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Note 5 - Acquired Intangible Assets and Goodwill - Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 25, 2021
--- | --- | ---
Gross Carrying Amount | $ 69,292 | $ 56,392
Accumulated Amortization | 38,172 | 35,614
Patents [Member] |  |
Gross Carrying Amount | 24,715 | 24,715
Accumulated Amortization | 24,270 | 24,068
Noncompete Agreements [Member] |  |
Gross Carrying Amount | 2,749 | 2,749
Accumulated Amortization | 2,749 | 2,749
Customer Lists [Member] |  |
Gross Carrying Amount | 22,017 | 18,017
Accumulated Amortization | 9,783 | 8,100
Trademarks [Member] |  |
Gross Carrying Amount | 18,636 | 9,736
Accumulated Amortization | 802 | 266
Developed Technology Rights [Member] |  |
Gross Carrying Amount | 475 | 475
Accumulated Amortization | 396 | 301
Licensing Agreements [Member] |  |
Gross Carrying Amount | 700 | 700
Accumulated Amortization | $ 172 | $ 130

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