Note 3 - Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 28, 2019	Dec. 29, 2018
Accumulated Amortization		$ 74,945	$ 35,203
Gross Carrying Amount, finite-lived and indefinite-lived intangible assets		329,132	317,857
Developed Technology Rights [Member]
Gross Carrying Amount, finite-lived intangible assets		227,619	214,266
Accumulated Amortization		$ 49,805	21,197
Remaining Useful Life (Year)		6 years 219 days
Customer Relationships [Member]
Gross Carrying Amount, finite-lived intangible assets		$ 72,251	73,104
Accumulated Amortization		$ 14,824	7,378
Remaining Useful Life (Year)		9 years 109 days
Trade Names [Member]
Gross Carrying Amount, finite-lived intangible assets		$ 22,612	22,701
Accumulated Amortization		$ 3,892	1,807
Remaining Useful Life (Year)		9 years 182 days
Order or Production Backlog [Member]
Gross Carrying Amount, finite-lived intangible assets		$ 6,328	6,372
Accumulated Amortization		$ 6,328	4,696
Remaining Useful Life (Year)
Off-Market Favorable Lease [Member]
Gross Carrying Amount, finite-lived intangible assets	[1]		1,100
Accumulated Amortization	[1]		62
Remaining Useful Life (Year)	[1]
Noncompete Agreements [Member]
Gross Carrying Amount, finite-lived intangible assets		$ 322	314
Accumulated Amortization		$ 96	$ 63
Remaining Useful Life (Year)		7 years

[1] Favorable leases were reclassified to operating lease right of use assets on December 30, 2018 as a result of our adoption of ASU 2016-2.