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Agreements - Management Fees and Incentive Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Management fee	$ 11,334	$ 11,717	$ 34,549	$ 35,040
Less: management fee waived (See Note 5)	(1,013)	(1,115)	(3,172)	(3,349)
Total management fee	10,321	10,602	31,377	31,691
Incentive fee	10,169	8,202	29,748	23,605
Incentive fee payable	10,169		10,169		$ 6,296
Incentive fee, excluding accrued capital gains incentive fees
Related Party Transaction [Line Items]
Incentive fee	10,169	8,202	29,748	23,605
Accrued capital gains incentive fees
Related Party Transaction [Line Items]
Incentive fee	0	0	0	0
Incentive fee payable	$ 0	$ 0	$ 0	$ 0

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Amount of expense for incentive fee based on performance under arrangement to manage operations, including, but not limited to, investment.

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