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Note 13 - Related Party Transactions (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Jun. 08, 2023
May 01, 2023
Dec. 31, 2023
Dec. 31, 2022
Sep. 30, 2024
Sep. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures (in shares) 327,421          
Director [Member]            
Long-Term Debt     $ 175 $ 175 $ 175 $ 175
Accounts Payable     0 2    
Executive Officer [Member] | Consulting Fees [Member]            
Accounts Payable     106 56    
Related Party Transaction, Amounts of Transaction     $ 222 420    
Stock Issued During Period, Shares, Issued for Services (in shares)   29,636        
Related Party [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures (in shares) 288,794          
Related Party [Member] | Consulting Fees [Member]            
Stock Issued During Period, Shares, Issued for Services (in shares)   29,636        
Conversion of Director Notes Into Common Stock [Member]            
Debt Conversion, Original Debt, Amount       $ 320    
Debt Conversion, Converted Instrument, Shares Issued (in shares)       11,088