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Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Jun. 30, 2022
Inventories    
Finished goods $ 331,354 $ 316,936
Work in process and powder blends 243,394 231,214
Raw materials 101,293 107,024
Inventories at current cost 676,041 655,174
Less: LIFO valuation (84,571) (84,338)
Total inventories $ 591,470 $ 570,836
Inventories (Textual) [Abstract]    
Percentage of inventories valued by using LIFO method 40.00% 39.00%