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Inventories (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Jun. 30, 2021
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Inventories |  |
Finished goods | $ 331,467 | $ 302,524
Work in process and powder blends | 207,276 | 173,671
Raw materials | 100,721 | 72,551
Inventories at current cost | 639,464 | 548,746
Less: LIFO valuation | (77,422) | (72,401)
Total inventories | $ 562,042 | $ 476,345
Inventories (Textual) [Abstract] |  |
Percentage of inventories valued by using LIFO method | 38.00% | 39.00%

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