Annual report [Section 13 and 15(d), not S-K Item 405]

RELATED PARTY TRANSACTIONS - Summarizes of Main Street???s Purchases (Details)

v3.25.0.1
RELATED PARTY TRANSACTIONS - Summarizes of Main Street’s Purchases (Details)
Dec. 16, 2024
Aug. 16, 2023
USD ($)
Dec. 31, 2024
USD ($)
shares
Aug. 01, 2024
USD ($)
$ / shares
shares
May 01, 2024
USD ($)
$ / shares
shares
Jan. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
[2]
Oct. 31, 2023
USD ($)
$ / shares
shares
Sep. 25, 2023
USD ($)
$ / shares
shares
Aug. 01, 2023
USD ($)
$ / shares
shares
May 01, 2023
USD ($)
$ / shares
shares
May 02, 2022
USD ($)
$ / shares
shares
Related Party Transaction [Line Items]                        
Total Cost     $ 4,237,312,000 [1]       $ 3,725,960,000          
MSC Income                        
Related Party Transaction [Line Items]                        
Reverse stock split 0.5                      
MSC Income | Related Party                        
Related Party Transaction [Line Items]                        
Shares Purchased (in shares) | shares     1,085,111 125,314 157,629 157,035   237,944   174,271 127,877 47,349
Price per share (in dollars per share) | $ / shares       $ 15.96 $ 15.86 $ 15.92   $ 15.76   $ 15.78 $ 15.64 $ 15.84
Total Cost       $ 2,000,000 $ 2,500,000 $ 2,500,000   $ 3,750,000   $ 2,750,000 $ 2,000,000 $ 750,000
MSC Income | Dutch Auction | Related Party                        
Related Party Transaction [Line Items]                        
Shares Purchased (in shares) | shares                 57,692      
Price per share (in dollars per share) | $ / shares                 $ 13.00      
Total Cost                 $ 750,000      
Sale of stock, authorized consideration on transaction   $ 3,500,000                    
[1] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.
[2] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.