Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Inventory Disclosure [Abstract]
Raw material and supplies	$ 30,738	$ 26,255
Goods in process and finished parts	13,035	13,694
Finished goods	32,208	37,579
Total before LIFO reserve	75,981	77,528
LIFO Reserve	(24,959)	(24,541)
Total	$ 51,022	$ 52,987

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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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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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