Contingencies - Warranty (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Standard product warranty length, minimum			1 year
Standard product warranty length, maximum			2 years
Limited product warranty length (up to)			10 years
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 13,073	$ 12,681	$ 13,926	$ 12,931
Accruals for warranties issued	3,298	2,842	8,783	8,025
Changes in liability related to warranties existing in prior periods	(134)	536	(1,681)	558
Payments made	(2,971)	(3,039)	(7,762)	(8,494)
Balance at end of period	$ 13,266	$ 13,020	$ 13,266	$ 13,020