FAIR VALUE (Narratives) (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2018 shares	Jun. 30, 2020 USD ($) Y shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) Y shares	Jun. 30, 2019 USD ($)	Dec. 31, 2019 Y	Dec. 31, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt settlement			$ 2,364,000		$ 2,364,000
Loss on derivative		$ 0		$ 0
Derivative asset (liability)							$ 62,000
Bridge Notes Redemption Feature [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset (liability)							30,000
Conversion Option [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset (liability)							$ 32,000
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				$ (400,000)
Warrants canceled in settlement agreement | shares				1,347
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		119		119
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		0.18		0.18
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		0.50		0.50
April 2018 Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stock rights issued (in shares) | shares	243,224
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						140
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						1.59
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						1
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		123		123
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		0.16		0.16
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		1.81		1.81
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		159		159
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		0.24		0.24
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		3.87		3.87