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Note 15 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 28, 2020 | Mar. 30, 2019
Income Tax Expense (Benefit), Total | $ (2,240) | $ (274)
Income Tax Expense (Benefit), Total |  | $ 600
Effective Income Tax Rate Reconciliation, Percent, Total | 27.40% |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 27.00% | 28.10%
Domestic Tax Authority [Member] | Canada Revenue Agency [Member] |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 28.10% | 26.50%
Domestic Tax Authority [Member] | Ministry of Finance, Republic of Serbia [Member] |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 15.50% | 15.10%

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