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Note 8 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Property, plant and equipment, gross $ 437,598 $ 414,237
Less accumulated depreciation (209,085) (204,500)
Property, plant and equipment, net before construction in progress and land 228,513 209,737
Property, plant and equipment, net 241,453 219,235
Land Improvements [Member]    
Property, plant and equipment, gross 806 806
Building and Building Improvements [Member]    
Property, plant and equipment, gross 120,088 118,648
Machinery and Equipment [Member]    
Property, plant and equipment, gross 296,966 275,617
Furniture and Fixtures [Member]    
Property, plant and equipment, gross 5,293 5,150
Computer Equipment and Software [Member]    
Property, plant and equipment, gross 13,802 13,369
Vehicles [Member]    
Property, plant and equipment, gross 643 647
Construction in Progress [Member]    
Property, plant and equipment, net 11,839 8,397
Land [Member]    
Property, plant and equipment, net $ 1,101 $ 1,101