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Intangible Assets - Estimated Amortization Expense Succeeding Fiscal Years (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]    
2015 $ 4,366us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths  
2016 3,427us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2017 1,618us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2018 913us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2019 375us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
Thereafter 0us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Net Carrying Value $ 10,699us-gaap_FiniteLivedIntangibleAssetsNet $ 14,723us-gaap_FiniteLivedIntangibleAssetsNet