Quarterly report pursuant to Section 13 or 15(d)

Net Loss per Common Share - Computations of Diluted Weighted Average Shares Outstanding (Detail)

v3.7.0.1
Net Loss per Common Share - Computations of Diluted Weighted Average Shares Outstanding (Detail) - shares
 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total of weighted average shares outstanding 14,707,298 12,348,653
Warrants to Purchase Common Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total of weighted average shares outstanding 603,316 515,068
Opus warrants to purchase Common Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total of weighted average shares outstanding 1,880,000 0
Options to Purchase Common Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total of weighted average shares outstanding 1,101,193 1,754,365
Unvested Restricted Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total of weighted average shares outstanding 9,864,417 8,705,137
Unvested Restricted Stock Units [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total of weighted average shares outstanding 1,258,372 1,374,083