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Note 20 - Subsequent Events (Details Textual) - shares
6 Months Ended
Aug. 12, 2021
Jun. 30, 2021
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)   3 years
Subsequent Event [Member] | Restricted Stock [Member] | Share-based Payment Arrangement, Employee [Member]    
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares) 3,750  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 3 years  
Subsequent Event [Member] | Director [Member]    
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares) 1,560