INCOME TAXES - (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 22, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Discrete provisional net tax expense	$ 300
Unrecognized tax benefits		$ 0	$ 0	$ 0
Income tax expense related to uncertain tax positions		$ 0	$ 400	$ 200