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Note 2 - Business Acquisitions, Goodwill and Purchased Intangible Assets - Purchase Price Allocation (Details) - USD ($) $ in Thousands | Sep. 27, 2025 | Jan. 07, 2025 | Dec. 28, 2024 | [1] | Dec. 30, 2023
--- | --- | --- | --- | --- | ---
Goodwill | $ 282,293 |  | $ 234,639 | $ 241,658
Tignis, Inc [Member] |  |  |  |
Current assets, including cash received |  | $ 293 |  |
Property, plant and equipment |  | 19 |  |
Other assets |  | 56 |  |
Intangible assets |  | 2,900 |  |
Goodwill |  | 33,688 |  |
Total assets acquired |  | 36,956 |  |
Liabilities assumed |  | (349) |  |
Net assets acquired |  | $ 36,607 |  |
[1] | Derived from December 28, 2024, audited financial statements

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