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Note 17 - Redeemable Class A Preferred Stock (Details Textual)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended 18 Months Ended
Jun. 30, 2023
USD ($)
$ / shares
shares
Jun. 30, 2023
$ / shares
shares
Jun. 30, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
shares
Preferred Stock, Shares Outstanding (in shares) 0 0 0 149,733
Preferred Stock, Convertible, Conversion Ratio 6.25 6.25 6.25  
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares $ 4.00 $ 4.00 $ 4.00  
Preferred Stock Converted into Common Stock [Member]        
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares $ 4.00 $ 4.00 $ 4.00  
Conversion of Stock, Shares Converted (in shares) 30,000 149,733 149,733  
Conversion of Stock, Shares Issued (in shares) 187,500 935,831 935,831  
Conversion of Stock, Amount Issued | $ $ 0.7   $ 3.7