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Note 20 - Subsequent Events (Details Textual) - Reverse Stock Split [Member] - Subsequent Event [Member]
Nov. 15, 2022
Nov. 10, 2022
Stockholders' Equity Note, Stock Split, Conversion Ratio 35  
Minimum [Member]    
Stockholders' Equity Note, Stock Split, Conversion Ratio   10
Maximum [Member]    
Stockholders' Equity Note, Stock Split, Conversion Ratio   35