NET LOSS PER SHARE - Computation of Net loss per share (Details) - 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
Numerator
Net loss	$ (16,067)	$ (14,660)	$ (10,353)	$ (6,815)	$ (30,727)	$ (17,168)
Denominator
Weighted-average shares outstanding used in computing net loss per share, basic	49,622,752		49,258,449		49,583,886	25,540,922
Weighted-average shares outstanding used in computing net loss per share, diluted	49,622,752		49,258,449		49,583,886	25,540,922
Net loss per share, basic	$ (0.32)		$ (0.21)		$ (0.62)	$ (0.67)
Net loss per share, diluted	$ (0.32)		$ (0.21)		$ (0.62)	$ (0.67)