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FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights, Additional Information (Details) - $ / shares
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Investment Company, Financial Highlights [Line Items]        
Additional dividends declared (in dollars per share)   $ 0.06    
Per share market value at end of period (in dollars per share) $ 18.79 17.93 $ 18.47 $ 21.19
Total distributions to stockholders (in dollars per share) $ 0.96 $ 0.90    
Ratio of operating expenses to average net assets 12.37% 9.67%    
Base management fees        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 3.19% 3.25%    
Income based fees and capital gains incentive fees        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 3.08% 1.76%    
Cost of borrowing        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 5.67% 4.25%    
Other operating expenses        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 0.43% 0.41%