Goodwill And Other Intangible Assets (Gross Intangible Assets And Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 309,986	$ 364,109
Accumulated Amortization	(153,527)	(108,356)
Intangible Assets, Gross (Excluding Goodwill)	463,513	472,465
Intangible Assets, Net (Excluding Goodwill)	385,542	440,281
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,368	5,399
Accumulated Amortization	(5,368)	(5,399)
Net carrying value of intangible assets	0	0
Trademarks And Trade Names (Non-Amortizing) [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	75,556	76,172
Accumulated Amortization	0	0
Indefinite-Lived Intangible Assets Net of Impairment	75,556	76,172
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	300,284	305,866
Accumulated Amortization	(83,411)	(56,133)
Net carrying value of intangible assets	216,873	249,733
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,789	23,354
Accumulated Amortization	(20,517)	(18,746)
Net carrying value of intangible assets	2,272	4,608
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	134,731	133,247
Accumulated Amortization	(43,890)	(23,883)
Net carrying value of intangible assets	90,841	109,364
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	341	4,599
Accumulated Amortization	(341)	(4,195)
Net carrying value of intangible assets	$ 0	$ 404