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Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 25, 2021 | Dec. 26, 2020
Inventory Valuation Reserves | $ 1,568 | $ 748 |
Impairment, Long-Lived Asset, Held-for-Use, Total | 0 | 0 | $ 0
Research and Development Expense, Total | $ 2,700 | 2,000 | $ 1,500
Licensing Agreements [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 17 years |  |
Developed Technology Rights [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |  |
Trademarks [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |  |
Noncompete Agreements [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |  |
Minimum [Member] | Customer Lists [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |
Minimum [Member] | Patents [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |  |
Maximum [Member] | Customer Lists [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |  |
Maximum [Member] | Patents [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |  |
Building [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 20 years |  |
Building [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 30 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 15 years |  |
Tools, Dies and Molds [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 2 years |  |
Tools, Dies and Molds [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |
Book Overdrafts Reclassified to Accrued Liabilities [Member] |  |  |
Bank Overdrafts | $ 6,900 | $ 4,700 |

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