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Note 10 - Income Taxes (Details Textual) - USD ($)
Sep. 30, 2022
Jun. 30, 2022
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]    
Operating Loss Carryforwards $ 0  
Tax Credit Carryforward, Amount 0  
Foreign Tax Authority [Member] | Canada Revenue Agency [Member]    
Operating Loss Carryforwards 15,000  
Tax Credit Carryforward, Amount 0  
Deferred Tax Assets, Valuation Allowance $ 4,000 $ 0