Income Taxes - Summary of Changes to Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Balance at the beginning of the year	$ 2,404	$ 2,210
Decrease related to prior year positions	(24)
Increase related to current year positions	294	194
Balance at the end of the year	$ 2,674	$ 2,404