Loss Per Share - Computation of Potentially Anti-Dilutive Securities (Detail) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential dilutive securities excluded from computation of diluted net loss per common share		24,535
Restricted Stock Unit [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential dilutive securities excluded from computation of diluted net loss per common share		88,430
Options to Purchase Common Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential dilutive securities excluded from computation of diluted net loss per common share	5,635,975	4,060,357
Loan Warrants [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential dilutive securities excluded from computation of diluted net loss per common share	15,686	15,686