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Note 1 - Summary of Significant Accounting Policies - Reported Share-based Compensation in Consolidated Financial Statements 2 (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Share Based Compensation Expense $ 6,593 $ 5,675 $ 12,869 $ 11,905
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfSalesMember        
Share Based Compensation Expense 219 398 493 723
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpenseMember        
Share Based Compensation Expense 1,073 1,514 2,041 2,733
Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpensesMember        
Share Based Compensation Expense $ 5,301 $ 3,763 $ 10,335 $ 8,449