Restructuring and Related Charges (Details) $ in Thousands		3 Months Ended	6 Months Ended
	Oct. 29, 2018 segment	Mar. 31, 2022 USD ($) segment	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)
Restructuring Cost and Reserve [Line Items]
Number of reportable segments | segment	3	2	2
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of the period			$ 304	$ 970
Restructuring charges			2,802	5,531
Release of prior reserves			66	283
Write off charges			0	(966)
Cash payments			(2,220)	(4,359)
Other adjustments			2	9
Restructuring reserve, end of the period		$ 888	888	1,185
Cost of Product Sales and Services
Restructuring Reserve [Roll Forward]
Restructuring charges			867	3,428
General and Administrative Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			1,719	1,089
Sales and Marketing Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			0	340
Research and Development Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			1	(16)
Other Operating Income (Expense)
Restructuring Reserve [Roll Forward]
Restructuring charges			215	690
Post Memcor product line sale restructuring
Restructuring Reserve [Roll Forward]
Restructuring charges			754	3,808
Two-segment realignment
Restructuring Reserve [Roll Forward]
Restructuring charges			297	562
Other Restructuring
Restructuring Reserve [Roll Forward]
Restructuring charges			1,817	$ 1,444
Other Restructuring | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		100	100
Other Restructuring | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 1,100	$ 1,100