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Goodwill and Intangible Assets (Detail) - Estimated Future Amortization Expense By Year From Amortizable Intangibles - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2015 (remaining six months) $ 3,994  
2016 7,190  
2017 5,665  
2018 4,438  
2019 2,822  
2020 2,532  
2021 469  
Finite-lived intangible assets, net $ 27,110 $ 30,689