NET LOSS PER COMMON SHARE - Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Basic shares outstanding (in shares)	63,638,385	60,571,259	63,387,009	58,431,770
Diluted shares outstanding (in shares)	63,638,385	60,571,259	63,387,009	58,431,770
Net loss (Basic)	$ (67,032)	$ (39,012)	$ (143,003)	$ (92,879)
Net loss (Diluted)	$ (67,032)	$ (39,012)	$ (143,003)	$ (92,879)
Basic net loss per common share (in dollars per share)	$ (1.05)	$ (0.64)	$ (2.26)	$ (1.59)
Diluted net loss per common share (in dollars per share)	$ (1.05)	$ (0.64)	$ (2.26)	$ (1.59)