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Note 5 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Income Tax Expense (Benefit), Continuing Operations, Global Intangible Low-taxed Income | $ 325 | $ 400
Effective Income Tax Rate Reconciliation, Percent, Total | 56.60% | 51.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00%
Deferred Tax Assets, Net, Total | $ 3,766 | $ 4,468
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 46 |
Unrecognized Tax Benefits, Income Tax Penalties Expense | 800 | 3
Unrecognized Tax Benefits, Interest on Income Taxes Expense | 300 | 700
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 14 | 13
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | $ 17 | $ 16
Open Tax Year | 2019 2020 2021 2022 |
Domestic Tax Authority [Member] |  |
Deferred Tax Assets, Net, Total | $ 2,200 |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 0 |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | $ 0 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |
Operating Loss Carryforwards | $ 5,100 |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 1,100 |
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration | 630 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Research Tax Credit Carryforward [Member] |  |
Tax Credit Carryforward, Amount | 240 |
State and Local Jurisdiction [Member] |  |
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration | 88,000 |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 14 |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 17 |
Foreign Tax Authority [Member] |  |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 0 |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 0 |
Foreign Tax Authority [Member] | Brazilian Federal Revenue Office [Member] |  |
Operating Loss Carryforwards, Not Subject to Expiration | 1,900 |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 662 |
Foreign Tax Authority [Member] | Australian Taxation Office [Member] |  |
Operating Loss Carryforwards, Not Subject to Expiration | 1,200 |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 346 |
Foreign Tax Authority [Member] | State Administration of Taxation, China [Member] |  |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 264 |
Operating Loss Carryforwards, Subject to Expiration | 1,100 |
Foreign Tax Authority [Member] | Mexican Tax Authority [Member] |  |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 187 |
Operating Loss Carryforwards, Subject to Expiration | 622 |
Foreign Tax Authority [Member] | National Tax Agency, Japan [Member] |  |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 4 |
Operating Loss Carryforwards, Subject to Expiration | $ 11 |

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