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FAIR VALUE MEASUREMENTS (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Fair Value Disclosures [Abstract]    
Balance at January $ 128 $ 69
Interest accrued on face value of 5% Notes 878 845
Conversion of 5% Notes 0 0
Change in fair value of Level 3 liabilities (939) (786)
Balance at December $ 67 $ 128