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FAIR VALUE (Narratives) (Details)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Apr. 30, 2018
USD ($)
shares
Jun. 30, 2019
USD ($)
Y
shares
Dec. 31, 2018
USD ($)
Y
shares
Sep. 30, 2018
USD ($)
shares
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
Y
shares
May 31, 2019
shares
Apr. 30, 2019
shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Debt settlement   $ 2,364     $ 456 $ 2,364    
Derivative liability from debt discount   $ 400       $ 400    
Derivative asset (liability)     $ 62   143      
Bridge Notes Redemption Feature [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Derivative asset (liability)     30   143      
Conversion Option [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Derivative asset (liability)     $ 32          
April 2018 Bridge Notes                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Derivative liabilities $ 300              
Derivative liability from debt discount       $ 100        
2016 Warrant Liability [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants outstanding (in shares) | shares   357       357    
(Decrease) in warrant liability           $ (400)    
Warrants canceled in settlement agreement | shares           1,347    
Debt settlement         $ 456      
Measurement Input, Price Volatility [Member] | 2016 Warrant Liability [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input   141       141    
Measurement Input, Risk Free Interest Rate [Member] | 2016 Warrant Liability [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input   1.84       1.84    
Measurement Input, Expected Term [Member] | 2016 Warrant Liability [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input | Y   1.50       1.50    
April 2018 Warrants                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Stock rights issued (in shares) | shares 243,224              
Advisor Warrants                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Stock rights issued (in shares) | shares 15,466              
Quarter 3 2018 Warrants                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Stock rights issued (in shares) | shares       196,340        
Quarter 4 2018 Warrants                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Stock rights issued (in shares) | shares     300,115          
Quarter 4 2018 Warrants | Measurement Input, Price Volatility [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input     176.00          
Quarter 4 2018 Warrants | Measurement Input, Risk Free Interest Rate [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input     2.48          
Quarter 4 2018 Warrants | Measurement Input, Expected Term [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input | Y     2          
April 2019 Warrants [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants outstanding (in shares) | shares               147,472
May 2019 Warrants                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants outstanding (in shares) | shares             154,343  
Minimum | April 2018 Warrants | Measurement Input, Price Volatility [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input   147       147    
Minimum | April 2018 Warrants | Measurement Input, Risk Free Interest Rate [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input   1.71       1.71    
Minimum | April 2018 Warrants | Measurement Input, Expected Term [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input | Y   2.81       2.81    
Maximum | April 2018 Warrants | Measurement Input, Price Volatility [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input   173       173    
Maximum | April 2018 Warrants | Measurement Input, Risk Free Interest Rate [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input   1.76       1.76    
Maximum | April 2018 Warrants | Measurement Input, Expected Term [Member]                
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                
Warrants and Rights Outstanding, Measurement Input | Y   4.88       4.88