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Note 18 - Subsequent Events (Details Textual) - $ / shares
3 Months Ended
May 16, 2022
May 12, 2022
Mar. 31, 2022
Mar. 08, 2022
Share Price (in dollars per share)       $ 2.23
Restricted Stock [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     3 years  
Subsequent Event [Member]        
Share Price (in dollars per share)   $ 1.95    
Subsequent Event [Member] | Restricted Stock [Member] | Share-Based Payment Arrangement, Employee [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   1,250    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years    
Subsequent Event [Member] | Common Stock [Member] | Director [Member] | Stock Issued in Lieu of Board Fees [Member]        
Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture (in shares) 1,422 7,695