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Investments - Geographic Composition Of Investment At Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Summary of Investment Holdings [Line Items]
Fair Value		$ 2,448,935	$ 1,800,594
Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 1,209,063	1,245,647
Jocassee Partners LLC | Investment Owned, 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]
Fair Value		$ 26,111	16,509
Australia | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	1.30%	2.10%
Austria | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 6,697	1,115
Austria | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.10%	0.50%
Belgium | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 16,385	14,814
Belgium | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	1.20%	1.40%
Canada | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 7,280	8,507
Canada | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.70%	0.60%
Denmark | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 953	6,960
Denmark | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.60%	0.10%
Finland | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 1,967	47,992
Finland | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	3.80%	0.20%
France | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 133,682	3,391
France | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.30%	11.10%
Germany | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 38,068	6,357
Germany | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.50%	3.10%
Hong Kong | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 16,593	2,272
Hong Kong | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.20%	1.40%
Ireland | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 4,334	123,816
Ireland | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	9.90%	0.40%
Italy | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 0	113,896
Italy | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	9.10%	0.00%
Luxembourg | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 1,759	4,766
Luxembourg | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.40%	0.10%
Netherlands | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 35,194	3,744
Netherlands | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.30%	2.90%
Panama | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 945	0
Panama | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.00%	0.10%
Singapore | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 4,955	0
Singapore | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.00%	0.40%
Spain | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 4,189	1,225
Spain | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.10%	0.30%
Sweden | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 4,371	32,150
Sweden | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	2.60%	0.40%
Switzerland | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 5,558	965
Switzerland | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.10%	0.50%
United Kingdom | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 126,305	5,305
United Kingdom | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	0.40%	10.40%
USA | Jocassee Partners LLC
Summary of Investment Holdings [Line Items]
Fair Value		$ 773,717	$ 851,863
USA | Jocassee Partners LLC | Investment Owned, At Fair Value | Geographic Concentration Risk
Summary of Investment Holdings [Line Items]
Percent of Total Portfolio	68.40%	64.00%

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