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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Inventories    
Finished goods $ 63,425 $ 53,884
Work in process 169,166 107,355
Raw materials 138,086 36,963
Supplies 256 398
Inventories $ 370,933 $ 198,600