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Estimated Future Amortization Expense (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
2014 $ 3,333  
2015 2,730  
2016 2,128  
2017 1,541  
2018 and after 1,481  
Intangible Assets, net $ 11,213 $ 12,152