Goodwill And Intangible Assets (Gross Intangible Assets And Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Gross Carrying Amount	$ 190,466
Accumulated Amortization	(60,414)
Net carrying value of intangible assets	130,052	$ 135,778
Patents [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	5,400
Accumulated Amortization	(5,400)
Non-amortized intangibles (primarily trademarks and trade names) [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	39,617
Accumulated Amortization	0
Customer relationships [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	104,218
Accumulated Amortization	(38,757)
Backlog [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	7,534
Accumulated Amortization	(7,376)
Acquired Technology [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	28,305
Accumulated Amortization	(4,044)
Other [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	5,392
Accumulated Amortization	$ (4,837)