Summary of Significant Accounting Policies - Computation of Basic and Diluted Net Loss per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net loss	$ (89,998)	$ (50,986)
Denominator:
Weighted average number of common stock shares outstanding	71,055,331	68,893,127
Net loss per share	$ (1.27)	$ (0.74)