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Contingencies - Schedule of Warranty Reserves (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Movement in Standard Product Warranty Accrual [Roll Forward]        
Balance at beginning of period $ 11,900 $ 12,005 $ 13,564 $ 12,717
Warranty provision 1,702 1,552 3,500 3,245
Warranty expenditures (2,400) (2,003) (5,862) (4,408)
Balance at end of period $ 11,202 $ 11,554 $ 11,202 $ 11,554