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Note 2 - Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 27, 2025
Dec. 28, 2024
Gross Carrying Amount, finite-lived intangible assets $ 339,306 $ 322,608
Accumulated Amortization 260,034 211,891
Developed Technology Rights [Member]    
Gross Carrying Amount, finite-lived intangible assets 241,038 228,789
Accumulated Amortization $ 199,776 163,453
Remaining Useful Life (Year) 3 years 6 months  
Customer Relationships [Member]    
Gross Carrying Amount, finite-lived intangible assets $ 75,677 72,570
Accumulated Amortization $ 44,210 35,229
Remaining Useful Life (Year) 5 years 3 months 18 days  
Trade Names [Member]    
Gross Carrying Amount, finite-lived intangible assets $ 22,366 20,926
Accumulated Amortization $ 15,845 12,930
Remaining Useful Life (Year) 4 years 7 months 6 days  
Order or Production Backlog [Member]    
Gross Carrying Amount, finite-lived intangible assets $ 0 100
Accumulated Amortization $ 0 100
Remaining Useful Life (Year) 0 years  
Noncompete Agreements [Member]    
Gross Carrying Amount, finite-lived intangible assets $ 225 223
Accumulated Amortization $ 203 $ 179
Remaining Useful Life (Year) 1 year