Federal Income Tax Matters - Schedule of Accumulated Earnings (Deficit) Book Basis, Income Tax (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Schedule of Investments [Abstract]
Undistributed ordinary income – tax basis	$ 0	$ 0	$ 1,699
Undistributed realized gains – tax basis	458	603	20
Net unrealized appreciation (depreciation) on investments	21,029	16,084	2,408
Other temporary differences	(21,112)	(16,381)	(3,980)
Total accumulated earnings (loss) – book basis	$ 375	$ 306	$ 147

Investment Company, Distributable Earnings (Loss), Accumulated Other Temporary Differences

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- Definition

Amount of accumulated undistributed earnings (deficit) from unrealized appreciation (depreciation) of investment company.

+ References

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- Definition

Amount of accumulated undistributed earnings (deficit) from long-term capital gain (loss) of investment company.

+ References

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- Definition

Amount of accumulated undistributed earnings (deficit) from ordinary income (loss) of investment company.

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- Definition

Amount of accumulated undistributed earnings (deficit).

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- References

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