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FAIR VALUE (Details) - 2016 Warrant Liability
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance
Additions 615
Total (gains) or losses:  
Recognized in earnings 226
Balance at end of period $ 841