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Loss per Share - Schedule of Antidilutive Securities Excluded from Diluted Income (Loss) per Share (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) 4,067,946 3,936,865
Outstanding Stock Options [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) 531,336 1,865
Convertible Preferred Stock [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) 422,985 298,000
Outstanding Warrants [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) 3,113,625 3,637,000