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Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Income Tax Expense (Benefit) | $ 1,892 | $ 1,951
Operating Loss Carryforwards | 1,000 |
Deferred Tax Assets, Valuation Allowance | 2,404 | $ 2,441
Unrecognized Tax Benefits, Ending Balance | 0 |
General Business Tax Credit Carryforward [Member] |  |
Tax Credit Carryforward, Amount | $ 3,200 |
Domestic Tax Jurisdiction [Member] |  |
Open Tax Year | 2002 2005 2006 2007 2009 2011 2012 2013 2014 2015 2021 2022 2023 |
Domestic Tax Jurisdiction [Member] | Internal Revenue Service (IRS) [Member] |  |
Operating Loss Carryforwards | $ 15,000 |
Open Tax Year | 2002 2005 2006 2007 2009 2011 2012 2013 2014 2015 2021 2022 2023 |
Foreign Tax Jurisdiction [Member] |  |
Deferred Tax Assets, Valuation Allowance | $ 0 |
Open Tax Year | 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 |
Foreign Tax Jurisdiction [Member] | His Majesty's Revenue and Customs (HMRC) [Member] |  |
Operating Loss Carryforwards | $ 9,600 |
State and Local Jurisdiction [Member] |  |
Open Tax Year | 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 |

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