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Note 1 - Summary of Significant Accounting Policies - Reported Share-based Compensation in Consolidated Financial Statements (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 27, 2025 | Sep. 28, 2024 | Sep. 27, 2025 | Sep. 28, 2024
Share Based Compensation Expense | $ 5,659 | $ 5,248 | $ 17,564 | $ 15,459
Income tax effect | 98 | 12 | (293) | 223
Total share-based compensation, net | 5,757 | 5,260 | 17,271 | 15,682
Cost of Sales [Member] |  |  |  |
Share Based Compensation Expense | 341 | 270 | 1,064 | 759
Research and Development Expense [Member] |  |  |  |
Share Based Compensation Expense | 1,356 | 765 | 4,089 | 2,600
Selling, General and Administrative Expenses [Member] |  |  |  |
Share Based Compensation Expense | $ 3,962 | $ 4,213 | $ 12,411 | $ 12,100

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