Investments - Schedule of Geographic Composition of Investment at Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 2,449,272	$ 2,488,715
Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	1,095,308	1,330,526
Jocassee Partners LLC \| Investment, Excluding Short Term Investment, With Previous Commitment To Provide Financing
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 1,085,025	$ 1,315,630
Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	100.00%	100.00%
Australia \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 23,187	$ 26,291
Australia \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	2.10%	2.00%
Austria \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 5,695	$ 6,026
Austria \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.50%	0.50%
Belgium \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 20,741	$ 20,379
Belgium \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	1.90%	1.50%
Canada \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 590	$ 3,998
Canada \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.10%	0.30%
Denmark \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 0	$ 1,082
Denmark \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.00%	0.10%
Finland \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 0	$ 2,207
Finland \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.00%	0.20%
France \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 124,810	$ 137,072
France \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	11.50%	10.40%
Germany \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 35,691	$ 50,672
Germany \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	3.30%	3.90%
Hong Kong \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 14,843	$ 14,162
Hong Kong \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	1.40%	1.10%
Ireland \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 7,302	$ 7,445
Ireland \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.70%	0.60%
Luxembourg \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 2,128	$ 1,839
Luxembourg \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.20%	0.10%
Netherlands \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 39,504	$ 41,260
Netherlands \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	3.60%	3.10%
Panama \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 1,470	$ 1,466
Panama \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.10%	0.10%
Singapore \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 5,000	$ 4,980
Singapore \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.50%	0.40%
Spain \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 2,078	$ 4,777
Spain \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.20%	0.40%
Sweden \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 3,523	$ 4,519
Sweden \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.30%	0.30%
Switzerland \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 595	$ 592
Switzerland \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.10%	0.00%
United Kingdom \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 111,097	$ 120,398
United Kingdom \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	10.20%	9.20%
USA \| Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Total investments at fair value	$ 686,771	$ 866,465
USA \| Jocassee Partners LLC \| Percentage of Total Portfolio, at Fair Value \| Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	63.30%	65.80%