Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Property, plant and equipment	$ 163,578	$ 155,809
Less accumulated depreciation and amortization	(87,164)	(86,724)
Property, plant and equipment, net	76,414	69,085	[1]
Land and Land Improvements [Member]
Property, plant and equipment	7,114	7,301
Building and Building Improvements [Member]
Property, plant and equipment	46,193	39,677
Machinery and Equipment [Member]
Property, plant and equipment	$ 110,271	$ 108,831

[1] Derived from December 30, 2023 audited financial statements