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Note 8 - Property, Plant and Equipment - Property, Plant and Equipment Components (Details) - USD ($)
$ in Thousands
Sep. 28, 2025
Dec. 31, 2024
Gross property, plant and equipment $ 77,857 $ 76,330
Accumulated depreciation (62,046) (63,031)
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization 15,811 13,299
Land and Land Improvements [Member]    
Gross property, plant and equipment 0 43
Building and Building Improvements [Member]    
Gross property, plant and equipment 6,359 7,781
Machinery, Equipment, Furniture and Fixtures [Member]    
Gross property, plant and equipment 70,981 67,636
Construction in Progress [Member]    
Gross property, plant and equipment $ 517 $ 870