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FAIR VALUE (Schedule of Changes in Fair Value of Liability) (Details) - 2016 Warrant Liability
$ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance $ 841
Total (gains) or losses:  
Recognized in earnings (261)
Deductions - warrant liability settlement (456)
Balance at end of period $ 124