INCOME TAXES (Provision for income taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Taxes
State income tax benefit (expense), Current	$ (131)	$ (32)
Total current income tax expense	(131)	(32)
Federal income tax benefit, Deferred	46,353
State income tax benefit (expense), Deferred	14,260
Total deferred income tax benefit	60,613
Total provision benefit (expense) for income taxes	$ 60,482	$ (32)