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Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Inventories
Finished goods	$ 316,120	$ 318,071
Work in process and powder blends	180,032	190,041
Raw materials	64,915	75,589
Inventories at current cost	561,067	583,701
Less: LIFO valuation	(63,843)	(61,254)
Total inventories	$ 497,224	$ 522,447
Inventories (Textual) [Abstract]
Percentage of inventories valued by using LIFO method	40.00%	43.00%

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- Definition

Inventories.

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a)(1))
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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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