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Note 1 - Summary of Significant Accounting Policies - Summary of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Land $ 337,993 $ 306,696
Less accumulated depreciation (209,353) (202,403)
Property, plant and equipment, net 128,640 104,293
Land [Member]    
Land 6,215 5,813
Building [Member]    
Land 119,197 112,760
Machinery and Equipment [Member]    
Land $ 212,581 $ 188,123