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BUSINESS DESCRIPTION (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Apr. 02, 2021 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |  |
Net loss |  | $ 4,600 |  |
Accumulated deficit |  | (84,684) |  | $ (80,094)
Working deficiency |  | 7,000 |  |
Net cash used in operating activities |  | $ (2,334) | $ (1,260) |
Proceeds from issuance of common stock |  |  | $ 1,260 |
Common stock, par value |  | $ 0.01 |  | $ 0.01
Sales Agreement with Alliance Global Partners |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Proceeds from issuance of common stock | $ 15,400 |  |  |
Sale of common stock | 4,501,000 |  |  |
Additional shares available for future sales | $ 6,600 |  |  |
Sales Agreement with Alliance Global Partners | Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Proceeds from issuance of common stock | $ 22,000 |  |  |

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