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Note 8 - Income Taxes - Deferred Income Taxes (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Net deferred tax assets | $ 329,121 | $ 300,050
Casualty Loss [Member] |  |
Net deferred tax liabilities | (77,714) | (77,714)
Deferred Gain [Member] |  |
Net deferred tax liabilities | (109,950) | (109,950)
Net Operating Loss Carryover [Member] |  |
Net deferred tax assets | 0 | 6,487
Percentage Depletion Carryover [Member] |  |
Net deferred tax assets | 0 | 22,951
Stock-based Compensation [Member] |  |
Net deferred tax assets | $ 516,785 | $ 458,276

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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(b)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-6 + Details
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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