v3.26.3
INVESTMENTS - Schedule of Geographic Composition of Investment at Fair Value (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Schedule of Investments [Line Items]    
Fair Value $ 2,509,771 $ 2,398,524
Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value 1,231,039 1,241,387
Jocassee Partners LLC | Investment, Excluding Short Term Investment, with Previous Commitment to Provide Financing    
Schedule of Investments [Line Items]    
Fair Value $ 1,157,364 $ 1,223,606
Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 100.00% 100.00%
Australia | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 19,849 $ 24,053
Australia | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 2.00% 2.00%
Austria | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 6,172 $ 6,459
Austria | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 1.00% 1.00%
Belgium | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 3,126 $ 20,645
Belgium | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 0.00% 2.00%
Canada | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 7,101 $ 2,081
Canada | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 1.00% 0.00%
France | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 91,938 $ 110,106
France | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 8.00% 9.00%
Germany | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 46,484 $ 47,823
Germany | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 4.00% 4.00%
Hong Kong | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 9,700 $ 15,000
Hong Kong | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 1.00% 1.00%
Ireland | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 8,421 $ 8,743
Ireland | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 1.00% 1.00%
Luxembourg | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 2,950 $ 3,340
Luxembourg | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 0.00% 0.00%
Netherlands | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 40,072 $ 49,546
Netherlands | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 3.00% 4.00%
Singapore | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 4,965 $ 4,950
Singapore | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 0.00% 0.00%
Spain | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 4,304 $ 3,167
Spain | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 0.00% 0.00%
United Kingdom | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 55,474 $ 111,148
United Kingdom | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 5.00% 9.00%
USA | Jocassee Partners LLC    
Schedule of Investments [Line Items]    
Fair Value $ 856,808 $ 816,545
USA | Jocassee Partners LLC | Percentage of Total Portfolio, at Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Percentage of Total Portfolio 74.00% 67.00%