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Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred Tax Assets, Valuation Allowance, Total | $ 340 | $ 289
Domestic Tax Authority [Member] |  |
Deferred Tax Assets, Valuation Allowance, Total | 0 |
Operating Loss Carryforwards, Total | 3,600 |
State and Local Jurisdiction [Member] |  |
Operating Loss Carryforwards, Total | 3,500 |
Foreign Tax Authority [Member] |  |
Operating Loss Carryforwards, Total | $ 2,800 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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- Details
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