INCOME TAXES - Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ (249)	$ 2,780	$ (58)
State	4,990	3,801	(295)
Foreign	0	0	0
Total current tax expense (benefit)	4,741	6,581	(353)
Deferred:
Federal	(1,084)	0	0
State	(1,525)	0	0
Foreign	(132)	(200)	(665)
Total deferred tax expense (benefit)	(2,741)	(200)	(665)
Provision for (benefit from) income taxes	$ 2,000	$ 6,381	$ (1,018)