Business Changes And Developments (Annual Amortization Of Intangibles For Next Five Years) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011
Business Changes And Developments [Abstract]
2012	$ 10,489
2013	7,508
2014	5,214
2015	3,555
2016	$ 3,174

Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets, Year Five

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Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets, Year Four

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Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets, Year One

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Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets, Year Three

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Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets, Year Two

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