Goodwill And Other Intangible Assets (Gross Intangible Assets And Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 183,497	$ 88,127
Impairment Charges	(208)	(460)
Accumulated Amortization	(47,510)	(38,686)
Net carrying value of intangible assets	135,779	48,981
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,399	6,039
Impairment Charges	(208)	0
Accumulated Amortization	(5,176)	(5,765)
Net carrying value of intangible assets	15	274
Trademarks And Trade Names (Non-Amortizing) [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment Charges	0	(460)
Gross Carrying Amount	38,235	15,802
Accumulated Amortization	0	0
Indefinite-Lived Intangible Assets Net of Impairment	38,235	15,342
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	99,769	53,238
Impairment Charges	0	0
Accumulated Amortization	(30,100)	(24,029)
Net carrying value of intangible assets	69,669	29,209
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,955	5,120
Impairment Charges	0	0
Accumulated Amortization	(6,336)	(3,893)
Net carrying value of intangible assets	619	1,227
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,044	2,317
Accumulated Amortization	(1,512)	(427)
Net carrying value of intangible assets	26,532	1,890
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,095	5,611
Impairment Charges	0	0
Accumulated Amortization	(4,386)	(4,572)
Net carrying value of intangible assets	$ 709	$ 1,039