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Note 7 - Stockholders' Equity (Deficit) - Schedule of Dividends (Details) - USD ($)
 3 Months Ended 6 Months Ended
May 05, 2025
Mar. 17, 2025
Mar. 06, 2024
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
May 04, 2025
Mar. 16, 2025
Dec. 31, 2024
Mar. 05, 2024
Dec. 31, 2023
Deemed dividends on Series F Preferred Stock, Series B and F Warrants and warrant exchange       $ 3,677,811 $ 7,751 $ 4,734,143 $ 5,257,455          
Series F Warrants [Member]                        
Warrants, triggered (in shares) 593,247 593,247 54,695                  
Warrants, exercise price (in dollars per share) $ 0.83 $ 1.2 $ 30 $ 0.9529 [1]   $ 0.9529 [1]   $ 1.1   $ 4.96    
Warrants, deemed dividends $ 36,504 $ 79,695 $ 147,030                  
Total Warrant Deemed Dividends           $ 116,199 7,751 [2]          
Deemed dividends on Series F Preferred Stock, Series B and F Warrants and warrant exchange             5,249,704          
Series F Preferred Stock and Series F Warrants After Modification [Member]                        
Deemed dividends on Series F Preferred Stock, Series B and F Warrants and warrant exchange             $ 5,257,455          
Series B Warrants [Member]                        
Warrants, triggered (in shares) 6,777,101                      
Warrants, exercise price (in dollars per share) $ 0.83             1.94        
Warrants, deemed dividends $ 2,426,968                      
Total Warrant Deemed Dividends           2,426,968            
Series F PS, Series B, and Series F Warrants [Member]                        
Deemed dividends on Series F Preferred Stock, Series B and F Warrants and warrant exchange           $ 4,625,675            
Minimum [Member] | Series F Warrants [Member]                        
Warrants, exercise price (in dollars per share)                 $ 2.22   $ 60.29  
Maximum [Member] | Series F Warrants [Member]                        
Warrants, exercise price (in dollars per share)                 5.25   124.5  
Series F Convertible Preferred Stock [Member]                        
Preferred stock, triggered (in shares) 1,045,402 5,025 3,945                  
Conversion price (in dollars per share) $ 0.83 $ 1.2 $ 30 $ 0 $ 0 $ 0 $ 0 $ 1.1   $ 0   $ 0
Preferred stock deemed dividend $ 1,105,871 $ 976,637 $ 5,102,674                  
Total Preferred Stock Deemed Dividends           $ 2,082,508            
Series F Convertible Preferred Stock [Member] | Minimum [Member]                        
Conversion price (in dollars per share)                 2.22   60.29  
Series F Convertible Preferred Stock [Member] | Maximum [Member]                        
Conversion price (in dollars per share)                 $ 5.25   $ 124.5  
[1] Reflects the exercise price after the March 2025 Down Round Trigger on March 17, 2025 as described above.
[2] On May 31, 2024, the Company agreed to reduce the exercise price of a warrant held by Alpha originally issued in June 2023 from $380.00 to $30.00. As result, the Company recorded a deemed dividend of $7,751 for the incremental value due to the modification.