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Note 18 - NASDAQ Capital Market Listing Requirements (Details Textual) - USD ($)
1 Months Ended 9 Months Ended
Jul. 23, 2020
Jul. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Proceeds from Issuance or Sale of Equity, Total $ 22,700,000 $ 22,700,000    
Repayments of Convertible Debt $ 4,200,000   $ 4,509,250 $ 707,000