NET LOSS PER SHARE - Schedule of Computation of Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net loss	$ (125,596)	$ (67,254)
Weighted average common shares outstanding, basic (in shares)	36,189,002	32,907,100
Weighted average common share outstanding, diluted (in shares)	36,189,002	32,907,100
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (3.47)	$ (2.05)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (3.47)	$ (2.05)