Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.7.0.1
Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 01, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]        
Maturity of temporary cash investments   3 months    
Revenue from sales taxes   $ 5,200 $ 4,500 $ 2,700
Advertisement Expenses   $ 200 $ 300 300
Deemed distribution on exchange of preferred stock       $ 5,301
Convertible stock, Conversion of preferred stock 36,300,171