INCOME TAXES - Schedule of (Benefit) Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 896	$ 384	$ 1,087
State	171	(1,813)	140
Total current	1,067	(1,429)	1,227
Deferred:
Federal	0	0	16,291
State	0	0	6,700
Total deferred	0	0	22,991
Total	$ 1,067	$ (1,429)	$ 24,218