Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net - Schedule of Future Amortization Related to Intangible Assets (Detail)

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Intangible Assets, Net - Schedule of Future Amortization Related to Intangible Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2017 (remainder of) $ 457  
2018 1,685  
2019 1,390  
2020 1,299  
2021 1,196  
Thereafter 6,008  
Net book value $ 12,035 $ 13,404