v3.26.1
Note 3 - Sale of Stock for Cash (Details Textual) - USD ($)
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 20, 2026
Dec. 13, 2022
Proceeds from Issuance of Common Stock $ 256,000 $ (15,000)    
The Six Month Warrants Issued in Unit Offerings [Member]        
Warrants and Rights Outstanding, Term (Month) 6 months      
The Five Year Warrants Issued in Unit Offerings [Member]        
Warrants and Rights Outstanding, Term (Month) 5 years      
Unit Offering [Member]        
Stock Issued During Period, Shares, New Issues (in shares) 555,556 0    
Proceeds From Issuance of Common Stock, Gross $ 100,000      
Equity Offering, Financing Fee $ 15,000 $ 15,000    
Lincoln Park Capital Fund, LLC [Member]        
Stock Purchase Agreement, Maximum Amount of Common Stock       $ 10,000,000
Stock Issued During Period, Shares, New Issues (in shares) 984,188 0    
Proceeds from Issuance of Common Stock $ 171,000      
Clearthink Capital Partners, LLC [Member]        
Stock Purchase Agreement, Maximum Amount of Common Stock     $ 10,000,000  
Value of Stock Directed Amount to Purchase     $ 500,000  
Percent of Daily Average Shares Traded     300.00%  
Value of Average Shares Traded     $ 25,000  
Stock Issued During Period, Shares, Commitment Fee (in shares) 500,000      
Shares Issued, Price Per Share (in dollars per share) $ 0.17      
Stock Issued During Period, Value, Financing Fees $ 85,000