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Goodwill and Other Intangible Assets (Estimated Aggregate Future Amortization Expense for Intangible Assets) (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]    
2015 $ 3,324us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths  
2016 2,413us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2017 1,619us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2018 1,346us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2019 1,102us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
Thereafter 2,321us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Net Intangible Assets $ 12,125us-gaap_FiniteLivedIntangibleAssetsNet $ 6,345us-gaap_FiniteLivedIntangibleAssetsNet