NET LOSS PER COMMON SHARE - EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net loss attributable to common stockholders-basic	$ (19,101)	$ (28,418)	$ (68,079)	$ (78,425)
Net loss attributable to common stockholders-diluted	$ (19,101)	$ (28,418)	$ (68,079)	$ (78,425)
Denominator:
Weighted-average common stock outstanding-basic (in shares)	48,000,183	26,177,079	33,785,386	25,472,590
Weighted-average common stock outstanding-diluted (in shares)	48,000,183	26,177,079	33,785,386	25,472,590
Net loss per share attributable to common stockholders-basic (in dollars per share)	$ (0.40)	$ (1.09)	$ (2.02)	$ (3.08)
Net loss per share attributable to common stockholders-diluted (in dollars per share)	$ (0.40)	$ (1.09)	$ (2.02)	$ (3.08)