Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 28, 2025	Dec. 28, 2024
Property, plant and equipment	$ 168,735	$ 159,441
Less accumulated depreciation and amortization	(91,624)	(84,655)
Property, plant and equipment, net	77,111	74,786	[1]
Land and Land Improvements [Member]
Property, plant and equipment	12,373	6,941
Building and Building Improvements [Member]
Property, plant and equipment	47,335	47,733
Machinery and Equipment [Member]
Property, plant and equipment	$ 109,027	$ 104,767

[1] Derived from December 28, 2024, audited financial statements