Quarterly report pursuant to Section 13 or 15(d)

Schedule of Fair Value Measurement Hierarchy of Derivative Liability (Details)

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Schedule of Fair Value Measurement Hierarchy of Derivative Liability (Details) - Common Stock Warrants [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Beginning balance $ (347) $ (1,238)
Change in fair value 41 (242)
Exercise of warrants   195
Ending balance $ (306) $ (1,285)