Restructuring and Related Charges (Details) $ in Thousands		3 Months Ended
	Oct. 29, 2018 segment	Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Number of reportable segments | segment	3	2
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of the period		$ 970	$ 655
Restructuring charges		1,166	867
Cash payments		(986)	(1,156)
Restructuring Reserve, Translation and Other Adjustment		92	(1)
Other adjustments		9	53
Restructuring reserve, end of the period		1,121	365
Write off charges		(121)	0
Cost of Product Sales and Services
Restructuring Reserve [Roll Forward]
Restructuring charges		826	384
General and Administrative Expense
Restructuring Reserve [Roll Forward]
Restructuring charges		138	480
Sales and Marketing Expense
Restructuring Reserve [Roll Forward]
Restructuring charges		218	3
Research and Development Expense
Restructuring Reserve [Roll Forward]
Restructuring charges		(16)	0
Two-segment realignment
Restructuring Reserve [Roll Forward]
Restructuring charges		238	675
Post Memcor product line sale restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges		908	0
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges		29	$ 245
Other Restructuring [Member] | Two-segment realignment
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		1,000
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
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
Other Restructuring [Member] | ISS restructuring [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		1,700
Other Restructuring [Member] | ISS restructuring [Member] | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 1,300