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Stock-Based Compensation - Summary of Weighted Average Assumptions Used to Compute Fair Value of Option Granted (Detail)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Risk-free interest rate 4.20% 4.40%
Expected term 6 years 6 years
Expected volatility of underlying stock 76.40% 78.70%
Expected dividend yield 0.00% 0.00%
2016 Employee Stock Purchase Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Risk-free interest rate 5.24% 4.70%
Expected term 6 months 6 months
Expected volatility of underlying stock 56.70% 69.20%
Expected dividend yield 0.00% 0.00%