v3.26.1
Borrowings - Additional Information (Details) - USD ($)
3 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
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Debt Instrument [Line Items]                      
Revolving credit facility                 $ 44,900,000   $ 58,900,000
Fee Paid on Undrawn Amounts         0.50%            
Maximum Borrowing Capacity                 3,600,000    
Total borrowings                 $ 109,900,000   58,900,000
Debt instrument, redemption price, percentage                 50.00%    
Unamortized discount                 $ 940,301   17,778
Weighted average outstanding debt                 $ 117,700,000 $ 121,900,000  
Weighted average outstanding debt balance rate                 5.49% 5.90%  
Minimum                      
Debt Instrument [Line Items]                      
Fee Paid on Undrawn Amounts         0.25%            
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                
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 March 31, 2026, the Company had availability to borrow $3.6 million based on the borrowing base.            
Accrued interest receivable                 1,000,000    
Total borrowings                 44,300,000   58,200,000
Issuance of debt                 600,000   700,000
Aggregate principal amount                 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   58,900,000
Capital One Revolving Finance | SPV LLC [Member]                      
Debt Instrument [Line Items]                      
Derivative, notional amount                 135,600,000   153,200,000
Investments at fair value                 125,800,000   141,800,000
Accrued interest receivable                     1,000,000
Cash held by trustee                 8,800,000   $ 10,400,000
Weighted average outstanding balance                 $ 52,700,000 $ 56,900,000  
Weighted average interest rate                 6.25% 6.93%  
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    
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                 $ 63,800,000    
Issuance of debt                 300,000    
Aggregate principal amount                 65,000,000    
Unamortized discount                 0.9    
2029 Notes [Member] | Level 3                      
Debt Instrument [Line Items]                      
Long-term debt, fair value                 $ 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%