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Goodwill and Intangible Assets - Future Amortization Expense for Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]    
Remainder of 2015 $ 3,212us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear  
2016 4,356us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2017 4,268us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2018 4,115us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2019 4,064us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
Thereafter 61,264us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Total intangibles assets, net carrying amount $ 81,279us-gaap_FiniteLivedIntangibleAssetsNet $ 82,667us-gaap_FiniteLivedIntangibleAssetsNet