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Derivatives - Additional Information (Details) - USD ($) | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Derivative [Line Items] |  |
Cash collateral received or paid | $ 0 |
Foreign Currency Forward Contracts | USD |  |
Derivative [Line Items] |  |
Derivative, notional amount | $ 74,149,000 | $ 77,529,000

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