Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill by Segment) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Goodwill [Roll Forward]
December 31, 2015	$ 175,453
Foreign currency translation adjustment	2,876
September 30, 2016	178,329
Advanced Connectivity Solutions
Goodwill [Roll Forward]
December 31, 2015	51,931
Foreign currency translation adjustment	0
September 30, 2016	51,931
Elastomeric Material Solutions
Goodwill [Roll Forward]
December 31, 2015	56,269
Foreign currency translation adjustment	1,013
September 30, 2016	57,282
Power Electronics Solutions
Goodwill [Roll Forward]
December 31, 2015	65,029
Foreign currency translation adjustment	1,863
September 30, 2016	66,892
Other
Goodwill [Roll Forward]
December 31, 2015	2,224
Foreign currency translation adjustment	0
September 30, 2016	$ 2,224