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Earnings (Losses) Per Share - Schedule of Basic and Diluted Net Increase (Decrease) In Net Assets Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
 [1]
Dec. 31, 2020
 [1]
Earnings Per Share [Abstract]                          
Net Income (Loss) $ (2,540) $ (1,509) $ (6,372) $ 4,486 $ 6,995 $ 7,445 $ (3,114) $ 55 $ (5,935) $ 11,381 $ (20,996)    
Weighted average common stock outstanding - basic                 9,272,809 9,509,396 9,634,468    
Weighted average common stock outstanding - diluted                 9,272,809 9,509,396 9,634,468    
Net increase (decrease) in net assets per share from operations - basic $ (0.28) $ (0.16) $ (0.69) $ 0.48 $ 0.74 $ 0.78 $ (0.33) $ 0.01 $ (0.64) [1] $ 1.2 [1] $ (2.18) [1] $ 3.05 $ 6.32
Net increase (decrease) in net assets per share from operations - diluted $ (0.28) $ (0.16) $ (0.69) $ 0.48 $ 0.74 $ 0.78 $ (0.33) $ 0.01 $ (0.64) $ 1.2 $ (2.18)    
[1] Totals may not sum due to rounding.