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Estimated Future Amortization Expense of Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Finite Lived Intangible Assets Future Amortization Expense [Line Items]    
2014 $ 2,370  
2015 2,103  
2016 1,462  
2017 706  
2018 574  
Thereafter 550  
Carrying Value $ 7,765 $ 7,013