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Amount of cumulative increase (decrease) in investment from unrealized gain (loss) when value exceeds (is less than) cost for federal income tax purpose.

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Distributions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended							9 Months Ended		12 Months Ended
	Nov. 06, 2023	Aug. 07, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Class of Stock [Line Items]
Distributions per share (in dollars per share)			$ 0.39	$ 0.34	$ 0.34	$ 0.58	$ 0.31	$ 0.28	$ 0.28	$ 1.07	$ 0.87	$ 1.45
Percentage of market price										95.00%
Aggregate gross unrealized appreciation			$ 35,367			$ 31,155				$ 35,367		$ 31,155
Aggregate gross unrealized depreciation			142,260			122,246				142,260		122,246
Cumulative gross unrealized appreciation (depreciation) for federal income tax purposes			(106,893)			(91,091)				(106,893)		(91,091)
Aggregate cost of securities for federal income tax			$ 1,951,770			$ 1,851,121				$ 1,951,770		$ 1,851,121
Payable on October 16, 2023 and January 15, 2024
Class of Stock [Line Items]
Distributions per share (in dollars per share)		$ 0.05
Payable on December 15, 2023 \| Subsequent Event
Class of Stock [Line Items]
Distributions per share (in dollars per share)	$ 0.34