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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets, Net Of Amortization) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 32,917 $ 33,010
Less accumulated amortization (17,101) (13,594)
Intangible assets, net $ 15,816 $ 19,416
Weighted average useful life 14 years 3 months 18 days 14 years 3 months 18 days
Customer Lists And Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 25,995 $ 26,047
Less accumulated amortization (13,392) (10,710)
Intangible assets, net $ 12,603 $ 15,337
Weighted average useful life 15 years 2 months 12 days 15 years 2 months 12 days
Product Technologies [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 4,712 $ 4,753
Less accumulated amortization (2,416) (1,853)
Intangible assets, net $ 2,296 $ 2,900
Weighted average useful life 11 years 10 months 24 days 11 years 10 months 24 days
Trade Names and Trademarks [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 1,263 $ 1,263
Less accumulated amortization (386) (218)
Intangible assets, net $ 877 $ 1,045
Weighted average useful life 9 years 4 months 24 days 9 years 4 months 24 days
Core Technologies [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 947 $ 947
Less accumulated amortization (907) (813)
Intangible assets, net $ 40 $ 134
Weighted average useful life 10 years 10 years