Note 5 - Property and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Property and Equipment	$ 175,402	$ 163,963
Accumulated depreciation and amortization	(125,856)	(116,349)
Total property and equipment, net	49,546	47,614
Property, Plant and Equipment, Net	49,546	47,614
UNITED STATES
Total property and equipment, net	29,467	29,118
Property, Plant and Equipment, Net	29,467	29,118
TAIWAN
Total property and equipment, net	10,222	10,732
Property, Plant and Equipment, Net	10,222	10,732
PHILIPPINES
Total property and equipment, net	4,602	3,596
Property, Plant and Equipment, Net	4,602	3,596
CHINA
Total property and equipment, net	2,778	2,229
Property, Plant and Equipment, Net	2,778	2,229
Other [Member]
Total property and equipment, net	2,477	1,939
Property, Plant and Equipment, Net	2,477	1,939
Foreign Countries [Member]
Total property and equipment, net	20,079	18,496
Property, Plant and Equipment, Net	20,079	18,496
Production Equipment and Software [Member]
Property and Equipment	159,950	149,787
Leasehold Improvements [Member]
Property and Equipment	13,519	12,416
Office Equipment [Member]
Property and Equipment	$ 1,933	$ 1,760