Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Inventory Disclosure [Abstract]    
Supplies $ 6,678 $ 6,757
Raw materials 1,523 872
Work in process 3,414 3,955
Finished goods 1,206 1,069
Total inventories $ 12,821 $ 12,653