Goodwill And Other Intangible Assets (Schedule Of Intangible Assets, Net Of Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 33,010	$ 33,062
Less accumulated amortization	(13,594)	(9,824)
Intangible assets, net	$ 19,416	$ 23,238
Weighted average useful life	14 years 3 months 18 days	14 years 4 months 24 days
Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 26,047	$ 26,166
Less accumulated amortization	(10,710)	(7,841)
Intangible assets, net	$ 15,337	$ 18,325
Weighted average useful life	15 years 2 months 12 days	15 years 1 month 6 days
Product Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 4,753	$ 4,849
Less accumulated amortization	(1,853)	(1,203)
Intangible assets, net	$ 2,900	$ 3,646
Weighted average useful life	11 years 10 months 24 days	12 years
Trade Names and Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 1,263	$ 1,100
Less accumulated amortization	(218)	(62)
Intangible assets, net	$ 1,045	$ 1,038
Weighted average useful life	9 years 4 months 24 days	10 years
Core Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 947	$ 947
Less accumulated amortization	(813)	(718)
Intangible assets, net	$ 134	$ 229
Weighted average useful life	10 years	10 years