v3.26.1
Borrowings - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Apr. 14, 2026
Dec. 02, 2025
Oct. 15, 2025
Mar. 27, 2025
Mar. 26, 2025
Jul. 22, 2024
Jul. 16, 2024
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Apr. 16, 2026
Apr. 15, 2026
Debt Instrument [Line Items]                        
Asset coverage ratio               206.85%   197.52%    
Asset coverage ratio, if certain conditions are met               150.00%        
Minimum required asset coverage ratio               150.00%        
Administration fee expense               $ 290,000 $ 168,000      
Minimum                        
Debt Instrument [Line Items]                        
Asset coverage ratio               200.00%        
Participation Agreement | Macquarie Bank Limited [Member]                        
Debt Instrument [Line Items]                        
Debt, weighted average annualized interest cost                 7.54%      
Debt Weighted Average, daily debt outstanding Payment                 $ 41,575,000      
Investment repurchase maximum settlement period           90 days            
Secured borrowing               $ 0   $ 0    
Secured Loan Facility [Member]                        
Debt Instrument [Line Items]                        
Maximum debt outstanding               445,000,000   445,000,000    
Maximum debt outstanding               $ 333,882,000   393,305,000    
Spread rate               3.66% 4.32%      
Secured Loan Facility [Member] | Subsidiary II                        
Debt Instrument [Line Items]                        
Maximum debt outstanding               $ 393,305,000 $ 263,100,000      
Maturity date             Jul. 16, 2029          
Interest rate on outstanding loans description             The interest rate on outstanding loans will be calculated by the 1-month SOFR rate plus a spread of 2.20%. Prior to March 27, 2025, the interest rate on outstanding loan was calculated by taking the highest of the Prime Rate, the Federal Funds Rate plus 0.50%, the 1-month SOFR rate plus 1.0% or zero, plus a spread of 2.60%.          
Spread rate         2.60%              
Upfront fee to be paid in installments       $ 750,000 $ 3,000,000              
Administration fee expense         $ 5,000              
Undrawn commitment threshold percentage             50.00%          
Debt, weighted average annualized interest cost               5.88% 6.92%      
Debt Weighted Average, daily debt outstanding Payment               $ 371,954,000 $ 186,233,000      
Secured Loan Facility [Member] | Subsidiary II | Federal Funds Rate                        
Debt Instrument [Line Items]                        
Spread rate         0.50%              
Secured Loan Facility [Member] | Subsidiary II | Secured Overnight Financing Rate (SOFR)                        
Debt Instrument [Line Items]                        
Spread rate     2.20%   1.00%              
Secured Loan Facility [Member] | Subsidiary II | Subsequent Event [Member]                        
Debt Instrument [Line Items]                        
Maximum debt outstanding                     $ 400,000,000 $ 445,000,000
Maturity date Jul. 15, 2026                      
Secured Loan Facility [Member] | Subsidiary II | Undrawn Commitment is Less than or Equal to 50% of Aggregate Commitment                        
Debt Instrument [Line Items]                        
Percentage of non-usage fee             0.50%          
Secured Loan Facility [Member] | Subsidiary II | Undrawn Commitment is Greater than 50% of Aggregate Commitment                        
Debt Instrument [Line Items]                        
Percentage of non-usage fee             1.00%          
Credit Facility [Member]                        
Debt Instrument [Line Items]                        
Maximum debt outstanding   $ 150,000,000           150,000,000   150,000,000    
Maximum debt outstanding               101,000,000   $ 88,000,000    
Line of Credit Facility, Maximum Borrowing Capacity Increased               $ 300,000,000        
Maturity date   Dec. 02, 2030                    
Spread rate   0.50%           3.66%        
Percentage of non-usage fee   0.375%                    
Debt, weighted average annualized interest cost               5.68%        
Debt Weighted Average, daily debt outstanding Payment               $ 96,733,000        
Amount of swingline loans   $ 50,000,000                    
Credit Facility [Member] | Secured Overnight Financing Rate (SOFR)                        
Debt Instrument [Line Items]                        
Spread rate   1.00%                    
Credit Facility [Member] | Permanent commitment maturing on December 3, 2029                        
Debt Instrument [Line Items]                        
Maximum debt outstanding   $ 75,000,000                    
Credit Facility [Member] | Temporary commitment maturing on December 2, 2026                        
Debt Instrument [Line Items]                        
Maximum debt outstanding   $ 75,000,000