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Note 8 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Property, plant and equipment, gross $ 350,984 $ 356,168
Less accumulated depreciation and amortization (183,479) (177,519)
Property, plant and equipment, net before construction in progress and land 167,505 178,649
Property, plant and equipment, net 197,879 210,184
Land Improvements [Member]    
Property, plant and equipment, gross 806 806
Building and Building Improvements [Member]    
Property, plant and equipment, gross 85,342 86,372
Machinery and Equipment [Member]    
Property, plant and equipment, gross 247,242 251,216
Furniture and Fixtures [Member]    
Property, plant and equipment, gross 5,346 5,382
Computer Equipment and Software [Member]    
Property, plant and equipment, gross 11,587 11,713
Vehicles [Member]    
Property, plant and equipment, gross 661 679
Construction in Progress [Member]    
Property, plant and equipment, net 29,273 30,434
Land [Member]    
Property, plant and equipment, net $ 1,101 $ 1,101