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Equity Incentive Plans - Summary of Activities and Reconciliation of Common Stock Remaining for Grant (Detail) - shares
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
2020 and 2021 Plan    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares authorized under 2020 and 2021 Plans 5,636,000 4,101,545
Restricted stock awards granted   (832,983)
Remaining shares available for grant 5,254,863 2,064,221
2021 Stock Option and Incentive Plan    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Options granted (381,137) (1,204,341)