Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Liquidity and Management Plans (Details Textual)

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Note 3 - Liquidity and Management Plans (Details Textual) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Retained Earnings (Accumulated Deficit), Ending Balance $ (75,805) $ (68,909)