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Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2021
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Jan. 01, 2024
Dec. 31, 2023
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Weighted-average remaining contractual term outstanding       5 years 11 months 8 days      
Stock subject to repurchase related to stock options early exercised and unvested   307,474   307,474     403,764
Stock repurchase program, remaining authorized repurchase amount   $ 0.6   $ 0.6     $ 0.8
Time Based Restricted Stock Units Rsu [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
PSUs ,Granted   0 360,870 1,064,518 360,870    
Performance Based Restricted Stock Units [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Dividend yield   0.00% 0.00% 0.00% 0.00%    
PSUs ,Granted       364,128      
Target persentage of number of shares earned       100.00%      
Performance Based Restricted Stock Units [Member] | Maximum [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Share based compensation by share based award vesting term       4 years      
Percentage of number of shares earned       300.00%      
Performance Based Restricted Stock Units [Member] | Minimum [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Share based compensation by share based award vesting term       3 years      
Percentage of number of shares earned       0.00%      
Stock Options [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Dividend yield   0.00% 0.00% 0.00% 0.00%    
2015 Equity Incentive Plan [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Weighted-average remaining contractual term outstanding       10 years      
2015 Equity Incentive Plan [Member] | Maximum [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Share based compensation by share based award vesting term       5 years      
2015 Equity Incentive Plan [Member] | Minimum [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Share based compensation by share based award vesting term       4 years      
2021 Equity Incentive Plan [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Shares reserved for issuances           14,215,808  
Weighted-average remaining contractual term outstanding       10 years      
Number of Shares Available for Grant   24,994,730   24,994,730      
Share based compensation arrangement by share based payment award cumulative annual increase percentage       5.00%      
2021 Equity Incentive Plan [Member] | Maximum [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Share based compensation by share based award vesting term       4 years      
2021 Equity Incentive Plan [Member] | Minimum [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Share based compensation by share based award vesting term       1 year      
Employee Stock Purchase Plan [Member]              
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]              
Shares reserved for issuances 5,354,000            
Number of shares issued under share based compensation       0      
Share Based Compensation Arrangement, Cumulative Annual Increase,Shares 10,708,000            
Share Based Compensation Arrangement, Cumulative Annual Increase Percentage Of fully Diluted Shares Of Common stock outstanding 1.00%            
Percentage of discount to the lower of closing price on that day or the closing price on the first day of the offering period 15.00%