Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Class A Redeemable Convertible Preferred Stock - Schedule of Beneficial Conversion Feature At Original Issue Date (Detail)

v3.6.0.2
Class A Redeemable Convertible Preferred Stock - Schedule of Beneficial Conversion Feature At Original Issue Date (Detail) - USD ($)
$ / shares in Units, $ in Thousands
Dec. 30, 2015
Dec. 31, 2016
Dec. 31, 2015
Aug. 31, 2014
Temporary Equity [Line Items]        
Stock price on issue date       $ 4.60
Series A Redeemable Convertible Preferred Stock [Member]        
Temporary Equity [Line Items]        
Common shares the stock coverts into 14,666,667      
Effective conversion price $ 4.99      
Stock price on issue date 8.04      
Excess fair value over conversion price $ 3.05 $ 3.05    
Temporary equity, fair value $ 73,200      
Value of Beneficial Conversion Feature (44,720) $ (44,720) $ (44,720)  
Carrying amount of preferred stock $ 28,480 $ 12,816 $ 28,480