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Investments - Schedule of Fair Value Measurements of Assets (Details) - USD ($) | Mar. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2022
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | $ 192,203,281 | $ 220,111,329 |  |
Level 1 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 0 | 0 |  |
Level 2 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 0 | 0 |  |
Level 3 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 192,203,281 | 220,111,329 | $ 221,315,429 | $ 233,683,986
Senior Secured First Lien Debt Investments |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 161,098,158 | 196,370,955 |  |
Senior Secured First Lien Debt Investments | Level 1 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 0 | 0 |  |
Senior Secured First Lien Debt Investments | Level 2 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 0 | 0 |  |
Senior Secured First Lien Debt Investments | Level 3 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 161,098,158 | 196,370,955 | 200,423,277 | 214,858,036
Equity, Warrants and Other Investments |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 31,105,123 | 23,740,374 |  |
Equity, Warrants and Other Investments | Level 1 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 0 | 0 |  |
Equity, Warrants and Other Investments | Level 2 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | 0 | 0 |  |
Equity, Warrants and Other Investments | Level 3 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Investments at Fair Value | $ 31,105,123 | $ 23,740,374 | $ 20,892,152 | $ 18,825,950

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