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INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
INCOME TAXES (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Effective income tax rate (as a percent)	(34.00%)	23.00%		(18.00%)
Reconciliation of federal income taxes and reported income taxes
Income tax expense	$ 99	$ (4)
Unrecognized tax benefits
Net uncertain tax benefit positions that would increase (reduce) effective income tax rate, if recognized	52			$ 52
Deferred Tax Liability	$ 305
Forecast
Effective income tax rate (as a percent)			56.00%