FAIR VALUE (Narratives) (Details) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		12 Months Ended
	May 31, 2019 shares	Apr. 30, 2019 shares	Apr. 30, 2018 USD ($) shares	Dec. 31, 2018 USD ($) Y shares	Sep. 30, 2018 USD ($) shares	Dec. 31, 2019 USD ($) Y shares	Dec. 31, 2018 USD ($) Y	Feb. 12, 2018 $ / shares	Dec. 31, 2017 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt settlement						$ 477
Share price (in dollars per share) | $ / shares								$ 15.60
Derivative asset (liability)				$ 62			$ 62
Bridge Notes Redemption Feature [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt settlement						438
Derivative asset (liability)				30			30
Conversion Option [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt settlement						39
Derivative asset (liability)				$ 32			32
Quarter 3 2018 Bridge Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities					$ 100
Derivative liability from debt discount					$ 100
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
(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						140
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						1.59
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
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			176
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			2.48
Quarter 4 2018 Warrants | Measurement Input, Expected Term [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected term							2 years
April 2019 Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stock rights issued (in shares) | shares		147,472
May 2019 Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stock rights issued (in shares) | shares	154,343
Minimum | Measurement Input, Price Volatility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrants and Rights Outstanding, Measurement Input						141
Minimum | 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						1.58
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				85			85
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				2.45			2.45
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				0.3			0.3
Minimum | April 2019 Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected term						2 years 3 months 18 days
Maximum | Measurement Input, Price Volatility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrants and Rights Outstanding, Measurement Input						163
Maximum | 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						1.65
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				162			162
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				2.63			2.63
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				5.0			5.0
Maximum | April 2019 Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected term						4 years 4 months 24 days