INCOME TAXES - Loss Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
U.S. loss	$ (137,589)	$ (38,793)
Foreign income	10	98
Loss before provision for income taxes	$ (137,579)	$ (38,695)