Contingencies (Tables)

12 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of warranty reserves

Changes in warranty reserves are as follows for the periods presented:

	Fiscal Year Ended September 30,
in thousands	2023		2022		2021
Balance at beginning of period	$	13,926	$	12,931	$	13,052
Warranty provision	9,672		13,093		11,827
Warranty expenditures	(10,552)		(12,098)		(11,948)
Balance at end of period	$	13,046	$	13,926	$	12,931