Goodwill And Other Intangible Assets (Schedule Of Gross Carrying Values, Accumulated Amortization, And Approximate Amortization Period Of Definite Lived Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 135,768	$ 139,045
Accumulated amortization	12,787	8,686
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	3,601	3,612
Accumulated amortization	2,867	2,819
Distribution And Manufacturing Rights And Know-How [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,059	4,059
Accumulated amortization	1,963	1,820
Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	32,288	32,419
Accumulated amortization	4,319	3,552
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,638	1,439
Accumulated amortization	$ 1,286	$ 1,075
Minimum [Member] | Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	11 years	11 years
Minimum [Member] | Distribution And Manufacturing Rights And Know-How [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	11 years	11 years
Minimum [Member] | Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	13 years	13 years
Minimum [Member] | Other [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	3 years
Maximum [Member] | Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	22 years	22 years
Maximum [Member] | Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	17 years	17 years
Maximum [Member] | Distribution And Manufacturing Rights And Know-How [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years	15 years
Maximum [Member] | Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	23 years	23 years
Maximum [Member] | Other [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	5 years	3 years