Goodwill and Other Intangible Assets (Changes in Carrying Amount of Goodwill by Segment) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 270,172
Foreign currency translation adjustment	(5,387)
Goodwill, ending balance	264,785
Advanced Electronics Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	124,927
Foreign currency translation adjustment	(4,035)
Goodwill, ending balance	120,892
Elastomeric Material Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	143,021
Foreign currency translation adjustment	(1,352)
Goodwill, ending balance	141,669
Other
Goodwill [Roll Forward]
Goodwill, beginning balance	2,224
Foreign currency translation adjustment	0
Goodwill, ending balance	$ 2,224