CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
CHANGES IN NET ASSETS
Balances at the beginning (in shares)					127,233,000
Balances at the beginning			$ 1,576,430	$ 858,859	$ 1,302,667	$ 754,916
Net investment income			48,491	27,358	87,201	50,720
Net realized gain (loss)			332	284	320	1,257
Net change in unrealized gain (loss)			(3,413)	(6,080)	$ 7,196	$ (1,362)
Issuance of common stock (in shares)					37,650,657	17,795,586
Issuances of common stock			121,874	85,291	$ 386,721	$ 181,268
Repurchase of common stock (in shares)					(3,138,449)	(1,571,737)
Repurchases of common stock			(11,810)	(6,816)	$ (32,252)	$ (16,001)
Distributions declared to stockholders			(45,288)	(24,203)	$ (79,641)	$ (42,836)
Stock issued in connection with dividend reinvestment plan (in shares)	916,989	664,510			3,230,799	1,581,499
Stock issued in connection with dividend reinvestment plan	$ 9,400	$ 6,731	$ 18,862	9,400	$ 33,266	$ 16,131
Balances at the end (in shares)			164,976,000		164,976,000
Balances at the end	$ 944,093	$ 858,859	$ 1,705,478	$ 944,093	$ 1,705,478	$ 944,093
Common Stock
CHANGES IN NET ASSETS
Balances at the beginning (in shares)			152,507,000	83,765,000	127,233,000	74,533,000
Balances at the beginning			$ 153	$ 84	$ 127	$ 75
Issuance of common stock (in shares)			11,787,000	8,321,000	37,651,000	17,796,000
Issuances of common stock			$ 12	$ 8	$ 38	$ 17
Repurchase of common stock (in shares)			(1,143,000)	(664,000)	(3,139,000)	(1,571,000)
Repurchases of common stock			$ (1)	$ (1)	$ (3)	$ (2)
Stock issued in connection with dividend reinvestment plan (in shares)			1,825,000	917,000	3,231,000	1,581,000
Stock issued in connection with dividend reinvestment plan			$ 1	$ 1	$ 3	$ 2
Balances at the end (in shares)	92,339,000	83,765,000	164,976,000	92,339,000	164,976,000	92,339,000
Balances at the end	$ 92	$ 84	$ 165	$ 92	$ 165	$ 92
Capital in excess of par value
CHANGES IN NET ASSETS
Balances at the beginning			1,541,161	837,918	1,282,378	744,404
Issuances of common stock			121,862	85,283	386,683	181,251
Repurchases of common stock			(11,809)	(6,815)	(32,249)	(15,999)
Stock issued in connection with dividend reinvestment plan			18,861	9,399	33,263	16,129
Balances at the end	925,785	837,918	1,670,075	925,785	1,670,075	925,785
Accumulated undistributed (overdistributed) earnings
CHANGES IN NET ASSETS
Balances at the beginning			35,116	20,857	20,162	10,437
Net investment income			48,491	27,358	87,201	50,720
Net realized gain (loss)			332	284	320	1,257
Net change in unrealized gain (loss)			(3,413)	(6,080)	7,196	(1,362)
Distributions declared to stockholders			(45,288)	(24,203)	(79,641)	(42,836)
Balances at the end	$ 18,216	$ 20,857	$ 35,238	$ 18,216	$ 35,238	$ 18,216