Restructuring and Related Charges (Details) $ in Thousands		3 Months Ended	9 Months Ended
	Oct. 29, 2018 segment	Jun. 30, 2021 USD ($) segment	Jun. 30, 2021 USD ($) segment	Jun. 30, 2020 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			$ 970	$ 655
Restructuring charges			7,039	7,703
Cash payments			(6,349)	(7,314)
Restructuring Reserve, Translation and Other Adjustment			8	0
Other adjustments			296	62
Restructuring reserve, end of the period		$ 702	702	1,044
Write off charges			(966)	0
Cost of Product Sales and Services
Restructuring Reserve [Roll Forward]
Restructuring charges			4,341	5,198
General and Administrative Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			1,675	2,310
Sales and Marketing Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			348	173
Research and Development Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			(15)	22
Other Operating Income (Expense)
Restructuring Reserve [Roll Forward]
Restructuring charges			690	0
Two-segment realignment
Restructuring Reserve [Roll Forward]
Restructuring charges			830	1,866
Post Memcor product line sale restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges			4,649	4,758
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges			1,856	$ 1,141
Other Restructuring [Member] | Two-segment realignment | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		400	400
Other Restructuring [Member] | Two-segment realignment | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		200	200
Other Restructuring [Member] | Post Memcor product line sale restructuring [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		2,300	2,300
Other Restructuring [Member] | Post Memcor product line sale restructuring [Member] | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		1,300	1,300
Other Restructuring [Member] | ISS restructuring [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		1,400	1,400
Other Restructuring [Member] | ISS restructuring [Member] | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 1,000	$ 1,000