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Loss per Share - Schedule of Antidilutive Securities Excluded from Diluted Income (Loss) per Share (Details) - shares
9 Months Ended
Sep. 30, 2020
Sep. 30, 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) 4,075,446 4,189,000
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) 531,336 254,000
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) 3,121,125 3,637,000
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