income)	$ 72,640	$ 61,939	$ 192,782	$ 183,718
Dividend income	447	104	500	242
PIK interest income	2,938	447	7,371	1,115
Other income	992	275	3,593	3,243
Net realized gains (losses):
Net realized gains (losses)	527	(212)	(6,914)	(1,250)
Net change in unrealized gains (losses):
Net change in unrealized gains (losses)	(11,083)	(3,484)	(10,646)	(2,104)
Non-controlled/Affiliated Investments
Investment Income, Nonoperating [Abstract]
Interest income (excluding Payment-in-kind ("PIK") interest income)	697	284	2,098	843
Dividend income	241	636	476	704
PIK interest income	36	32	105	92
Net change in unrealized gains (losses):
Net change in unrealized gains (losses)	(2,956)	1,169	(7,989)	1,447
Controlled Investments
Investment Income, Nonoperating [Abstract]
Interest income (excluding Payment-in-kind ("PIK") interest income)	4,097	4,458	12,649	13,494
PIK interest income				869
Other income	50		50	250
Net realized gains (losses):
Net realized gains (losses)			(15,700)
Net change in unrealized gains (losses):
Net change in unrealized gains (losses)	$ 3,566	$ 2,330	$ 21,121	$ 1,536