Note 7 - Intangible Assets - Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022
Intangible Assets, gross	$ 165,392	$ 165,272
Accumulated Amortization	(140,322)	(135,490)
Intangible Assets, net	$ 25,070	$ 29,782
Existing Technology [Member]
Weighted Average Amortization (Year)	5 years 1 month 6 days	5 years 1 month 6 days
Intangible Assets, gross	$ 124,487	$ 124,487
Accumulated Amortization	(113,157)	(111,090)
Intangible Assets, net	$ 11,330	$ 13,397
Customer Relationships [Member]
Weighted Average Amortization (Year)	6 years 1 month 6 days	6 years 1 month 6 days
Intangible Assets, gross	$ 32,734	$ 32,734
Accumulated Amortization	(24,509)	(22,947)
Intangible Assets, net	$ 8,225	$ 9,787
Trademarks and Trade Names [Member]
Weighted Average Amortization (Year)	10 years	10 years
Intangible Assets, gross	$ 1,500	$ 1,500
Accumulated Amortization	(169)	(19)
Intangible Assets, net	$ 1,331	$ 1,481
Licensed Technology [Member]
Weighted Average Amortization (Year)	6 years 3 months 18 days	6 years 3 months 18 days
Intangible Assets, gross	$ 6,671	$ 6,551
Accumulated Amortization	(2,487)	(1,434)
Intangible Assets, net	$ 4,184	$ 5,117