Goodwill and Other Intangible Assets (Changes in Carrying Amount of Goodwill by Segment) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 270,172
Foreign currency translation adjustment	(3,735)
Goodwill, ending balance	266,437
Advanced Electronics Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	124,927
Foreign currency translation adjustment	(3,075)
Goodwill, ending balance	121,852
Elastomeric Material Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	143,021
Foreign currency translation adjustment	(660)
Goodwill, ending balance	142,361
Other
Goodwill [Roll Forward]
Goodwill, beginning balance	2,224
Foreign currency translation adjustment	0
Goodwill, ending balance	$ 2,224