Fair Value of Financial Assets and Liabilities - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis and Indicate Level of Fair Value Hierarchy Utilized (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Cash equivalents	$ 84,462	$ 84,462
Assets Fair Value Disclosure	84,462	84,462
Level 2 [Member]
Assets:
Cash equivalents	84,462	84,462
Assets Fair Value Disclosure	$ 84,462	$ 84,462