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Investments - Schedule of Fair Value Measurements of Assets (Details) - USD ($)	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 221,315,429	$ 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	221,315,429	233,683,986	$ 242,033,310	$ 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	200,423,277	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	200,423,277	214,858,036	222,136,575	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	20,892,152	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	$ 20,892,152	$ 18,825,950	$ 19,896,735	$ 9,264,002

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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