Goodwill And Other Intangible Assets (Schedule Of Intangible Assets, Net Of Amortization) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 31,452	$ 33,437
Less accumulated amortization	(8,725)	(8,525)
Intangible assets, net	22,727us-gaap_FiniteLivedIntangibleAssetsNet	24,912us-gaap_FiniteLivedIntangibleAssetsNet
Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	21,991	23,096
Product Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	6,822	7,530
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	1,692	1,864
Core Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 947	$ 947