Quarterly report pursuant to Section 13 or 15(d)

Net Loss per Common Share (Schedule of Diluted Weighted Average Shares Outstanding) (Details)

v3.21.2
Net Loss per Common Share (Schedule of Diluted Weighted Average Shares Outstanding) (Details) - shares
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding 21,955,984 18,759,552
Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding 4,522,654 2,784,037
Employee Stock Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding 828,490 1,210,502
Unvested Restricted Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding 16,389,156 14,306,355
Unvested Restricted Stock Units [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding 215,684 458,658