Common Stock - Computation of Basic and Diluted Net Loss Attributable to Common Shareholders Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator
Net loss	$ (42,350)	$ (33,152)	$ (14,730)
Denominator
Shares used in computation of basic net loss per common share[note 1 and note 11 [i]]	10,593,034	8,119,836	2,718,909
Net loss per common share, basic	$ (4.00)	$ (4.08)	$ (5.42)
Shares used in computation of Diluted net loss per common share[note 1 and note 11 [i]]	10,593,034	8,119,836	2,718,909
Net loss per common share, diluted	$ (4.00)	$ (4.08)	$ (5.42)