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FAIR VALUE (Schedule of Changes in Fair Value of Liability) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | $ 1,325 | $ 1,338
Total losses: |  |
Revaluation recognized in earnings | (269) | (13)
Deductions - warrant exercises | (450) |
Balance at end of period | 606 | 1,325
2016 Warrant Liability [Member] |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 130 | 70
Total losses: |  |
Revaluation recognized in earnings |  | 60
Deductions - warrant exercises | (130) |
Balance at end of period |  | 130
2018 Warrant Liabilities [Member] |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 1,195 | 1,268
Total losses: |  |
Revaluation recognized in earnings | (269) | (73)
Deductions - warrant exercises | (320) |
Balance at end of period | $ 606 | $ 1,195

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