Annual report [Section 13 and 15(d), not S-K Item 405]

Net Increase (Decrease) in Net Assets Resulting from Operations Per Common Share - Schedule of Basic and Diluted Net Increase (Decrease) in Net Assets Resulting from Operations Per Common Share (Details)

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Net Increase (Decrease) in Net Assets Resulting from Operations Per Common Share - Schedule of Basic and Diluted Net Increase (Decrease) in Net Assets Resulting from Operations Per Common Share (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Per Share Data (1):          
Net increase (decrease) in net assets resulting from operations [1] $ (10,861,296) $ (178,900) $ 6,646,925    
Weighted average shares outstanding for year          
Basic 120,486,061 [1] 120,486,061 [1] 120,486,061 [1] 120,486,061 120,486,061
Diluted [1] 120,486,061 120,486,061 120,486,061    
Basic and diluted net increase (decrease) in net assets resulting from operations per common share          
Basic [1] $ (0.09) $ (0.001) $ 0.055    
Diluted [1] $ (0.09) $ (0.001) $ 0.055    
[1] Per share data based on weighted average shares outstanding.