NET ASSETS - Summary of Changes in Net Assets (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jul. 17, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Investment Company, Net Assets [Roll Forward]
Preferred stock at beginning of period (in shares)				2,000,000
Net assets at beginning of period		$ 910,817	$ 899,681	$ 912,812	$ 917,423
Common stock at beginning of period (in shares)				50,794,941
Reinvestment of dividends (in shares)	53,517			53,517	0
Dividend reinvestment	$ 977	977		$ 977	$ 0
Repurchase of common stock			0		(3,993)
Net investment income (loss)		24,884	27,111	80,206	80,856
Net realized gain (loss)		(12,070)	264	(26,375)	(21,050)
Net change in unrealized appreciation (depreciation) on investments		6,797	2,612	13,790	2,881
Dividends declared on common stock and preferred stock		$ (24,801)	(23,224)	$ (74,806)	(69,673)
Preferred stock at end of period (in shares)		2,000,000		2,000,000
Net assets at end of period		$ 906,604	$ 906,444	$ 906,604	$ 906,444
Common stock at end of period (in shares)		50,848,458	50,794,941	50,848,458	50,794,941
Preferred Stock
Investment Company, Net Assets [Roll Forward]
Preferred stock at beginning of period (in shares)		2,000,000	2,000,000	2,000,000	2,000,000
Net assets at beginning of period		$ 50,000	$ 50,000	$ 50,000	$ 50,000
Preferred stock at end of period (in shares)		2,000,000	2,000,000	2,000,000	2,000,000
Net assets at end of period		$ 50,000	$ 50,000	$ 50,000	$ 50,000
Common Stock
Investment Company, Net Assets [Roll Forward]
Net assets at beginning of period		$ 508	$ 508	$ 508	$ 511
Common stock at beginning of period (in shares)		50,794,941	50,794,941	50,794,941	51,060,136
Reinvestment of dividends (in shares)		53,517	0	53,517	0
Repurchase of common stock (in shares)		0	0	0	(265,195)
Repurchase of common stock					$ (3)
Net assets at end of period		$ 508	$ 508	$ 508	$ 508
Common stock at end of period (in shares)		50,848,458	50,794,941	50,848,458	50,794,941
Capital in Excess of Par Value
Investment Company, Net Assets [Roll Forward]
Net assets at beginning of period		$ 1,015,681	$ 1,018,234	$ 1,015,681	$ 1,022,224
Dividend reinvestment		977		977
Repurchase of common stock					(3,990)
Net assets at end of period		1,016,658	1,018,234	1,016,658	1,018,234
Offering Costs
Investment Company, Net Assets [Roll Forward]
Net assets at beginning of period		(1,633)	(1,633)	(1,633)	(1,633)
Net assets at end of period		(1,633)	(1,633)	(1,633)	(1,633)
Accumulated Net Investment Income (Loss)
Investment Company, Net Assets [Roll Forward]
Net assets at beginning of period		67,880	50,393	62,563	43,097
Net investment income (loss)		24,884	27,111	80,206	80,856
Dividends declared on common stock and preferred stock		(24,801)	(23,224)	(74,806)	(69,673)
Net assets at end of period		67,963	54,280	67,963	54,280
Accumulated Net Realized Gain (Loss)
Investment Company, Net Assets [Roll Forward]
Net assets at beginning of period		(164,059)	(150,375)	(149,754)	(129,061)
Net realized gain (loss)		(12,070)	264	(26,375)	(21,050)
Net assets at end of period		(176,129)	(150,111)	(176,129)	(150,111)
Accumulated Net Unrealized Appreciation (Depreciation)
Investment Company, Net Assets [Roll Forward]
Net assets at beginning of period		(57,560)	(67,446)	(64,553)	(67,715)
Net change in unrealized appreciation (depreciation) on investments		6,797	2,612	13,790	2,881
Net assets at end of period		$ (50,763)	$ (64,834)	$ (50,763)	$ (64,834)