v3.26.1
OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Amounts Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Tax $ (62,997) $ (86,497) $ (77,944)
Net income 51,110 209,897 77,617
AOCI attributable to parent | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income before taxes from continuing operations (2,463) (2,400) (2,773)
Tax 517 504 582
Net income (1,946) (1,896) (2,191)
Pension amortization | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income before taxes from continuing operations (1,489) (464) (460)
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income before taxes from continuing operations $ (974) $ (1,936) $ (2,313)