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Note 10 - Inventories - Summary of Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Finished goods $ 22,757 $ 26,810
Raw materials, equipment spares and consumables 108,547 102,395
Work-in-progress 24,037 24,513
Total $ 155,341 $ 153,718