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Intangible Assets (Schedule Of Expected Amortization Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Intangible Assets [Abstract]    
2015 $ 39,116us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths  
2016 35,268us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2017 31,343us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2018 25,898us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2019 22,092us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
Thereafter 23,095us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Net Carrying Amount $ 176,812us-gaap_FiniteLivedIntangibleAssetsNet $ 154,516us-gaap_FiniteLivedIntangibleAssetsNet