Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Gross balance	$ 13,644	$ 7,698
Accumulated Amortization	(3,118)	(1,426)
Net	10,526	6,272
Acquired Software And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross balance	6,425	1,785
Accumulated Amortization	(947)	(193)
Net	5,478	1,592
Patent Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross balance	4,500	4,500
Accumulated Amortization	(1,130)	(487)
Net	3,370	4,013
Non-Compete Covenant [Member]
Finite-Lived Intangible Assets [Line Items]
Gross balance	489
Accumulated Amortization	(104)
Net	385
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Gross balance	2,230	1,413
Accumulated Amortization	(937)	(746)
Net	$ 1,293	$ 667