General form of registration statement for all companies including face-amount certificate companies

Net Loss Per Share - Summary of Shares Excluded from Calculation of Diluted Net Loss per Share Applicable to Common Stockholders (Detail)

v3.21.1
Net Loss Per Share - Summary of Shares Excluded from Calculation of Diluted Net Loss per Share Applicable to Common Stockholders (Detail) - shares
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive shares excluded from calculation of diluted net loss per share 4,386,985 3,843,867 4,318,357 3,843,867
Options to Purchase Shares of Stock        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive shares excluded from calculation of diluted net loss per share 3,665,072 3,369,144 3,596,444 3,369,144
Warrants to Purchase Shares of Stock        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive shares excluded from calculation of diluted net loss per share 721,913 474,723 721,913 474,723