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Equity Incentive Plans - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Jul. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Percentage of number of shares of capital stock outstanding on last day of preceding year 4.00%      
Stock option grants description Awards granted under the 2020 Plan expire no later than ten years from the date of grant. For Incentive Stock Options, or ISOs, and Nonstatutory Stock Options, or NSOs, the option price shall not be less than 100% of the estimated fair value on the date of grant. Options granted typically vest over a four-year period but may be granted with different vesting terms.      
Option expiry period 10 years      
Vesting Period 4 years      
Options available for future grant 1,084,592      
Intrinsic value of options exercised $ 300,000 $ 2,500    
Weighted- average exercise price per share, Stock options granted $ 6.05      
Unrecognized stock-based compensation cost expected period for recognition 2 years 6 months      
Common stock for future issuance 47,202,821   50,174,938  
Total stock-based compensation expense $ 4,607,000 $ 4,252,000    
Employees [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Weighted- average exercise price per share, Stock options granted $ 4.35 $ 4.76    
2022 Employment Inducement Award Plan [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Options available for future grant 1,418,600     2,000,000
Incentive Stock Options, or ISOs, and Nonstatutory Stock Options, or NSOs [Member] | Minimum [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Purchase of Common stock at end of each offering period at price equal to percentage of fair market value of shares 100.00%      
Stock Options Issued and Outstanding [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized stock-based compensation cost $ 37,200,000      
Restricted Stock Units [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized stock-based compensation cost $ 3,400,000      
Unrecognized stock-based compensation cost expected period for recognition 2 years 4 months 24 days      
Employee Stock Purchase Plan [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Purchase of Common stock at end of each offering period at price equal to percentage of fair market value of shares 85.00%      
Share purchases funded through payroll deductions minimum percentage of employee's eligible compensation 1.00%      
Share purchases funded through payroll deductions maximum percentage of employee's eligible compensation 15.00%      
Common stock for future issuance 1,471,486   994,257  
Maximum number of shares to be issued in accordance with plan as a proportion of outstanding capital stock 360,086      
Percentage of shares of common stock outstanding on last day of immediately preceding fiscal year 1.00%      
Total stock-based compensation expense $ 100,000 $ 18,000