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Note 4 - Inventories (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Inventory, LIFO Reserve $ 100,200 $ 95,100  
Inventory Valuation Reserves 6,800 7,900  
Inventory, LIFO Reserve, Effect on Income, Net $ 5,142 $ 6,891 $ 18,041