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
Sep. 30, 2019
Dec. 31, 2018
Retained Earnings (Accumulated Deficit), Ending Balance $ (54,137) $ (45,968)