Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Net Loss per Share (Details)

v3.21.1
Significant Accounting Policies - Net Loss per Share (Details) - shares
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities that were excluded from the computation of diluted net loss per share, as they would be anti-dilutive 4,503,838 8,304,230
Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities that were excluded from the computation of diluted net loss per share, as they would be anti-dilutive 13,191 4,104,705
Stock options (Note 6) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities that were excluded from the computation of diluted net loss per share, as they would be anti-dilutive 250,000 200,000
Restricted stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities that were excluded from the computation of diluted net loss per share, as they would be anti-dilutive 4,240,647 3,999,525