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Significant Accounting Policies - Additional Information (Details)
 3 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Interest income $ 174,454 $ 155,038  
Number of loans on non-accrual status | Loans     6
Percentage of portfolio at fair value 10.62%   4.08%
Investment company taxable income 90.00%    
Percentage of net ordinary income 98.00%    
Percentage of capital gain 98.20%    
Excise tax $ 100,747 44,330  
Distributions 2,158,926 2,158,042  
Short-term capital loss carryforward, net     $ 1,971,187
Long-term capital loss carryforward, net     71,742,368
Short-term capital loss deferral     41,242
Long-term capital loss deferral     $ 27,178,811
Equity investments      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Payment in kind, interest received 188,251 166,449  
Debt investments      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Payment in kind, interest received $ 100,181 $ 181,738