Consolidated Statements of Changes in Net Assets - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operations:
Net investment income (loss)	$ 38,912	$ 26,715	$ 71,070	$ 48,418
Net realized gain (loss)	550	2,608	(17,799)	4,780
Net change in unrealized appreciation	(9,191)	(12,094)	5,185	(2,288)
Net increase (decrease) in net assets resulting from operations	29,171	17,229	58,456	50,910
Stockholder distributions:
Distributions from distributable earnings	(24,534)	(21,951)	(49,068)	(43,902)
Net decrease in net assets resulting from stockholder distributions	(24,534)	(21,951)	(49,068)	(43,902)
Total increase (decrease) in net assets	4,637	(4,722)	9,388	7,008
Net assets at beginning of period	1,121,142	1,111,736	1,116,391	1,100,006
Net assets at end of period	$ 1,125,779	$ 1,107,014	$ 1,125,779	$ 1,107,014
Net asset value per common share	$ 17.44	$ 17.15	$ 17.44	$ 17.15
Common stock outstanding at end of period	64,562,265	64,562,265	64,562,265	64,562,265