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Note 2 - Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Raw materials $ 61,552 $ 68,110
Work-in-process 8,293 8,912
Finished goods 12,660 11,911
Supplies 2,472 2,296
Total inventories $ 84,977 $ 91,229