Quarterly report pursuant to Section 13 or 15(d)

BORROWINGS - Revolving Line of Credit Narrative (Details)

v3.23.2
BORROWINGS - Revolving Line of Credit Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Apr. 10, 2023
Mar. 08, 2021
Aug. 10, 2020
Jun. 30, 2023
Mar. 31, 2023
Debt Instrument [Line Items]          
Indebtedness asset coverage on our senior securities       211.00% 244.70%
Line of Credit | Revolving Line of Credit          
Debt Instrument [Line Items]          
Unused fee percentage         1.00%
Credit Facility          
Debt Instrument [Line Items]          
Term   2 years      
Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Unused fee percentage       1.00%  
Credit Facility | Line of Credit | Revolving Line of Credit          
Debt Instrument [Line Items]          
Covenant, required minimum net worth of mandatory redeemable term preferred stock       $ 210.0  
Covenant, required minimum net worth of mandatory redeemable term preferred stock, plus percent of all equity and subordinated debt raised       50.00%  
Covenant, required minimum net worth of mandatory redeemable term preferred stock, minus percent of any equity or subordinated debt redeemed or retired       50.00%  
Covenant, required minimum net worth of mandatory redeemable term preferred stock, plus percent of all equity and subordinated debt raised, minus percent of any equity or subordinated debt redeemed or retired       $ 326.4  
Indebtedness asset coverage on our senior securities       211.00%  
Senior security, indebtedness, asset coverage amount       $ 766.1  
Credit Facility | Line of Credit | Revolving Line of Credit | Minimum          
Debt Instrument [Line Items]          
Indebtedness asset coverage on our senior securities       150.00%  
Credit Facility | Line of Credit | Revolving Line of Credit | Less than or Equal to 50% of Commitment          
Debt Instrument [Line Items]          
Unused fee percentage     0.50%    
Credit Facility | Line of Credit | Revolving Line of Credit | Greater Than 50% But Less Than or Equal to 65% of Commitment          
Debt Instrument [Line Items]          
Unused fee percentage     0.75%    
Credit Facility | Line of Credit | Revolving Line of Credit | Greater Than 65% Of Commitment          
Debt Instrument [Line Items]          
Unused fee percentage     1.00%    
Credit Facility | Secured Overnight Financing Rate (SOFR) | Line of Credit | Revolving Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.11%   0.11% 3.10%  
Debt instrument, variable rate floor     0.35% 0.35% 0.50%
Credit Facility | SOFR, Tranche One | Line of Credit | Revolving Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate     2.85%    
Credit Facility | SOFR, Tranche Two | Line of Credit | Revolving Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate     3.10%    
Credit Facility | SOFR, Thereafter | Line of Credit | Revolving Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate     3.35%    
Credit Facility | LIBOR | Line of Credit | Revolving Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate         2.94%