INCOME TAXES (Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current portion of income tax expense (benefit):
Federal	$ 0	$ 23	$ (2,793)
State	53	85	10
Deferred portion of income tax expense:
Federal	0	0	0
State	0	0	0
Total income tax expense (benefit)	$ 53	$ 108	$ (2,783)