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Note 1 - Organization and Business and Financial Condition (Details Textual)
3 Months Ended 9 Months Ended 12 Months Ended
Jul. 17, 2019
Sep. 30, 2019
Sep. 30, 2020
Dec. 31, 2019
Number of Operating Segments     1 1
Stockholders' Equity Note, Stock Split, Conversion Ratio   20    
Reverse Stock Split [Member]        
Stockholders' Equity Note, Stock Split, Conversion Ratio 20