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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
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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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