Annual report pursuant to Section 13 and 15(d)

MANDATORILY REDEEMABLE PREFERRED STOCK - Narrative (Details)

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MANDATORILY REDEEMABLE PREFERRED STOCK - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Aug. 31, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dividends Payable [Line Items]        
Investment company, cash distributions paid to common stockholders from ordinary income     61.20% 71.30%
Investment company, cash distributions paid to common stockholders from capital gains     38.80% 28.70%
Series E Term Preferred Stock        
Dividends Payable [Line Items]        
Preferred stock, dividend rate, percentage 6.375%      
Preferred stock, liquidation preference (in USD per share) $ 25.00      
Loss on extinguishment of debt $ 2.0      
Series D Term Preferred Stock        
Dividends Payable [Line Items]        
Preferred stock, dividend rate, percentage   6.25%    
Preferred stock, liquidation preference (in USD per share)   $ 25.00    
Loss on extinguishment of debt   $ 0.8