Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Liquidity and Uncertainties (Details Textual)

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Note 2 - Liquidity and Uncertainties (Details Textual) - USD ($)
1 Months Ended 9 Months Ended
Jun. 30, 2020
Apr. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Proceeds from Issuance of Common Stock     $ 18,043,284 $ 1,974,547  
Cash and Cash Equivalents, at Carrying Value, Ending Balance     14,448,903   $ 1,516,272
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total     $ 12,932,631 $ 967,820  
April 6, 2020 Public Offering [Member]          
Proceeds from Issuance of Common Stock   $ 4,600,000      
June 30, 2020 Public Offering [Member]          
Proceeds from Issuance of Common Stock $ 13,400,000