Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Cash and Cash Equivalents (Details Textual)

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Note 3 - Cash and Cash Equivalents (Details Textual) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Cash, Ending Balance $ 327 $ 621
Cash Equivalents, at Carrying Value, Total $ 26,571 $ 14,678