Net Loss Per Share Attributable to Common Stockholders - Schedule of Net Loss Per Share Attributable to Common Stockholders, Basic and Diluted (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator
Net loss	$ (9,036)	$ (2,432)
Convertible preferred stock cumulative and undeclared dividends		(158)
Net loss attributable to common stockholders	$ (9,036)	$ (2,590)
Denominator
Weighted-average common stock outstanding, basic and diluted	54,827,665	37,854,687
Net loss per share attributable to common stockholders, basic and diluted	$ (0.16)	$ (0.07)