v3.26.1
Borrowings - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 30, 2026
Mar. 29, 2026
Nov. 10, 2025
Nov. 19, 2024
Jan. 17, 2024
Jun. 14, 2023
Aug. 23, 2021
Mar. 31, 2021
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
May 06, 2026
Debt Instrument [Line Items]                            
Revolving credit facility                 $ 44,900,000   $ 44,900,000   $ 58,900,000  
Fee Paid on Undrawn Amounts         0.50%                  
Maximum Borrowing Capacity                 4,000,000   4,000,000      
Total borrowings                 109,900,000   $ 109,900,000   58,900,000  
Debt instrument, redemption price, percentage                     50.00%      
Unamortized discount                 1,107,452   $ 1,107,452   17,778  
Weighted average outstanding debt                 $ 109,900,000 $ 123,000,000 $ 113,800,000      
Weighted average outstanding debt balance rate                 7.98% 5.79% 7.94% 5.81%    
Minimum                            
Debt Instrument [Line Items]                            
Fee Paid on Undrawn Amounts         0.25%                  
Weighted average outstanding debt                       $ 122,400,000    
Maximum                            
Debt Instrument [Line Items]                            
Fee Paid on Undrawn Amounts         75.00%                  
ICAP                            
Debt Instrument [Line Items]                            
Upfront fee percentage     0.50%                      
Notes payable, Description     the Company paid ICAP a fee in an amount equal to the sum of (i) the upfront fee of 0.50% of principal amount and (ii) an ongoing fee of 1.00% of principal amount per annum during the period from November 10, 2025 until April 1, 2026, pro-rated for any period of less than one year. On March 30, 2026, the Company issued $65.0 million in aggregate principal amount of Floating Rate Senior Unsecured Notes due 2029. The Company used the proceeds from that issuance to fully repay the 2026 Notes on March 30, 2026.                      
Notes principle amount     $ 65,000,000                      
Sixth Amendment [Member] | Prior Facility Size [ Member]                            
Debt Instrument [Line Items]                            
Secured revolving credit facility                           $ 100,000,000
Sixth Amendment [Member] | Current Facility Size [ Member]                            
Debt Instrument [Line Items]                            
Secured revolving credit facility                           $ 50,000,000
Capital One Revolving Finance                            
Debt Instrument [Line Items]                            
Debt Instrument Maturity Expiration Date         Jan. 17, 2027                  
Borrowings interest rate spread (percent)         2.00%                  
Debt instrument, maturity date         Jan. 17, 2029                  
Fee Paid on Undrawn Amounts         0.75%                  
Secured revolving credit facility           $ 100,000,000 $ 115,000,000              
Debt outstanding amount                     $ 44,900,000   58,900,000  
Reinvestment period             3 years              
Amortization period             2 years              
Debt instrument fee percentage         1.125%                  
Debt instrument, unused borrowing capacity, description         The Capital One Revolving Financing required the payment of an upfront fee of 1.125% ($1.3 million) of the available borrowings under the Capital One Revolving Financing at the closing, and requires the payment of an unused fee of (i) 0.75% annually for any undrawn amounts below 50% of the Capital One Revolving Financing, (ii) 0.50% annually for any undrawn amounts between 50% and 75% of the Capital One Revolving Financing, and (iii) 0.25% annually for any undrawn amounts above 75% of the Capital One Revolving Financing. Borrowings under the Capital One Revolving Financing are based on a borrowing base. As of June 30, 2026, the Company had availability to borrow $4.0 million based on the borrowing base.                  
Accrued interest receivable                 $ 800,000   800,000      
Total borrowings                 44,500,000   44,500,000   58,200,000  
Issuance of debt                     400,000   700,000  
Aggregate principal amount                 44,900,000   44,900,000   58,900,000  
Debt instrument, amendment date one           Jun. 14, 2023                
Debt instrument, amendment date two         Jan. 17, 2024                  
Capital One Revolving Finance | Minimum                            
Debt Instrument [Line Items]                            
Fee Paid on Undrawn Amounts         50.00%                  
Capital One Revolving Finance | Maximum                            
Debt Instrument [Line Items]                            
Fee Paid on Undrawn Amounts         75.00%                  
Capital One Revolving Finance | Level 3                            
Debt Instrument [Line Items]                            
Total borrowings                 44,900,000   44,900,000   58,900,000  
Capital One Revolving Finance | SPV LLC [Member]                            
Debt Instrument [Line Items]                            
Derivative, notional amount                 119,500,000   119,500,000   153,200,000  
Investments at fair value                 108,800,000   108,800,000   141,800,000  
Accrued interest receivable                         1,000,000  
Cash held by trustee                 9,900,000   9,900,000   $ 10,400,000  
Weighted average outstanding balance                 $ 44,900,000 $ 58,000,000 $ 48,800,000 $ 57,400,000    
Weighted average interest rate                 6.17% 6.81% 6.22% 6.87%    
Capital One Revolving Finance | SOFR                            
Debt Instrument [Line Items]                            
Borrowings interest rate spread (percent)         3.10%                  
Payment of an upfront fee         $ 1,300,000                  
Capital One Revolving Finance | SOFR | Minimum                            
Debt Instrument [Line Items]                            
Borrowings interest rate spread (percent)       2.50%                    
Capital One Revolving Finance | SOFR | Maximum                            
Debt Instrument [Line Items]                            
Borrowings interest rate spread (percent)       3.10%                    
2026 Notes [Member]                            
Debt Instrument [Line Items]                            
Debt instrument, maturity date                     Apr. 01, 2026      
Total borrowings                 $ 0   $ 0      
Proceeds from initial public offering               $ 65,000,000            
Debt instrument interest rate     4.875%         4.875%            
Payments for underwriting expense               $ 1,300,000            
Proceeds from sale of notes               63,100,000            
Offering expense               $ 215,000            
Aggregate principal amount $ 65,000,000                          
Debt instrument, interest rate, stated percentage     4.875%         4.875%            
2029 Notes [Member]                            
Debt Instrument [Line Items]                            
Total borrowings                 63,700,000   63,700,000      
Issuance of debt                     200,000      
Aggregate principal amount                 65,000,000   65,000,000      
Unamortized discount                 1,100,000   1,100,000      
2029 Notes [Member] | Level 3                            
Debt Instrument [Line Items]                            
Long-term debt, fair value                 $ 64,400,000   $ 64,400,000      
Senior Unsecured Notes due 2029                            
Debt Instrument [Line Items]                            
Debt instrument, maturity date   Jul. 01, 2029                        
Subsidiaries excess amount   $ 25,000,000                        
Investment company asset coverage ratio   125.00%                        
Cash paid for issuance and sale of debt $ 650,000                          
Aggregate principal amount   $ 65,000,000                        
Debt instrument, redemption price, percentage   50.00%                        
Investments fair value percentage   10.00%                        
Senior Unsecured Notes due 2029 | SOFR                            
Debt Instrument [Line Items]                            
Debt instrument, interest rate during period   5.50%