Stockholders' Equity - Schedule of Fair Value of Award Granted Using Black-Scholes Option Pricing Model (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend rate	0.00%	0.00%	0.00%	0.00%
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (years)	5 years 3 months 18 days	5 years 2 months 12 days	5 years 3 months 18 days	5 years 2 months 12 days
Risk-free interest rate	4.00%	2.80%	3.50%	1.70%
Volatility	98.00%	92.00%	98.00%	88.00%
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (years)	6 years	5 years 8 months 12 days	6 years	6 years
Risk-free interest rate	4.40%	3.10%	4.40%	3.00%
Volatility	100.00%	95.00%	100.00%	93.00%