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Note 2 - Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Raw materials $ 59,408 $ 47,978
Work-in-process 9,180 5,114
Finished goods 12,205 15,773
Supplies 2,300 2,164
Total inventories $ 83,093 $ 71,029