Segment Information (Details Textuals) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Inventory, LIFO Reserve, Period Charge	$ 1,929	$ 2,676	$ 2,287	$ 4,347
Net sales	833,375	840,038	1,689,779	1,704,553
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	$ 7,436	$ 6,769	$ 14,749	$ 13,685

The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration