Goodwill And Intangible Assets (Schedule Of Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Historical Cost	$ 571,090	$ 529,008
Accumulated Amortization	(278,247)	(209,178)
Net	292,843	319,830
Trade Names [Member]
Historical Cost	127,254	117,753
Accumulated Amortization	(35,742)	(26,167)
Net	$ 91,512	$ 91,586
Weighted-Average Amortization Period, years	11 years 9 months 18 days	12 years
Patents And Patent Licenses [Member]
Historical Cost	$ 64,518	$ 64,258
Accumulated Amortization	(50,077)	(45,417)
Net	$ 14,441	$ 18,841
Weighted-Average Amortization Period, years	8 years 2 months 12 days	8 years 3 months 18 days
Customer Relationships [Member]
Historical Cost	$ 343,447	$ 313,909
Accumulated Amortization	(168,013)	(116,590)
Net	$ 175,434	$ 197,319
Weighted-Average Amortization Period, years	10 years 6 months	9 years 4 months 24 days
Other Purchased Intangibles [Member]
Historical Cost	$ 35,871	$ 33,088
Accumulated Amortization	(24,415)	(21,004)
Net	$ 11,456	$ 12,084
Weighted-Average Amortization Period, years	4 years 7 months 6 days	4 years 2 months 12 days