FAIR VALUE MEASUREMENT - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 02, 2021	Dec. 31, 2021	Dec. 31, 2020	Jun. 18, 2020
Fair Value Disclosures [Abstract]
Purchase option	$ 8	$ 8,000	$ 0
Purchase option, term	5 years
Purchase option, extension term	2 years
Warrant, percentage of outstanding shares	10.00%
Warrants expiration period	60 days			2 years
Gain on change in fair value of purchase option		5
Purchase option		13,000	0
Gain related to warrant liabilities		4,304	11,167
Warrant liabilities		$ 0	$ 4,304	$ 9,206