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Derivative Financial Instruments - Schedule of Derivative Financial Instruments at Gross Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Designated as Hedging Instrument | Forward Contracts |  |  |
Derivative [Line Items] |  |  |
Gross Amount of Recognized Assets | [1] | $ 2,871 | $ 181
Gross Amount of Recognized Liabilities | [2] | 0 | 630
Designated as Hedging Instrument | Option contracts |  |  |
Derivative [Line Items] |  |  |
Gross Amount of Recognized Assets |  | 0 | 0
Not Designated as Hedging Instrument | Forward Contracts |  |  |
Derivative [Line Items] |  |  |
Fair Value of Derivatives Not Designated As Hedging Instruments | [1] | 3,136 | 1,021
Fair Value of Derivatives Not Designated As Hedging Instruments | [2] | 4,773 | 3,536
Not Designated as Hedging Instrument | Option contracts |  |  |
Derivative [Line Items] |  |  |
Fair Value of Derivatives Not Designated As Hedging Instruments |  | $ 6,228 | $ 0
[1] | As of September 30, 2025 and 2024, current derivative assets are recorded in Other current assets on the Consolidated Balance Sheets.
[2] | As of September 30, 2025 and 2024, current derivative liabilities are recorded in Accrued expenses and other current liabilities on the Consolidated Balance Sheets.

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