Weighted Average Assumptions Used to Value Stock-Based Awards (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, expected dividend yield	0.00%
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)		6 years 9 months 25 days	6 years 11 months 19 days
Estimated volatility		55.00%	55.00%
Risk-free interest rate		1.89%	1.16%
Stock-based compensation, expected dividend yield		0.00%	0.00%
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	9 months	8 months 26 days	8 months 26 days
Estimated volatility	70.00%	56.00%	56.00%
Risk-free interest rate	5.29%	2.25%	0.07%
Stock-based compensation, expected dividend yield	0.00%	0.00%	0.00%