BACKGROUND AND ORGANIZATION (Details) - USD ($) $ 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	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net loss	$ 27,633	$ 25,774	$ 30,976	$ 26,743	$ 53,407	$ 57,719
Net cash used in operating activities					54,333	$ 40,312
Cash and cash equivalents	$ 157,594				$ 157,594		$ 218,348