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Equity Incentive Plans - Schedule of Fair Value of Stock Option Award and ESPP on Grant Date (Detail) - Stock Option - $ / shares
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Risk-free interest rate 3.90% 3.11% 0.66%
Expected term (in years) 4 years 6 months 4 years 1 month 6 days 4 years 3 months 18 days
Expected volatility 63.00% 63.00% 59.00%
Dividend yield 0.00% 0.00% 0.00%
Grant date fair value per share (in dollars per share) $ 121.62 $ 114.51 $ 128.02