Equity Incentive Plans and Stock Based Compensation - Weighted-Average Fair Value Valuation Assumptions (Detail) - Employee Stock Option - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	4.10%	2.35%
Expected term (in years)	6 years 29 days	6 years 29 days
Dividend yield	0.00%	0.00%
Volatility	77.72%	88.59%
Weighted-average fair value of stock options granted	$ 5.09	$ 24.75