Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Common Share - Additional Information (Detail)

v3.5.0.2
Net Loss Per Common Share - Additional Information (Detail) - shares
shares in Millions
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Stock Compensation Plan [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share amount 7.4 0.9