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Net Loss Per Common Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Shares Underlying Warrants Outstanding [Member]    
Antidilutive securities excluded from computation of earnings per share 260,597 360,035
Shares Underlying Options Outstanding [Member]    
Antidilutive securities excluded from computation of earnings per share 1,288,949 1,007,370
Unvested Restricted Stock [Member]    
Antidilutive securities excluded from computation of earnings per share 64,338 55,111