Fair Value of Financial Assets and Liabilities - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Marketable securities:
Marketable securities	$ 54,104	$ 66,872
Cash equivalents and marketable securities	56,951	78,041
U.S. Treasury Securities [Member]
Marketable securities:
Marketable securities	51,110	63,874
U.S. Government Agency Bonds [Member]
Marketable securities:
Marketable securities	2,994	2,998
Money Market Funds [Member]
Cash equivalents:
Cash equivalents	2,847	11,169
Level 1 [Member]
Marketable securities:
Cash equivalents and marketable securities	2,847	11,169
Level 1 [Member] | Money Market Funds [Member]
Cash equivalents:
Cash equivalents	2,847	11,169
Level 2 [Member]
Marketable securities:
Cash equivalents and marketable securities	54,104	66,872
Level 2 [Member] | U.S. Treasury Securities [Member]
Marketable securities:
Marketable securities	51,110	63,874
Level 2 [Member] | U.S. Government Agency Bonds [Member]
Marketable securities:
Marketable securities	$ 2,994	$ 2,998