Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share
Net loss		$ (6,411)	$ (3,628)	$ (14,117)	$ (10,851)
Less: decrease in fair value of investor warrants		(1,167)	(222)	(5,384)	(489)
Net loss available to common stockholders		$ (7,578)	$ (3,850)	$ (19,501)	$ (11,340)
Basic weighted-average common shares outstanding	[1]	15,072,392	13,361,292	15,072,307	13,156,469
Add: dilutive effect of equity instruments			76,251		81,935
Diluted weighted-average shares outstanding	[1]	15,072,392	13,437,543	15,072,307	13,238,404
Earnings per share - basic	[1]	$ (0.43)	$ (0.27)	$ (0.94)	$ (0.82)
Earnings per share - diluted	[1]	$ (0.50)	$ (0.29)	$ (1.29)	$ (0.86)

[1] Net loss per common share and weighted average number of common shares outstanding for all periods shown have been retroactively adjusted to reflect the 15-to-1 reverse stock split effected November 9, 2022.