v3.26.1
RELATED PARTY TRANSACTIONS - Narrative (Details)
 3 Months Ended 6 Months Ended
Apr. 29, 2026
day
Mar. 27, 2025
USD ($)
Feb. 20, 2025
Oct. 18, 2024
USD ($)
May 05, 2020
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Mar. 27, 2025
USD ($)
Jun. 30, 2026
USD ($)
member
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
Mar. 25, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
$ / shares
Related Party Transaction [Line Items]                          
Incentive fees           $ 5,125,000 $ 5,934,000   $ 10,473,000 $ 10,334,000      
Base management and incentive fees payable           13,768,000     13,768,000   $ 14,360,000    
Administrative service fees           649,000 498,000   1,131,000 904,000      
Administrative service fees payable           668,000     668,000   1,261,000    
Other general and administrative           507,000 624,000   1,271,000 1,302,000      
Other accrued expenses and liabilities           3,458,000     3,458,000   $ 5,150,000    
Directors’ fees and expenses           $ 200,000 $ 188,000   $ 387,000 $ 336,000      
Sale of stock, number of shares issued | shares           0 21,996,719   0 21,996,719      
Preferred stock, outstanding (in shares) | shares                       2,000,000  
Cumulative convertible preferred stock, shares issued upon conversion (in shares) | shares                       3,004,808  
Preferred stock, liquidation preference                       $ 50,000,000  
Net asset value per common share (in dollars per share) | $ / shares           $ 15.61 $ 16.43   $ 15.61 $ 16.43 $ 16.26 $ 16.64 $ 16.80
Preferred stock dividend           $ 0 $ 0 $ 826,000 $ 0 $ 826,000      
Payments for merger related costs   $ 5,000,000                      
Private placement                          
Related Party Transaction [Line Items]                          
Sale of stock, number of shares issued | shares         2,000,000                
Preferred stock, par value (in dollars per share) | $ / shares         $ 0.01                
Sale of stock, offering price (in dollars per share) | $ / shares         25                
Related Party                          
Related Party Transaction [Line Items]                          
Other general and administrative           198,000 201,000   404,000 383,000      
Other accrued expenses and liabilities           471,000     471,000   $ 333,000    
Independent Directors                          
Related Party Transaction [Line Items]                          
Other accrued expenses and liabilities           0     $ 0   $ 0    
Number of board members | member                 7        
Number of board members, independent trustees | member                 4        
Affiliated Entity | Private placement                          
Related Party Transaction [Line Items]                          
Preferred stock, par value (in dollars per share) | $ / shares         0.01                
Sale of stock, offering price (in dollars per share) | $ / shares         $ 25                
Investment Advisory Agreement                          
Related Party Transaction [Line Items]                          
Agreement period 1 year                        
Termination notice, number of written days notice threshold | day 60                        
Investment Advisory Agreement | Related Party                          
Related Party Transaction [Line Items]                          
Net asset value multiplier     200.00%                    
Investment Advisory Agreement, First Two Fiscal Quarters | Related Party                          
Related Party Transaction [Line Items]                          
Base management fee rate     1.50%                    
Investment Advisory Agreement, Second Two Fiscal Quarters | Related Party                          
Related Party Transaction [Line Items]                          
Base management fee rate     1.00%                    
Quarterly Hurdle Rate | Related Party                          
Related Party Transaction [Line Items]                          
Incentive rate     1.50%                    
Annualized Hurdle Rate | Related Party                          
Related Party Transaction [Line Items]                          
Incentive rate     6.00%                    
Quarterly Catch-up Rate | Related Party                          
Related Party Transaction [Line Items]                          
Incentive rate     1.82%                    
Annualized Catch-up Rate | Related Party                          
Related Party Transaction [Line Items]                          
Incentive rate     7.28%                    
Pre-incentive Fee Net Investment Income, Below Catch-up Threshold | Related Party                          
Related Party Transaction [Line Items]                          
Incentive rate     100.00%                    
Pre-incentive Fee Net Investment Income, Exceeds Catch-up Threshold | Related Party                          
Related Party Transaction [Line Items]                          
Incentive rate     17.50%                    
Investment Advisory Agreement - Incentive Rate, Realized Capital Gains | Related Party                          
Related Party Transaction [Line Items]                          
Incentive rate     17.50%                    
Investment Advisory Agreement - Incentive Rate, Total Capital Gains                          
Related Party Transaction [Line Items]                          
Incentive fees           $ 0 $ 0   $ 0 $ 0      
Administration Agreement                          
Related Party Transaction [Line Items]                          
Agreement period 1 year                        
Termination notice, number of written days notice threshold | day 60                        
State Street Sub-Administration Agreement                          
Related Party Transaction [Line Items]                          
Agreement period 1 year                        
Termination notice, number of written days notice threshold | day 60                        
Underwriting Services, 2030 Notes | Affiliated Entity                          
Related Party Transaction [Line Items]                          
Management and service fees rate       1.00%                  
Payment for management fee       $ 9,000,000.0                  
CSL III Merger | Related Party                          
Related Party Transaction [Line Items]                          
Incentive fees   1,413,000                      
Reimbursable expense   $ 1,998,000