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Estimated Amortization of Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
2015 $ 2,632us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2016 2,340us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2017 2,321us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2018 2,244us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2019 1,751us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Thereafter 1,376us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Total, Net $ 12,664us-gaap_FiniteLivedIntangibleAssetsNet