Consolidated Statements of Changes in Net Assets - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Investment Company, Net Assets [Roll Forward]
Net assets at the beginning of period	$ 1,842,156	$ 1,721,151
Increase (decrease) in net assets resulting from operations:
Net investment income (loss)	46,228	54,651
Net realized gain (loss)	549	(5,625)
Net change in unrealized appreciation (depreciation)	(17,107)	2,658
Net increase (decrease) in net assets resulting from operations	29,670	51,684
Distributions to stockholders from:
Distributable earnings	(44,010)	(44,447)
Total distributions to stockholders	(44,010)	(44,447)
Capital transactions:
Issuance of common stock, net of underwriting and offering costs	0	95,847
Reinvestment of dividends	0	12,792
Repurchase of common stock	(10,009)	0
Net increase (decrease) in net assets resulting from capital transactions	(10,009)	108,639
Total increase (decrease) in net assets	(24,349)	115,876
Net assets at end of period	$ 1,817,807	$ 1,837,027
Dividends per share (in dollars per share)	$ 0.50	$ 0.50