Marketable securities and fair value measurements - Summary of assets measured at FV on a recurring basis (Detail) - Fair Value, Recurring - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Marketable securities:
Total	$ 155,724	$ 236,128
Level 1
Marketable securities:
Total	46,802	38,210
Level 2
Marketable securities:
Total	108,922	197,918
Money Market Funds
Cash equivalents:
Cash equivalents	46,802	38,210
Money Market Funds | Level 1
Cash equivalents:
Cash equivalents	46,802	38,210
U.S. treasury securities
Marketable securities:
Marketable securities	108,922	197,918
U.S. treasury securities | Level 2
Marketable securities:
Marketable securities	$ 108,922	$ 197,918