Net Loss Per Share - Reconciles Basic Earnings Per Share and Diluted Earnings Per Share of Common Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Net loss	$ (9,164)	$ (8,300)	$ (10,941)	$ (10,217)	$ (17,464)	$ (21,158)
Net loss attributable to common stockholders	(9,164)		(10,941)		(17,464)	(21,158)
Undistributed earnings and net loss attributable to common stockholders, basic and diluted	$ (9,164)		$ (10,941)		$ (17,464)	$ (21,158)
Weighted Average Number of Shares Outstanding, Basic	152,771,103		152,460,531		152,770,434	114,934,938
Weighted Average Number of Shares Outstanding, Diluted	152,771,103		152,460,531		152,770,434	114,934,938
Earnings Per Share, Basic	$ (0.06)		$ (0.07)		$ (0.11)	$ (0.18)
Earnings Per Share, Diluted	$ (0.06)		$ (0.07)		$ (0.11)	$ (0.18)