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Inventories (Schedule Of Inventories) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Inventories:    
Raw materials and supplies $ 143,967 $ 132,113
Work in process 129,859 127,127
Finished goods 44,232 30,192
Total $ 318,058 $ 289,432