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Estimated Amortization Expense for Intangible Assets, by Year (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Finite-Lived Intangible Liabilities [Line Items]  
2014 $ 712
2015 712
2016 607
2017 381
2018 292
2019 and thereafter   
Finite lived intangibles, net $ 2,704