Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 45,249	$ 45,356
Accumulated Amortization	(27,572)	(25,723)
Net Carrying Amount	17,677	19,633
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,081	33,188
Accumulated Amortization	(17,662)	(16,099)
Net Carrying Amount	15,419	17,089
Technology Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,300	11,300
Accumulated Amortization	(9,709)	(9,434)
Net Carrying Amount	1,591	1,866
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	868	868
Accumulated Amortization	(201)	(190)
Net Carrying Amount	$ 667	$ 678