Annual report pursuant to Section 13 and 15(d)

Consolidated Schedule of Investments In and Advances to Affiliates - Footnotes (Details)

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Consolidated Schedule of Investments In and Advances to Affiliates - Footnotes (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Investments [Line Items]      
Fair value $ 1,092,895 [1] $ 1,068,143 [2]  
Affiliate investments      
Schedule of Investments [Line Items]      
Fair value 291,279 [1],[3] 277,000 [2],[4] $ 234,158
Affiliate investments | Midwest      
Schedule of Investments [Line Items]      
Fair value $ 107,201 $ 92,945  
Net assets, percentage 17.20% 15.20%  
Affiliate investments | Northeast      
Schedule of Investments [Line Items]      
Fair value $ 38,466 $ 32,498  
Net assets, percentage 6.20% 5.30%  
Affiliate investments | Southeast      
Schedule of Investments [Line Items]      
Fair value $ 31,725 $ 40,053  
Net assets, percentage 5.10% 6.60%  
Affiliate investments | Southwest      
Schedule of Investments [Line Items]      
Fair value $ 86,332 $ 73,626  
Net assets, percentage 13.90% 12.10%  
Affiliate investments | West      
Schedule of Investments [Line Items]      
Fair value $ 27,555 $ 37,878  
Net assets, percentage 4.40% 6.20%  
Control investments      
Schedule of Investments [Line Items]      
Fair value $ 53,644 [1],[5] $ 50,303 [2],[6] $ 46,583
Control investments | Southwest      
Schedule of Investments [Line Items]      
Fair value $ 53,076 $ 49,715  
Net assets, percentage 8.50% 8.20%  
Control investments | West      
Schedule of Investments [Line Items]      
Fair value $ 568 $ 588  
Net assets, percentage 0.10% 0.10%  
[1] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments—Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par.
[2] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments—Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par.
[3] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments.
[4] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments.
[5] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.
[6] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.