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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
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Acquired Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 217,085 $ 140,193
Accumulated amortization 32,075 24,778
Customer Lists And Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 31,215 31,131
Accumulated amortization 7,733 6,581
Distribution And Manufacturing Rights And Know-How [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 14,239 13,826
Accumulated amortization 4,678 3,005
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 3,888 3,664
Accumulated amortization 3,104 3,074
Other [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 2,712 1,919
Accumulated amortization $ 903 $ 608
Minimum [Member] | Acquired Technology [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] | Distribution And Manufacturing Rights And Know-How [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortization Period 5 years 5 years
Minimum [Member] | Other [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortization Period 4 years 3 years
Maximum [Member] | Acquired Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortization Period 22 years 22 years
Maximum [Member] | Customer Lists And Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortization Period 22 years 22 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] | Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortization Period 17 years 17 years
Maximum [Member] | Other [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortization Period 5 years 5 years