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Goodwill And Other Intangible Assets (Schedule Of Estimated Amortization Expense) (Details) (USD $)
In Thousands
9 Months Ended
Sep. 30, 2011
Goodwill And Other Intangible Assets 
2011$ 53,294
201253,104
201349,849
201445,351
201540,019
2016$ 34,343