INCOME TAXES - Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Federal:
Current	$ 0	$ 0
Deferred	(27,162)	5,973
State:
Current	552	595
Deferred	(7,866)	4,296
(Benefit from) provision for income taxes	$ (34,476)	$ 10,864