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Significant Accounting Policies - Additional Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
Segment
Jun. 30, 2022
USD ($)
Change in Accounting Estimate [Line Items]        
Number of reportable segments | Segment     1  
Number of operating segments | Segment     1  
Percentage of excise tax 4.00%   4.00%  
Income tax examination, description     The Company’s tax returns are generally subject to examination by U.S. federal and most state tax authorities for a period of three years from the date the respective returns are filed, and, accordingly, the Company’s 2019 through 2021 tax years remain subject to examination.  
Tax year subject to examination     2019 2020 2021  
Maximum number of common stock purchasable under stock repurchase program | $ $ 5,000,000   $ 5,000,000  
Repurchase of common stock | $ $ 0 $ 0 $ 0 $ 0
Minimum        
Change in Accounting Estimate [Line Items]        
Percentage of voting securities     25.00%  
Percentage of board representation     50.00%  
Percentage of investment company taxable income 90.00%   90.00%  
Percentage of taxable income 98.00%   98.00%  
Percentage of net capital gains realized 98.20%   98.20%  
Minimum | Affiliate Investment        
Change in Accounting Estimate [Line Items]        
Percentage of voting securities     5.00%  
Maximum | Affiliate Investment        
Change in Accounting Estimate [Line Items]        
Percentage of voting securities     25.00%