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Fair Value of Financial Instruments - Additional Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Sep. 30, 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]      
Net change in unrealized depreciation on debt $ (62,000) $ 2,067,000  
Long-Term Credit Facility      
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]      
Line of credit facility amendment costs 0 0  
Net change in unrealized(depreciation ) appreciation on debt 100,000 $ (2,100,000)  
Prior Credit Facility      
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]      
Net change in unrealized depreciation on debt $ 100,000   $ 0