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Summary of Significant Accounting Policies - Fair Value of Options Granted Under Equity Incentive Plan and Shares Subject to Employee Stock Purchase Plan Valuation Assumptions (Detail) - $ / shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Equity Incentive Plans      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Average risk-free interest rate   4.27%  
Expected dividend yield   0.00%  
Expected life   4 years 9 months  
Expected volatility   43.00%  
Weighted average fair value   $ 14.24  
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Average risk-free interest rate 4.55% 5.51% 3.71%
Expected dividend yield 0.00% 0.00% 0.00%
Expected life 6 months 6 months 6 months
Expected volatility 38.00% 35.00% 33.00%
Weighted average fair value $ 4.86 $ 7.9 $ 10.22