Goodwill And Intangible Assets (Gross Intangible Assets And Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	Mar. 29, 2020	Dec. 31, 2019
Intangible Assets [Line Items]
Gross Carrying Amount	$ 454,278
Accumulated Amortization	(159,935)
Finite-Lived Intangible Assets, Gross	294,343
Net carrying value of intangible assets	368,519	$ 385,542
Patents [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	5,368
Accumulated Amortization	(5,368)
Finite-Lived Intangible Assets, Net	0
Non-amortized intangibles (primarily trademarks and trade names) [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	74,176
Accumulated Amortization
Indefinite-Lived Intangible Assets Net of Impairment	74,176
Customer relationships
Intangible Assets [Line Items]
Gross Carrying Amount	293,607
Accumulated Amortization	(87,017)
Finite-Lived Intangible Assets, Net	206,590
Backlog [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	22,181
Accumulated Amortization	(20,497)
Finite-Lived Intangible Assets, Net	1,684
Acquired Technology [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	132,786
Accumulated Amortization	(46,717)
Finite-Lived Intangible Assets, Net	86,069
Other [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	336
Accumulated Amortization	(336)
Finite-Lived Intangible Assets, Net	$ 0