Annual report pursuant to Section 13 and 15(d)

Note 18 - Equity (Details Textual)

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Note 18 - Equity (Details Textual)
 12 Months Ended
Apr. 11, 2023
USD ($)
$ / shares
shares
Apr. 05, 2023
USD ($)
$ / shares
shares
Dec. 14, 2022
USD ($)
$ / shares
shares
Dec. 09, 2022
$ / shares
shares
Jan. 05, 2022
USD ($)
Jan. 02, 2022
USD ($)
$ / shares
shares
May 28, 2021
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
Preferred Stock, Shares Authorized (in shares) | shares               3,333,333 3,333,333  
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares               $ 0.0001 $ 0.0001  
Preferred Stock, Shares Outstanding (in shares) | shares               0    
Common Stock, Shares Authorized (in shares) | shares               50,000,000 50,000,000  
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares               $ 0.0001 $ 0.0001  
Common Stock, Shares, Issued (in shares) | shares               18,724,596 14,402,025  
Payments of Stock Issuance Costs | $               $ (0) $ 754,000  
Proceeds from Issuance of Common Stock | $               6,000,000 13,832,000  
December 2022 Private Placement [Member]                    
Number of Warrants Per Unit (in shares) | shares     1 1            
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares     1 1            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 1.75 $ 1.75            
Warrants and Rights Outstanding, Term (Year)     3 years 3 years            
December 2022 Private Placement [Member] | Dawson James [Member]                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 1.75            
Warrants and Rights Outstanding, Term (Year)       3 years            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares       549,051            
April 2023 Private Placement [Member]                    
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.0001 $ 0.0001                
Stock Issued During Period, Shares, New Issues (in shares) | shares 3,428,571 3,428,571                
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 1.75 $ 1.75                
Proceeds from Issuance of Private Placement | $ $ 6,000,000                  
Stock Issued During Period, Value, New Issues | $               $ 6,000,000    
Proceeds from Issuance of Common Stock | $   $ 6,000,000                
December 2022 Private Placement [Member]                    
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.0001              
Shares Issued, Price Per Share (in dollars per share) | $ / shares     $ 1.75 $ 1.75            
Equity Offering, Units Issued (in shares) | shares     4,575,429 4,575,429            
Number of Shares Per Unit Issued (in shares) | shares     1 1            
Proceeds From Equity Offering | $     $ 8,000,000              
Stock Issued During Period, Value, New Issues | $                 7,472,000  
December 2022 Private Placement [Member] | Dawson James [Member]                    
Placement Agent Fee, Percent       6.00%            
December 2022 Private Placement [Member] | Placement Agency Agreement [Member]                    
Placement Agent Fee, Percent       3.00%            
January 2022 Private Placement [Member]                    
Stock Issued During Period, Shares, New Issues (in shares) | shares           2,229,950        
Shares Issued, Price Per Share (in dollars per share) | $ / shares           $ 3.24        
Stock Issued During Period, Value, New Issues | $         $ 7,200,000 $ 7,225,038     $ 7,005,000  
Payments of Stock Issuance Costs | $           220,000        
Proceeds from Issuance of Common Stock | $           $ 7,000,000        
Stock Subscription Payable, Current | $                   $ 1,400,000
Percentage of Funds Raised on Offering           73.00%        
Reverse Stock Split [Member]                    
Stockholders' Equity Note, Stock Split, Conversion Ratio             5