v3.25.2
Goodwill and Other Intangible Assets - Summary of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets by Major Class (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Sep. 30, 2024
Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 200,846 $ 198,701
Accumulated Amortization (200,846) (196,995)
Net Carrying Amount 0 1,706
Customer relationships    
Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount 110,259 108,659
Accumulated Amortization (110,259) (106,953)
Net Carrying Amount 0 $ 1,706
Weighted Average Remaining Life (Years)   6 months
Technology and patents    
Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount 90,587 $ 90,042
Accumulated Amortization (90,587) (90,042)
Net Carrying Amount $ 0 $ 0