Stock-Based Compensation - Summary of Weighted Average Assumptions Used to Compute Fair Value of Option Granted (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Risk-free interest rate	4.10%	4.30%	4.10%	4.20%
Expected term	5 years 6 months	5 years 7 months 6 days	5 years 10 months 24 days	6 years
Expected volatility of underlying stock	79.40%	76.30%	75.80%	76.40%
Expected dividend yield	0.00%	0.00%	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	4.24%	5.24%	4.24%	5.24%
Expected term	6 months	6 months	6 months	6 months
Expected volatility of underlying stock	66.20%	56.70%	66.20%	56.70%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%