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Borrowings - Additional Information (Details) - USD ($)
 6 Months Ended 12 Months Ended
Nov. 19, 2024
Jan. 17, 2024
Jun. 14, 2023
Nov. 18, 2022
Aug. 23, 2021
Mar. 31, 2021
Dec. 31, 2024
Dec. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Debt Instrument [Line Items]                    
Fee Paid on Undrawn Amounts       0.50%            
Total borrowings             $ 123,500,000   $ 108,000,000 $ 136,900,000
Debt Issuance Costs, Net, Total             1,369,415   1,654,870 1,220,556
Unamortized discount             88,888   $ 124,443 $ 195,553
Redeemed principal amount             $ 2,000      
Debt, weighted average interest rate             620.00%   644.00% 5.64%
Minimum                    
Debt Instrument [Line Items]                    
Fee Paid on Undrawn Amounts       0.25%            
Maximum                    
Debt Instrument [Line Items]                    
Fee Paid on Undrawn Amounts       75.00%            
Weighted Average                    
Debt Instrument [Line Items]                    
weighted average outstanding debt balance             $ 114,100,000   $ 128,700,000 $ 145,400,000
Capital One Revolving Finance                    
Debt Instrument [Line Items]                    
Borrowings interest rate spread (percent)       2.00%            
Debt instrument fee percentage       1.125%            
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 instrument, amendment date one     Jun. 14, 2023              
Debt instrument, amendment date two   Jan. 17, 2024                
Debt Instrument Maturity Expiration Date   Jan. 17, 2027                
Debt Outstanding Amount             58,500,000   43,000,000 71,900,000
Reinvestment period         3 years          
Amortization Period         2 years          
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.            
Accrued Interest Receivable             1,600,000   0 0
Debt Issuance Costs, Net, Total             1,000,000      
Aggregate principal amount             58,500,000      
Redeemed principal amount             57,500,000      
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 | Fair Value, Inputs, Level 3                    
Debt Instrument [Line Items]                    
Total borrowings             58,500,000   43,000,000 71,900,000
Capital One Revolving Finance | SPV LLC [Member]                    
Debt Instrument [Line Items]                    
Derivative, notional amount             167,700,000   167,700,000 194,000,000
Investments at Fair Value             154,700,000   153,400,000 181,500,000
Cash held by trustee             11,300,000   5,000,000 8,100,000
Weighted average outstanding balance             $ 49,100,000   $ 63,700,000 $ 80,400,000
Weighted average interest rate             7.99%   8.09% 5.95%
Capital One Revolving Finance | SOFR [Member]                    
Debt Instrument [Line Items]                    
Borrowings interest rate spread (percent)       3.10%            
Payment of an upfront fee       $ 1,300,000            
Capital One Revolving Finance | SOFR [Member] | Minimum                    
Debt Instrument [Line Items]                    
Borrowings interest rate spread (percent) 2.50%                  
Capital One Revolving Finance | SOFR [Member] | 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        
Debt instrument, interest rate during period             5.02%   5.29% 5.21%
Proceeds from initial public offering           $ 65,000,000        
Debt instrument interest rate           4.875% 4.875%      
Debt Issuance Costs, Net, Total             $ 325,000      
Unamortized discount             88,888      
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   $ 65,000,000 $ 65,000,000
Debt instrument, description of variable rate basis             (1) 100% of the principal amount of the 2026 Notes to be redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest (exclusive of accrued and unpaid interest to the date of redemption) on the 2026 Notes to be redeemed, discounted to the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) using the applicable Treasury Rate plus 50 basis points; provided      
Debt instrument, redemption price, percentage             100.00%      
Redeemed principal amount             $ 64,600,000 $ 64,800,000 64,900,000  
2026 Notes [Member] | Minimum                    
Debt Instrument [Line Items]                    
Redemption notice period             30 days      
2026 Notes [Member] | Maximum                    
Debt Instrument [Line Items]                    
Redemption notice period             60 days      
2026 Notes [Member] | Fair Value, Inputs, Level 3                    
Debt Instrument [Line Items]                    
Long-term debt, fair value             $ 63,200,000   $ 59,900,000 $ 58,200,000