Net Loss per Share - Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net loss	$ (33,940)	$ (32,758)
Weighted average common shares used in net loss per share attributable to common stockholders, basic and diluted	22,841,481	18,059,011
Basic and diluted net loss per common share outstanding	$ (1.49)	$ (1.81)