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Note 7 - Income Taxes (Details Textual) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred Tax Assets, Valuation Allowance, Total | $ 302,000 | $ 235,000
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability | 9,000,000 |
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Noncurrent | 5,100,000 |
Domestic Tax Authority [Member] |  |
Deferred Tax Assets, Valuation Allowance, Total | 0 |
Operating Loss Carryforwards | 446,000 |
Operating Loss Carryforwards, Subject to Expiration | $ 2,300,000 |

X
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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 tax liability from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act. + 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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- 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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