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ORGANIZATION - Components of Current Liquidity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 63,892	$ 33,417
Debt securities available for sale	98,592	167,365
Unrestricted liquidity	162,484	200,782
Less: Other Ironton set-aside	54,560	50,713
Available unrestricted liquidity	107,924	150,069
Restricted Cash (current and non-current)	163,631	230,441
Working capital	197,916	306,890
Accumulated deficit	(242,525)	(157,779)
Net loss	$ (84,746)	$ (77,502)	$ (52,992)

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