INCOME TAXES (Components of Income Tax (Benefit) Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Current income tax expense	$ 766	$ 1,743	$ 3,887
Deferred income tax expense (benefit)	7,233	(12,526)	19,802
Total income tax expense (benefit)	$ 7,999	$ (10,783)	$ 23,689