Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share - Summary of Potentially Dilutive Common Shares were Excluded from Calculation of Diluted Net Loss Per Share (Details)

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Net Loss Per Share - Summary of Potentially Dilutive Common Shares were Excluded from Calculation of Diluted Net Loss Per Share (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Total dilutive common shares excluded from calculation of diluted net loss per share 283,521 426,306 283,521 426,306
Shares Subject to Options to Purchase Common Stock        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Total dilutive common shares excluded from calculation of diluted net loss per share 106,644 168,568 106,644 168,568
Unvested Restricted Stock Units        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Total dilutive common shares excluded from calculation of diluted net loss per share 176,877 257,738 176,877 257,738