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Note 8 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Property, plant and equipment, gross $ 113,008 $ 115,728
Accumulated depreciation (77,926) (79,195)
Property, plant and equipment, net 35,082 36,533
Land [Member]    
Property, plant and equipment, gross 117 348
Building and Building Improvements [Member]    
Property, plant and equipment, gross 12,945 15,286
Machinery and Equipment [Member]    
Property, plant and equipment, gross 98,439 98,527
Construction in Progress [Member]    
Property, plant and equipment, gross $ 1,507 $ 1,567