Quarterly report pursuant to Section 13 or 15(d)

Basic and Diluted Net Loss Per Share - Additional Information (Detail)

v3.7.0.1
Basic and Diluted Net Loss Per Share - Additional Information (Detail) - shares
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Stock options and restricted stock units [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Stock options and restricted stock units outstanding 9,898,588 9,408,253