WARRANTS - Changes in fair value of warrant liabilities (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
WARRANTS.
Fair value at beginning of period		$ 71,701		$ 59,877
Change in fair value of Warrants	$ 15,095	(23,397)	$ (11,321)	(28,932)	$ (23,397)
Fair value at end of period	$ 30,945	$ 48,304	$ 48,304	$ 30,945	$ 48,304