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Goodwill and Intangible Assets - Schedule of Estimated Amortization Expense (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
2017 (for the remaining six months) $ 962  
2018 1,886  
2019 1,859  
2020 1,837  
2021 1,332  
2022 and thereafter 102  
Intangible assets, net $ 7,978 $ 8,946