INCOME TAXES - Income Tax (Benefit) Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income tax (benefit) provision
Domestic	$ (51,923)	$ (5,711)	$ (1,238)
Foreign	23	(45)	715
Total income tax benefit	(51,900)	(5,756)	(523)
Income tax (benefit) provision
Current	177	823	1,071
Deferred	(52,077)	(6,579)	(1,594)
Total income tax benefit	$ (51,900)	$ (5,756)	$ (523)