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Intangible Assets, Net - Schedule of Estimated Amortization Expenses (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Intangible Liability Disclosure [Abstract]    
Remainder of 2016 $ 7,951  
2017 10,853  
2018 10,853  
2019 10,782  
2020 10,617  
2021 and thereafter 37,178  
Net intangible assets $ 88,234 $ 87,445