Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Revenue	$ 140,815	$ 184,310
Percentage of revenue	100.00%	100.00%
CHINA
Revenue	$ 56,872	$ 55,722
Percentage of revenue	40.00%	30.00%
JAPAN
Revenue	$ 24,988	$ 30,017
Percentage of revenue	18.00%	16.00%
Other Asia [Member]
Revenue	$ 10,568	$ 20,016
Percentage of revenue	8.00%	11.00%
Asia [Member]
Revenue	$ 92,428	$ 105,755
Percentage of revenue	66.00%	57.00%
Americas [Member]
Revenue	$ 31,980	$ 41,903
Percentage of revenue	22.00%	23.00%
Europe [Member]
Revenue	$ 16,407	$ 36,652
Percentage of revenue	12.00%	20.00%
Product [Member] | Sales Channel, Through Intermediary [Member]
Revenue	$ 123,205	$ 161,346
Percentage of revenue	87.00%	88.00%
Product [Member] | Sales Channel, Directly to Consumer [Member]
Revenue	$ 17,610	$ 22,964
Percentage of revenue	13.00%	12.00%