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
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount 13,644,367 10,154,952 13,767,873 9,757,654
Restricted Stock [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount     8,705,137