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SUBSEQUENT EVENT (Details Narrative) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Statement Line Items [Line Items]      
Cash commission on gross proceeds, percentage 7.00%    
Issuance costs $ 8,466 $ 40 $ 22,791
Subsequent event [Member]      
Statement Line Items [Line Items]      
Common stock shares issued through "at the market" offering 835,189    
Proceeds from issuance of common stock including issuance costs $ 517    
Cash commission on gross proceeds, percentage 3.00%    
Issuance costs $ 15    
Net proceeds from issuance of common stock $ 502