v3.6.0.2
Property and Equipment, Net - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Depreciation expense $ 2,400 $ 1,000 $ 300
Property and equipment 14,779 6,625  
Accumulated depreciation 3,705 1,265  
Capitalized Software Development      
Property, Plant and Equipment [Line Items]      
Depreciation expense $ 400 400 $ 100
Installment payment period 4 years    
Property and equipment $ 1,800 1,800  
Accumulated depreciation $ 900 $ 500