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Note 7 - Income Taxes (Details Textual) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
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Deferred Tax Assets, Valuation Allowance, Total | $ 391,000 | $ 302,000
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Noncurrent | 5,100,000 |
Domestic Tax Jurisdiction [Member] |  |
Deferred Tax Assets, Valuation Allowance, Total | 0 |
Operating Loss Carryforwards | 390,000 |
State and Local Jurisdiction [Member] |  |
Operating Loss Carryforwards, Subject to Expiration | 457,000 |
Foreign Tax Jurisdiction [Member] |  |
Operating Loss Carryforwards | $ 2,300,000 |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
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- Definition Amount of tax liability from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/740/tableOfContent + Details
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