Stock Compensation - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Schedule Of Share Based Payment Award Stock Options Valuation Assumptions [Line Items]
Expected volatility, Minimum	75.80%	76.30%	75.80%	76.30%
Expected volatility, Maximum	76.50%	76.60%	76.50%	76.60%
Risk-free rate, Minimum	2.80%	1.00%	1.80%	0.60%
Risk-free rate, Maximum	3.10%	1.10%	3.10%	1.10%
Minimum [Member]
Schedule Of Share Based Payment Award Stock Options Valuation Assumptions [Line Items]
Expected term (in years)	5 years 6 months	5 years 6 months	5 years 6 months	5 years 6 months
Maximum [Member]
Schedule Of Share Based Payment Award Stock Options Valuation Assumptions [Line Items]
Expected term (in years)	6 years 1 month 6 days	6 years 1 month 6 days	6 years 1 month 6 days	6 years 1 month 6 days