Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Selected Quarterly Financial Information [Abstract]
Total investment income	$ 92,522	$ 83,349	$ 82,234	$ 74,294	$ 73,409	$ 67,055	$ 68,331	$ 59,122	$ 332,399	$ 267,917	$ 157,583
Net investment income	57,244	51,965	51,310	40,565	39,329	35,093	38,643	32,665	$ 201,084	$ 145,730	$ 98,391
Net increase (decrease) in net assets resulting from operations	$ 57,910	$ 46,590	$ 41,054	$ 51,398	$ 38,129	$ 42,577	$ 30,564	$ 40,527
Net investment income per share—basic (in dollars per share)	$ 0.61	$ 0.59	$ 0.62	$ 0.57	$ 0.64	$ 0.58	$ 0.66	$ 0.61	$ 2.40	$ 2.49	$ 2.01
Net investment income per share— diluted (in dollars per share)	$ 0.61	$ 0.59	$ 0.62	$ 0.57	$ 0.64	$ 0.58	$ 0.66	$ 0.61	$ 2.40	$ 2.49	$ 2.01