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Business Changes and Developments Annual Amortization of Intangibles for Next Five Years (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Business Combinations [Abstract]  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 15,277us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Finite-Lived Intangible Assets, Amortization Expense, Year Two 13,592us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Finite-Lived Intangible Assets, Amortization Expense, Year Three 12,431us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Finite-Lived Intangible Assets, Amortization Expense, Year Four 11,794us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 10,286us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive