Note 2 - Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Gross Carrying Amount, finite-lived intangible assets	$ 326,438	$ 329,301
Accumulated Amortization	185,506	177,531
Developed Technology Rights [Member]
Gross Carrying Amount, finite-lived intangible assets	231,681	233,623
Accumulated Amortization	$ 143,340	137,168
Remaining Useful Life (Year)	4 years
Customer Relationships [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 73,285	73,759
Accumulated Amortization	$ 30,431	28,932
Remaining Useful Life (Year)	6 years 9 months 18 days
Trade Names [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 21,139	21,569
Accumulated Amortization	$ 11,516	11,231
Remaining Useful Life (Year)	5 years 2 months 12 days
Order or Production Backlog [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 100	100
Accumulated Amortization	$ 50	25
Remaining Useful Life (Year)	6 months
Noncompete Agreements [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 233	250
Accumulated Amortization	$ 169	$ 175
Remaining Useful Life (Year)	2 years 9 months 18 days