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Goodwill and Intangible Assets, Estimated Amortization Expense (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Estimated Amortization Expense [Abstract]  
2015 $ 10,906us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2016 9,683us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2017 7,323us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2018 6,363us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2019 5,466us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Thereafter $ 6,364us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive