Quarterly report pursuant to Section 13 or 15(d)

NOTES PAYABLE (Details 4)

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NOTES PAYABLE (Details 4) - Amended and Restated 10% Senior Secured Convertible Debentures [Member] - Conversion Feature Liabilities [Member] - Other Current Liabilities [Member] - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation Calculation Roll Forward    
Balance, beginning of period $ 7 $ 1
Fair value at debt modification date   118
Change in fair value included in the statement of comprehensive loss $ (7) (112)
Balance, end of period   $ 7