FAIR VALUE (Schedule of Changes in Fair Value of Liability) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 1,338	$ 1,132
Total (gains) or losses:
Revaluation recognized in earnings	(936)	(240)
Balance at end of period	402	892
2016 Warrant Liability [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	70	116
Total (gains) or losses:
Revaluation recognized in earnings	(12)	(23)
Balance at end of period	58	93
2018 Warrant Liabilities [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,268	1,016
Total (gains) or losses:
Revaluation recognized in earnings	(924)	(217)
Balance at end of period	$ 344	$ 799