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Net Loss per Share - Common Stock Equivalents Excluded from Computation of Diluted Net Loss per Share (Details) - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Options to purchase common stock    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive securities excluded from computation of diluted net loss per share 559,336 487,227
Warrants | Common Stock    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive securities excluded from computation of diluted net loss per share 58,688 58,688
Unvested Restricted Stock Units    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive securities excluded from computation of diluted net loss per share 31,177 12,214
Series A Preferred    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive securities excluded from computation of diluted net loss per share 158,545 158,545