Restructuring and Related Charges (Details) $ in Thousands		3 Months Ended	9 Months Ended
	Oct. 29, 2018 segment	Jun. 30, 2020 USD ($) segment	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 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			$ 655	$ 710
Restructuring charges			7,703	10,840
Restructuring charges related to other initiatives			1,141	2,086
Write off charge and other non‑cash activity			(62)	(520)
Cash payments			(7,314)	(9,830)
Other adjustments			0	(76)
Restructuring reserve, end of the period		$ 1,044	1,044	1,644
Cost of Product Sales and Services
Restructuring Reserve [Roll Forward]
Restructuring charges			5,198	4,912
General and Administrative Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			2,310	4,929
Sales and Marketing Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			173	891
Research and Development Expense
Restructuring Reserve [Roll Forward]
Restructuring charges			22	108
Two-segment realignment
Restructuring Reserve [Roll Forward]
Restructuring charges			1,866	9,274
Post Memcor product line sale restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges			4,758	$ 0
Other Restructuring [Member] | Two-segment realignment
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		1,500	1,500
Other Restructuring [Member] | Post Memcor product line sale restructuring [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		5,000	5,000
Other Restructuring [Member] | Post Memcor product line sale restructuring [Member] | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 3,000	$ 3,000