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SUPPLEMENTAL FINANCIAL INFORMATION - Schedule of Other Nonoperating Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest income	$ 12	$ 11
Change in value of investments accounted for at fair value	(3,418)	1,456
Change in value of warrant liabilities	0	(3,504)
Foreign exchange loss	(1,213)	(339)
Other	111	329
Other loss	$ (4,508)	$ (2,047)

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