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Investments - Geographic Composition Of Investment At Fair Value (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 2,488,715 | [1] | $ 2,448,935
Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 1,315,630 |  | $ 1,209,063
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] |  |  |
Fair Value | $ 26,291 |  | $ 26,111
Australia | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 2.00% |  | 2.10%
Austria | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 6,026 |  | $ 6,697
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] |  |  |
Fair Value | $ 20,379 |  | $ 16,385
Belgium | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 1.50% |  | 1.40%
Canada | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 3,998 |  | $ 7,280
Canada | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.30% |  | 0.60%
Denmark | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 1,082 |  | $ 953
Denmark | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.10% |  | 0.10%
Finland | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 2,207 |  | $ 1,967
Finland | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.20% |  | 0.20%
France | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 137,072 |  | $ 133,682
France | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 10.40% |  | 11.10%
Germany | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 50,672 |  | $ 38,068
Germany | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 3.90% |  | 3.10%
Hong Kong | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 14,162 |  | $ 16,593
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 | 1.10% |  | 1.40%
Ireland | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 7,445 |  | $ 4,334
Ireland | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.60% |  | 0.40%
Luxembourg | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 1,839 |  | $ 1,759
Luxembourg | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.10% |  | 0.10%
Netherlands | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 41,260 |  | $ 35,194
Netherlands | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 3.10% |  | 2.90%
Panama | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 1,466 |  | $ 945
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] |  |  |
Fair Value | $ 4,980 |  | $ 4,955
Singapore | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.40% |  | 0.40%
Spain | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 4,777 |  | $ 4,189
Spain | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.40% |  | 0.30%
Sweden | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 4,519 |  | $ 4,371
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% |  | 0.40%
Switzerland | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 592 |  | $ 5,558
Switzerland | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 0.00% |  | 0.50%
United Kingdom | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 120,398 |  | $ 126,305
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 | 9.20% |  | 10.40%
USA | Jocassee Partners LLC |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Fair Value | $ 866,465 |  | $ 773,717
USA | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Percent of Total Portfolio | 65.80% |  | 64.00%
[1] | Fair value as a percentage of net assets.

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