Net Loss per Share - Schedule of Diluted Net Loss Per Share Attributable to Common Stockholders Anti-Diluted Effect (Detail) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive stock	6,276,927	1,691,028	25,503,512
Convertible Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive stock			22,325,780
Unvested Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive stock	37,745	110,104	232,434
Options to Purchase Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive stock	6,239,182	1,580,924	2,945,298