Note 6 - Income Taxes (Details Textual) - USD ($)	Sep. 30, 2026	Apr. 30, 2025
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Noncurrent		$ 5,100,000
Income Tax Jurisdiction, Domestic Federal [Member]
Deferred Tax Assets, Valuation Allowance, Total	$ 0
Operating Loss Carryforwards	753,000
Income Tax Jurisdiction, Domestic State and Local [Member]
Operating Loss Carryforwards	467,000
Income Tax Jurisdiction, Foreign [Member]
Operating Loss Carryforwards	$ 3,200,000