Stockholders' Equity - Summary of Estimated Fair Value of Stock Option Award (Detail) - Common stock options [Member]	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk free interest rate	1.34%	1.67%
Expected term	5 years 6 months	5 years 6 months
Expected volatility of common stock	99.34%	97.04%
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk free interest rate	3.39%	3.55%
Expected term	6 years	6 years 7 days
Expected volatility of common stock	103.64%	113.23%