SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	$ 294
Other current assets	209		$ 430
Depreciation expense	100	$ 100
Amortization expense for intangible assets	300
Amortization expense, next twelve months	1,200
Amortization expense, 2019	1,000
Amortization expense, 2020	1,000
Amortization expense, 2021	900
Amortization expense, 2022	900
Deferred revenue	$ 189		$ 66