Marketable Securities and Fair Value Measurements - Summary of assets measured at fair value on a recurring basis (Detail) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Marketable securities:
Total	$ 241,959	$ 262,930
Level 1
Marketable securities:
Total	48,960	77,010
Level 2
Marketable securities:
Total	192,999	185,920
Level 3
Marketable securities:
Total	0	0
Money Market Funds
Cash equivalents:
Cash equivalents	48,960	77,010
Money Market Funds | Level 1
Cash equivalents:
Cash equivalents	48,960	77,010
Money Market Funds | Level 2
Cash equivalents:
Cash equivalents	0	0
Money Market Funds | Level 3
Cash equivalents:
Cash equivalents	0	0
U.S. treasury securities
Marketable securities:
Marketable securities	192,999	185,920
U.S. treasury securities | Level 1
Marketable securities:
Marketable securities	0	0
U.S. treasury securities | Level 2
Marketable securities:
Marketable securities	192,999	185,920
U.S. treasury securities | Level 3
Marketable securities:
Marketable securities	$ 0	$ 0