FEDERAL AND STATE CURRENT AND DEFERRED INCOME TAX - Income Tax Benefit for Federal and State Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Current tax (provision) benefit	$ 360	$ (47)	$ 48
Deferred tax (provision) benefit	(3,442)	1,182	2,913
Total income tax (provision) benefit	$ (3,082)	$ 1,135	$ 2,961