Summary of Significant Accounting Policies - Fair Value of Stock Options Assumptions Using Black-Scholes Option Valuation Model (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Risk-free interest rate, Minimum	1.63%	0.50%
Risk-free interest rate, Maximum	4.21%	1.36%
Expected volatility, Minimum	74.49%	72.53%
Expected volatility, Maximum	88.75%	74.80%
Maximum [Member]
Expected life in years	6 years 3 months	6 years 3 months
Minimum [Member]
Expected life in years	5 years 3 months 7 days	5 years 6 months