Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Net Income (Loss) per Common Share - Computations of Diluted Weighted Average Shares Outstanding (Detail)
 12 Months Ended
Dec. 31, 2018
shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Total of weighted average shares outstanding 17,688,787
Warrants to Purchase Common Stock [Member]  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Total of weighted average shares outstanding 894,189
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
Options to Purchase Common Stock [Member]  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Total of weighted average shares outstanding 1,085,501
Convertible Preferred Stock [Member]  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Total of weighted average shares outstanding 1,000,000
Unvested Restricted Stock [Member]  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Total of weighted average shares outstanding 11,050,943
Unvested Restricted Stock Units [Member]  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Total of weighted average shares outstanding 1,778,154