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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, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Debt discounts
Beginning balance	$ (1,053)		$ (1,111)
Additions	(2,086)	$ (1,824)	(2,086)	$ (1,824)
Deductions: Amortization/accretion	55	9	113	9
Deductions: Write-off related to note conversions	926		926
Ending balance	(2,158)	$ (1,815)	(2,158)	$ (1,815)
Debt premiums
Beginning balance			647
Deductions: Amortization/accretion	(7)		(167)
Deductions: Write-off related to note conversions	(84)		(480)
Ending balance	$ 91		$ 91

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