Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Inventories
Finished goods	$ 319,682	$ 302,524
Work in process and powder blends	191,149	173,671
Raw materials	98,528	72,551
Inventories at current cost	609,359	548,746
Less: LIFO valuation	(76,343)	(72,401)
Total inventories	$ 533,016	$ 476,345
Inventories (Textual) [Abstract]
Percentage of inventories valued by using LIFO method	38.00%	39.00%

Inventories.

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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.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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