v3.25.4

Taxes and Distributions - Summary of Amounts Reclassified for Tax Purposes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Income Tax Disclosure [Abstract] |  |  |
Increase (Decrease) in paid-in capital | $ (3,462) | $ (2,800) | $ (1,703)
Increase (Decrease) in accumulated net realized gain | 68 | (11,993) | (1,494)
Increase in undistributed net investment income | $ 3,394 | $ 14,793 | $ 3,197

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