Note 2 - Business Acquisitions, Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 28, 2026	Dec. 29, 2025
Gross Carrying Amount, finite-lived intangible assets	$ 336,534	$ 339,306
Accumulated Amortization	264,931	260,034
Developed Technology Rights [Member]
Gross Carrying Amount, finite-lived intangible assets	238,992	241,038
Accumulated Amortization	$ 202,834	199,776
Finite-Lived Intangible Asset, Useful Life (Year)	3 years 4 months 24 days
Customer Relationships [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 75,168	75,677
Accumulated Amortization	$ 45,651	44,210
Finite-Lived Intangible Asset, Useful Life (Year)	5 years 2 months 12 days
Trade Names [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 22,155	22,366
Accumulated Amortization	$ 16,243	15,845
Finite-Lived Intangible Asset, Useful Life (Year)	4 years 6 months
Noncompete Agreements [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 219	225
Accumulated Amortization	$ 203	$ 203
Finite-Lived Intangible Asset, Useful Life (Year)	9 months 18 days