v3.25.2
Note 16 - Subsequent Events (Details Textual)
6 Months Ended
Aug. 18, 2025
EUR (€)
Aug. 15, 2025
USD ($)
$ / shares
Aug. 15, 2025
EUR (€)
Aug. 06, 2025
USD ($)
May 27, 2025
USD ($)
May 26, 2025
USD ($)
Apr. 24, 2025
USD ($)
Mar. 25, 2025
USD ($)
Mar. 25, 2025
EUR (€)
Feb. 12, 2025
EUR (€)
Jun. 30, 2025
EUR (€)
Jun. 30, 2024
EUR (€)
Jun. 30, 2025
USD ($)
Jun. 30, 2025
EUR (€)
Dec. 31, 2024
USD ($)
Feb. 05, 2024
USD ($)
Dec. 20, 2022
USD ($)
Dec. 08, 2022
USD ($)
Dec. 07, 2022
USD ($)
Debt Instrument, Face Amount                           € 30,906 $ 27,656,000        
Proceeds from Convertible Debt | €                     € 2,904,000 € 7,000,000              
Subsequent Event [Member]                                      
Foreign Currency Exchange Rate, Translation   1.1685                                  
Debenture, Tranche One [Member]                                      
Debt Instrument, Face Amount                         $ 11,100,000   $ 11,100,000       $ 11,100,000
Debt Instrument, Default Rate                         12.00% 12.00% 12.00%        
Debenture, Tranche Two [Member]                                      
Debt Instrument, Face Amount                         $ 8,150,000   $ 8,150,000     $ 10,000,000  
Debt Instrument, Default Rate                         12.00% 12.00% 12.00%        
Debenture, Tranche Three [Member]                                      
Debt Instrument, Face Amount                         $ 750,000   $ 750,000   $ 10,000,000    
Debt Instrument, Default Rate                         12.00% 12.00% 12.00%        
Debenture, Tranche Four [Member]                                      
Debt Instrument, Face Amount                         $ 4,318,000   $ 4,318,000 $ 4,317,600,000,000      
Debt Instrument, Default Rate                         18.00% 18.00% 18.00%        
Omnibus Amendment to Transaction Documents [Member]                                      
Proceeds from Convertible Debt         $ 750,000   $ 500,000   € 1,000,000 € 1,000,000                  
Omnibus Amendment to Transaction Documents [Member] | Yorkville [Member]                                      
Debt Instrument, Face Amount             $ 500,000 $ 1,000,000         $ 1,560,000            
Proceeds from Convertible Debt           $ 750,000   $ 1,000,000                      
Omnibus Amendment to Transaction Documents [Member] | Yorkville [Member] | Subsequent Event [Member]                                      
Debt Instrument, Face Amount       $ 190,000                              
Proceeds from Convertible Debt € 300,000 $ 350,540 € 300,000 $ 190,000                              
Debt Instrument, Interest Rate, Stated Percentage   12.00%   12.00%                              
Debt Instrument, Default Rate   18.00%   18.00%                              
Debt Instrument, Convertible, Conversion Price | $ / shares   $ 18.75                                  
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger   85.00% 85.00% 85.00%