Goodwill And Other Intangible Assets (Schedule Of Intangible Assets, Net Of Amortization) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 17,311	$ 17,130
Less accumulated amortization	(6,525)	(6,196)
Intangible assets, net	10,786	10,934
Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	14,126	14,026
Product Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	2,238	2,157
Core Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 947	$ 947