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Note 23 - Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Restricted Stock Unit Activity [Line Items]    
Number of Restricted Units, Outstanding 721,801  
Number of Restricted Units, Granted 351,909  
Number of Restricted Units, Vested 692,750  
Number of Restricted Units, Outstanding 380,960 721,801
Weighted-Average Grant Date Fair Values, Outstanding $ 3.25  
Weighted-Average Grant Date Fair Values, Granted 2.91 $ 2.93
Weighted-Average Grant Date Fair Values, Vested 3.05  
Weighted-Average Grant Date Fair Values, Outstanding $ 3.31 $ 3.25