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Inventories (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025
--- | --- | ---
Inventories |  |
Finished goods | $ 329,202 | $ 328,243
Work in process and powder blends | 250,392 | 225,726
Raw materials | 102,432 | 90,257
Inventories at current cost | 682,026 | 644,226
Less: LIFO valuation | (116,832) | (105,989)
Total inventories | $ 565,194 | $ 538,237
Inventories (Textual) [Abstract] |  |
Percentage of inventories valued by using LIFO method | 33.00% | 34.00%

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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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