v3.25.4

Fair Value of Financial Instruments - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Net unrealized appreciation (depreciation) on investments and debt | $ 51,398 | $ 12,290 | $ (10,141)
Truist Credit Facility |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Line of credit facility amendment costs | 300 | 0 | 0
Net change in unrealized appreciation (depreciation) | (100) | (4,400) | (3,800)
Net unrealized appreciation (depreciation) on investments and debt | $ (1,000) | $ (1,100) | $ (5,500)

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