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Inventories (Schedule Of Inventories) (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Inventories:    
Raw materials and supplies $ 185,706 $ 216,761
Work in process 204,771 192,821
Finished goods 42,630 38,159
Total $ 433,107 $ 447,741