Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 45,515	$ 45,516
Accumulated Amortization	(22,926)	(22,065)
Net Carrying Amount	22,589	23,451
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,347	33,348
Accumulated Amortization	(13,731)	(12,900)
Net Carrying Amount	19,616	20,448
Technology Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,300	11,300
Accumulated Amortization	(9,023)	(8,999)
Net Carrying Amount	2,277	2,301
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	868	868
Accumulated Amortization	(172)	(166)
Net Carrying Amount	$ 696	$ 702