Derivative and Hedging Instruments - Balance Sheet Location (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net asset (liability)	$ (555)	$ (2,066)
Prepaid expenses and other current assets
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets	1,389	1,560
Other long-term liabilities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative liabilities	$ (1,944)	$ (3,626)