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Significant Accounting Policies - Schedule of Distributable Earnings on Tax Basis (Details) - USD ($)	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Accounting Policies [Abstract]
Undistributed net investment income	$ 11,648,379	$ 9,342,951	$ 8,587,905
Accumulated capital gains (losses) and other	(27,970,779)	(15,703,257)	(6,846,521)
Capital loss carryover	(73,713,555)	(57,692,925)	(52,026,948)
Unrealized appreciation (depreciation)	(23,015,323)	(43,884,017)	(51,942,136)
Distributions payable	(2,590,520)	(2,157,872)	(2,088,265)
Distributable earnings (loss)	$ (115,641,798)	$ (110,095,120)	$ (104,315,965)

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