v3.26.3
Note 9 - Subsequent Events (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Aug. 19, 2026
Aug. 12, 2026
Aug. 01, 2026
Jun. 23, 2026
Sep. 14, 2026
Jul. 31, 2026
Jul. 31, 2025
Apr. 30, 2026
Proceeds from Issuance of Common Stock           $ 10,233 $ 0  
Conversion of Streeterville Note into Common Stock [Member]                
Debt Conversion, Original Debt, Principal               $ 2,060,000
Debt Conversion, Converted Instrument, Shares Issued (in shares)       78,103       597,578
ATM Offering [Member]                
Stock Issued During Period, Shares, New Issues (in shares)           4,920    
Proceeds from Issuance of Common Stock           $ 10,000    
Subsequent Event [Member] | Conversion of Streeterville Note into Common Stock [Member]                
Debt Conversion, Original Debt, Principal $ 200,000   $ 200,000          
Debt Conversion, Converted Instrument, Shares Issued (in shares) 95,602   95,602          
Subsequent Event [Member] | ATM Offering [Member]                
Stock Issued During Period, Shares, New Issues (in shares)         397,762      
Proceeds from Issuance of Common Stock         $ 1,200,000      
Subsequent Event [Member] | Private Placement [Member]                
Stock Issued During Period, Shares, New Issues (in shares)   411,522            
Proceeds from Issuance of Common Stock   $ 1,000,000            
Shares Issued, Price Per Share (in dollars per share)   $ 2.43