Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Net Loss Per Share (Details)

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Summary of Significant Accounting Policies - Net 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]    
Totals 13,544,153 215,894
Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Totals 5,450,057 121,796
Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Totals 8,093,250 93,252
Convertible preferred stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Totals 846 846