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Summary of Significant Accounting Policies - Summary of Potentially Dilutive Securities Excluded from Calculation of Diluted Net Loss per Share (Details) - shares
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from calculation of diluted net loss per share 1,850,313 1,375,307
Stock Options    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Potentially dilutive securities excluded from calculation of diluted net loss per share 1,850,313 1,375,307