Goodwill And Other Intangible Assets (Schedule Of Intangible Assets, Net Of Amortization) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 43,047	$ 42,500
Less accumulated amortization	(5,285)	(4,400)
Intangible assets, net	37,762	38,100
Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	30,528	29,890
Product Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	8,782	8,868
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	2,232	2,237
Core Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 1,505	$ 1,505