Note 2 - Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Gross Carrying Amount, finite-lived intangible assets	$ 309,615	$ 316,232
Accumulated Amortization	169,511	138,912
Developed Technology Rights [Member]
Gross Carrying Amount, finite-lived intangible assets	224,253	229,131
Accumulated Amortization	$ 128,938	104,855
Remaining Useful Life (Year)	3 years 7 months 6 days
Customer Relationships [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 64,632	65,916
Accumulated Amortization	$ 31,015	26,189
Remaining Useful Life (Year)	6 years 6 months
Trade Names [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 20,461	20,877
Accumulated Amortization	$ 9,397	7,714
Remaining Useful Life (Year)	6 years 4 months 24 days
Noncompete Agreements [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 269	308
Accumulated Amortization	$ 161	$ 154
Remaining Useful Life (Year)	4 years