CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Sep. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
CHANGES IN NET ASSETS
Balances at the beginning (in shares)					127,233,000
Balances at the beginning			$ 1,705,478	$ 944,093	$ 1,302,667	$ 754,916
Net investment income			52,598	31,022	139,799	81,742
Net realized gain (loss)			250	26	570	1,283
Net change in unrealized gain (loss)			5,335	(720)	$ 12,531	$ (2,082)
Issuance of common stock (in shares)					53,382,846	35,449,407
Issuances of common stock			162,671	180,422	$ 549,392	$ 361,690
Repurchase of common stock (in shares)					(4,890,609)	(2,190,063)
Repurchases of common stock			(18,118)	(6,319)	$ (50,370)	$ (22,320)
Distributions declared to stockholders			(49,259)	(27,444)	$ (128,900)	$ (70,280)
Stock issued in connection with dividend reinvestment plan (in shares)	2,031,890	916,989			5,262,689	2,625,753
Stock issued in connection with dividend reinvestment plan	$ 21,010	$ 9,400	$ 21,010	10,672	$ 54,276	$ 26,803
Balances at the end (in shares)	180,988,000		180,988,000		180,988,000
Balances at the end	$ 1,879,965	$ 944,093	$ 1,879,965	$ 1,131,752	$ 1,879,965	$ 1,131,752
Common Stock
CHANGES IN NET ASSETS
Balances at the beginning (in shares)			164,976,000	92,339,000	127,233,000	74,533,000
Balances at the beginning			$ 165	$ 92	$ 127	$ 75
Issuance of common stock (in shares)			15,732,000	17,653,000	53,383,000	35,449,000
Issuances of common stock			$ 16	$ 18	$ 54	$ 35
Repurchase of common stock (in shares)			(1,752,000)	(618,000)	(4,891,000)	(2,189,000)
Repurchases of common stock			$ (2)	$ (1)	$ (5)	$ (3)
Stock issued in connection with dividend reinvestment plan (in shares)			2,032,000	1,044,000	5,263,000	2,625,000
Stock issued in connection with dividend reinvestment plan			$ 2	$ 1	$ 5	$ 3
Balances at the end (in shares)	180,988,000	92,339,000	180,988,000	110,418,000	180,988,000	110,418,000
Balances at the end	$ 181	$ 92	$ 181	$ 110	$ 181	$ 110
Capital in excess of par value
CHANGES IN NET ASSETS
Balances at the beginning			1,670,075	925,785	1,282,378	744,404
Issuances of common stock			162,655	180,404	549,338	361,655
Repurchases of common stock			(18,116)	(6,318)	(50,365)	(22,317)
Stock issued in connection with dividend reinvestment plan			21,008	10,671	54,271	26,800
Balances at the end	1,835,622	925,785	1,835,622	1,110,542	1,835,622	1,110,542
Accumulated undistributed (overdistributed) earnings
CHANGES IN NET ASSETS
Balances at the beginning			35,238	18,216	20,162	10,437
Net investment income			52,598	31,022	139,799	81,742
Net realized gain (loss)			250	26	570	1,283
Net change in unrealized gain (loss)			5,335	(720)	12,531	(2,082)
Distributions declared to stockholders			(49,259)	(27,444)	(128,900)	(70,280)
Balances at the end	$ 44,162	$ 18,216	$ 44,162	$ 21,100	$ 44,162	$ 21,100