Investments - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) Member	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Investment Holdings [Line Items]
Fair Value	$ 428,978		$ 428,978		$ 467,865
Unfunded commitment to investee	31,656		31,656		28,566
Level II
Investment Holdings [Line Items]
Fair Value	38,500		38,500		65,300
Joint venture
Investment Holdings [Line Items]
Investment income from investments in joint ventures	1,700	$ 2,100	5,100	$ 6,900
Freedom 3 and Great Lakes Joint venture
Investment Holdings [Line Items]
Aggregate fair value of investments in joint venture	$ 52,300		$ 52,300		59,300
F3C Joint Venture
Investment Holdings [Line Items]
F3C Joint venture ownership percentage	62.80%		62.80%
Number of board of directors \| Member			4
Directors selected by company \| Member			2
Directors selected by Freedom 3 Opportunities \| Member			2
Fair Value	$ 13,000		$ 13,000		14,300
Series A-Great Lakes Funding II LLC
Investment Holdings [Line Items]
Percentage of voting interest	50.00%		50.00%
Fair Value	$ 39,300		$ 39,300		45,000
Unfunded commitment to investee	$ 11,200		$ 11,200		$ 5,500