Net Loss Per Share - Computation of Diluted Weighted-Average Shares Outstanding (Detail) - shares		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total of common stock equivalents		6,401,198	5,074,579	6,401,198	5,074,579
Options to Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total of common stock equivalents		5,864,338	4,490,867	5,864,338	4,490,867
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total of common stock equivalents		536,860	501,254	536,860	501,254
Nonvested Founder Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total of common stock equivalents	[1]	0	82,458	0	82,458

[1] Represents 82,458 shares of common stock that are issued and outstanding but that were subject to vesting based on service requirements at June 30, 2021, and were not included in stockholders’ equity at such date.