Goodwill And Intangible Assets (Gross Intangible Assets And Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	Jul. 02, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Gross Carrying Amount	$ 188,061
Accumulated Amortization	(56,004)
Net carrying value of intangible assets	132,057	$ 135,778
Patents [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	5,399
Accumulated Amortization	(5,399)
Non-amortized intangibles (primarily trademarks and trade names) [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	39,148
Accumulated Amortization	0
Customer relationships [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	102,663
Accumulated Amortization	(35,732)
Backlog [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	7,350
Accumulated Amortization	(7,036)
Acquired Technology [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	28,227
Accumulated Amortization	(3,194)
Other [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	5,274
Accumulated Amortization	$ (4,643)