Quarterly report pursuant to Section 13 or 15(d)

RELATED PARTY TRANSACTIONS (Details)

v3.23.2
RELATED PARTY TRANSACTIONS (Details)
 3 Months Ended 6 Months Ended
May 01, 2023
USD ($)
$ / shares
shares
May 02, 2022
USD ($)
$ / shares
shares
Oct. 30, 2020
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Oct. 30, 2021
component
Related Party Transaction [Line Items]                  
Services expenses       $ 4,912,000 $ 4,955,000 $ 9,767,000 $ 9,945,000    
Waiver of internal administrative services expenses       2,394,000 1,149,000 4,283,000 2,179,000    
Accounts payable and other liabilities       326,000   326,000   $ 1,292,000  
Related Party | MSC Income | Advisory Agreement                  
Related Party Transaction [Line Items]                  
Base fee rate     1.75%            
Number of components related to incentive fee | component                 2
Related Party | MSC Income | Advisory Agreement, Incentive Rate, Pre-Incentive Fee Net Investment Income                  
Related Party Transaction [Line Items]                  
Incentive fee rate     20.00%            
Related Party | MSC Income | Advisory Agreement - Incentive Rate, Quarterly Hurdle Rate                  
Related Party Transaction [Line Items]                  
Incentive fee rate     1.875%            
Related Party | MSC Income | Advisory Agreement - Incentive Rate, Annualized Hurdle Rate                  
Related Party Transaction [Line Items]                  
Incentive fee rate     7.50%            
Related Party | MSC Income | Advisory Agreement, Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold                  
Related Party Transaction [Line Items]                  
Incentive fee rate     100.00%            
Related Party | MSC Income | Advisory Agreement - Incentive Rate, Quarterly Catch-Up Threshold                  
Related Party Transaction [Line Items]                  
Incentive fee rate     2.34375%            
Related Party | MSC Income | Advisory Agreement - Incentive Rate, Annualized Catch-Up Threshold                  
Related Party Transaction [Line Items]                  
Incentive fee rate     9.375%            
Related Party | MSC Income | Advisory Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold                  
Related Party Transaction [Line Items]                  
Incentive fee rate     20.00%            
Related Party | MSC Income | Advisory Agreement - Base Management Fees                  
Related Party Transaction [Line Items]                  
Services expenses       4,900,000 5,000,000 9,800,000 9,900,000    
Related Party | MSC Income | Advisory Agreement - Subordinated Incentive Fees                  
Related Party Transaction [Line Items]                  
Services expenses       3,600,000 0 6,300,000 0    
Related Party | MSC Income | Advisory Agreement - Incentive Fees, Capital Gains Fees                  
Related Party Transaction [Line Items]                  
Services expenses         0 0 0    
Related Party | MSC Income | Advisory Agreement - Internal Administrative Services                  
Related Party Transaction [Line Items]                  
Services expenses       2,500,000 1,300,000 4,600,000 2,500,000    
Waiver of internal administrative services expenses       2,400,000 1,100,000 $ 4,300,000 2,200,000    
Related Party | MSC Income - HMS Adviser | Offering Costs                  
Related Party Transaction [Line Items]                  
Percentage of payment of offering costs           1.50%      
Accounts payable and other liabilities       600,000   $ 600,000      
Fee paid indirectly       $ 60,000.00 $ 80,000.00 $ 130,000 $ 140,000    
Related Party | Main Street | Dividend Reinvestment Plan                  
Related Party Transaction [Line Items]                  
Sale of stock, number of shares (in shares) | shares 255,754 94,697              
Sale of stock, price per share (in dollars per share) | $ / shares $ 7.82 $ 7.92              
Sale of stock, proceeds $ 2,000,000 $ 750,000