ORGANIZATION - Components of Current Liquidity (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]
Cash and cash equivalents	$ 118,499				$ 118,499		$ 33,417
Debt securities available for sale	231,331				231,331		167,365
Unrestricted liquidity	349,830				349,830		200,782
Restricted Cash	166,551				166,551		230,441
Working capital	395,491				395,491		306,890
Accumulated deficit	198,215				198,215		$ 157,779
Net loss	$ 15,004	$ 25,432	$ 11,059	$ 26,074	$ 40,436	$ 37,133