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Note 16 - Subsequent Events (Details Textual) - USD ($)
$ / shares in Units, shares in Millions
12 Months Ended
Mar. 31, 2026
Mar. 04, 2026
Feb. 03, 2026
Sep. 11, 2025
Dec. 31, 2025
Dec. 31, 2024
Apr. 03, 2024
Common Stock, Par or Stated Value Per Share (in dollars per share)         $ 0.001 $ 0.001 $ 0.001
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)         $ 1.21 $ 1.41  
Proceeds from Issuance Notes and Warrants         $ 1,333,000 $ 0  
Subsequent Event [Member] | Warrants Issued With Convertible Notes [Member]              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)   9.4          
Secured Promissory Notes [Member] | Subsequent Event [Member]              
Common Stock, Par or Stated Value Per Share (in dollars per share)     $ 0.001        
Secured Promissory Notes [Member] | Subsequent Event [Member] | Smith [Member]              
Debt Instrument, Interest Rate, Stated Percentage     15.00%        
Proceeds from Issuance of Debt     $ 814,979        
Secured Promissory Notes [Member] | Subsequent Event [Member] | Smith [Member] | Unregistered Common Stock Warrants [Member]              
Warrants and Rights Outstanding, Term (Year)     5 years        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)     $ 0.68        
Proceeds from Issuance Notes and Warrants     $ 1,000,000        
Proceeds from Issuance of Warrants     $ 185,021        
Secured Promissory Notes [Member] | Subsequent Event [Member] | Smith [Member] | Unregistered Common Stock Warrants [Member] | Minimum [Member]              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)     $ 0.68        
Convertible Notes [Member] | Subsequent Event [Member]              
Debt Instrument, Interest Rate, Stated Percentage   8.00%          
Proceeds from Issuance of Debt   $ 4,900,000          
Debt Instrument, Face Amount   $ 4,900,000          
Debt Instrument, Convertible, Conversion Price (in dollars per share)   $ 0.68          
Debt Instrument, Interest Rate, Default   12.00%          
Debt Instrument, Convertible, Period After Issuance (Month)   6 months          
The September 11, 2025 Notes [Member]              
Debt Instrument, Interest Rate, Stated Percentage       15.00%      
The September 11, 2025 Notes [Member] | Smith [Member]              
Proceeds from Issuance of Debt       $ 700,000      
The September 11, 2025 Notes [Member] | Smith [Member] | Maximum [Member] | Forecast [Member]              
Repayments of Debt $ 2,200,000