Fair Value - Fair Value Assets Measured on a Recurring Basis (Detail) - Fair Value Measurements, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets
Assets, Fair Value Disclosure, Total	$ 47,554	$ 71,493
Money Market Funds [Member]
Assets
Money market funds	47,554	71,493
Level 1 [Member]
Assets
Assets, Fair Value Disclosure, Total	47,554	71,493
Level 1 [Member] | Money Market Funds [Member]
Assets
Money market funds	47,554	71,493
Level 2 [Member]
Assets
Assets, Fair Value Disclosure, Total
Level 2 [Member] | Money Market Funds [Member]
Assets
Money market funds
Level 3 [Member]
Assets
Assets, Fair Value Disclosure, Total
Level 3 [Member] | Money Market Funds [Member]
Assets
Money market funds