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Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2023 | Oct. 02, 2022 | Oct. 01, 2023 | Oct. 02, 2022
Income Tax Expense (Benefit) | $ 4 | $ 3 | $ 4 | $ 19
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent |  |  | 2.67% |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | 21.00% |

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