NET LOSS PER SHARE - Weighted average number of common stock outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
NET LOSS PER SHARE
Loss attributable to common stockholders	$ (4,428)	$ (5,708)	$ (8,599)	$ (9,757)
Basic net loss per common share	$ (0.26)	$ (0.38)	$ (0.51)	$ (0.65)
Diluted net loss per common share	$ (0.26)	$ (0.38)	$ (0.51)	$ (0.65)
Weighted average of common shares	18,264,047		18,126,323
Weighted unvested RSAs	(1,363,477)		(1,396,371)
Basic Weighted average of common shares outstanding	16,900,570	15,178,035	16,729,952	14,951,881
Diluted Weighted average of common shares outstanding	16,900,570	15,178,035	16,729,952	14,951,881