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Note 8 - Property, Plant and Equipment - Property, Plant and Equipment Components (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Gross property, plant and equipment $ 76,330 $ 84,001
Finance lease, right-of-use asset, gross 6,910 7,536
Finance lease, right-of-use, accumulated depreciation (3,610) (3,799)
Finance lease, right-of-use, net 3,300 3,737
Accumulated depreciation (63,031) (66,868)
Property plant and equipment, net 13,299 17,133
Land and Land Improvements [Member]    
Gross property, plant and equipment 43 43
Building and Building Improvements [Member]    
Gross property, plant and equipment 7,781 8,507
Finance lease, right-of-use asset, gross 2,908 3,490
Machinery, Equipment, Furniture and Fixtures [Member]    
Gross property, plant and equipment 67,636 74,588
Finance lease, right-of-use asset, gross 4,002 4,046
Construction in Progress [Member]    
Gross property, plant and equipment $ 870 $ 863