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Investments - Schedule of Fair Value Measurements of Assets (Details) - USD ($) | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Investments at Fair Value | $ 220,111,329 | $ 233,683,986 |
Fair Value, Inputs, Level 3 |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Investments at Fair Value | 220,111,329 | 233,683,986 | $ 245,855,620
Senior Secured First Lien Debt Investments |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Investments at Fair Value | 196,370,955 | 214,858,036 |
Senior Secured First Lien Debt Investments | Fair Value, Inputs, Level 3 |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Investments at Fair Value | 196,370,955 | 214,858,036 | 230,351,618
Senior Secured Second Lien Debt Investments | Fair Value, Inputs, Level 3 |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Investments at Fair Value |  |  | 6,240,000
Equity, Warrants and Other Investments |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Investments at Fair Value | 23,740,374 | 18,825,950 |
Equity, Warrants and Other Investments | Fair Value, Inputs, Level 3 |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Investments at Fair Value | $ 23,740,374 | $ 18,825,950 | $ 9,264,002

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