v3.26.1
Note 6 - Income Taxes (Details Textual) - USD ($)
12 Months Ended
Apr. 30, 2026
Apr. 30, 2026
Apr. 30, 2025
Income Tax Expense (Benefit)   $ 0 $ 0
Operating Loss Carryforwards, Not Subject to Expiration $ 4,595,000 4,595,000  
Unrecognized Tax Benefits, Income Tax Penalties Accrued $ 0 0  
Open Tax Year 2022 2023 2024 2025    
Income Tax Jurisdiction, Domestic Federal [Member]      
Operating Loss Carryforwards, Subject to Expiration $ 9,440,000 9,440,000  
Income Tax Jurisdiction, Domestic State and Local [Member]      
Operating Loss Carryforwards, Subject to Expiration $ 4,845,000 $ 4,845,000