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Note 8 - Income Taxes - Deferred Income Taxes (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Net deferred tax liabilities $ (109,954) $ 0
Deferred tax assets (liabilities) (109,954) 0
Net deferred tax liabilities   231,744
Casualty Loss [Member]    
Net deferred tax liabilities (36,635) (77,714)
Deferred Gain [Member]    
Net deferred tax liabilities (73,319) (109,950)
Net Operating Loss Carryover [Member]    
Net deferred tax assets 0 59,807
Percentage Depletion Carryover [Member]    
Net deferred tax assets 0 0
Stock-based Compensation [Member]    
Net deferred tax assets $ 0 $ 359,601