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CONVERTIBLE NOTES (Bridge Note debt discounts and debt premiums) (Details) - Convertible Debt [Member] - Convertible Bridge Loan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Debt discounts
Beginning balance		$ (1,053)	$ (1,796)	$ (1,111)
Additions		(2,086)		(2,086)
Deductions: Amortization/accretion		55	703	113
Deductions: Write-off related to note conversions		926	138	926
Deductions: Write-off related to note extinguishment			955
Ending balance		(2,158)		(2,158)
Debt premiums
Beginning balance	$ 679	91		647
Additions:			793
Deductions: Amortization/accretion	(346)	(7)	(385)	(167)
Deductions: Write-off related to note conversions	$ (333)	$ (84)	$ (408)	$ (480)

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