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Stock-Based Compensation Expense - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Mar. 31, 2022
Jun. 30, 2023
May 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Issuance of common stock under the employee stock purchase plan $ 923,000   $ 740,000    
Common Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Issuance of common stock under the employee stock purchase plan $ 3,000   $ 2,000    
Issuance of common stock under the employee stock purchase plan (in shares) 266,000   233,000    
ESPP          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Equity incentive plan, number of shares available for grant increased by shares         3,000,000
Common stock available for issuance 3,100,000     3,100,000  
Employees Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Issuance of common stock under the employee stock purchase plan       $ 25,000  
Issuance of common stock under the employee stock purchase plan (in shares)       5,000  
Employees Awards | ESPP          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Discount on purchase price percentage of fair market value       85.00%  
Options and PNQs          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized compensation expense related to options $ 200,000     $ 200,000  
Unrecognized compensation expense, weighted average period for recognition       2 years 11 months 4 days  
RSUs          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Restricted stock units weighted average grant date fair value $ 4.56 $ 4.16      
Unrecognized compensation expense, weighted average period for recognition       2 years 8 months 23 days  
Unrecognized compensation expense related to non-option $ 24,000,000     $ 24,000,000  
RSUs | Employees Awards | Share-Based Payment Arrangement, Tranche One          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period 4 years 3 years      
Restricted stock units grant date fair value 2,598,971 91,900      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 25.00%        
RSUs | Employees Awards | Share-Based Payment Arrangement, Tranche Two          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period 3 years 2 years      
Restricted stock units grant date fair value 61,750 42,000      
RSUs | Employees Awards | Share-Based Payment Arrangement, Tranche Three          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period   4 years      
Restricted stock units grant date fair value   46,005      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   25.00%      
Market RSU's          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized compensation expense, weighted average period for recognition       2 years 25 days  
Unrecognized compensation expense related to non-option $ 20,900,000     $ 20,900,000  
Market RSU's | Employees Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Restricted stock units weighted average grant date fair value $ 9.4        
Market RSU's | Employees Awards | Share-Based Payment Arrangement, Tranche One          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 0.00%        
Market RSU's | Employees Awards | Share-Based Payment Arrangement, Tranche Two          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%        
Market RSU's | Employees Awards | Share-Based Payment Arrangement, Tranche Three          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 100.00%        
2018 Equity Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Equity incentive plan, number of shares available for grant increased by shares         25,000,000