Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies - Anti-dilutive securities (Details)

v3.20.1
Significant Accounting Policies - Anti-dilutive securities (Details) - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 8,308,821 8,237,093
Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 5,405,669 5,210,698
Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 1,241,675 1,241,675
Class A Preferred Shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 250,000 250,000
Unvested restricted stock awards    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 299,060 502,636
Unvested restricted stock units    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 1,112,417 1,032,084