Inventories Inventories Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Inventory Disclosure [Abstract]
Effect of LIFO Inventory Liquidation on Income	$ 579	$ 9,414	$ 2,100
Inventory Write-down		$ 6,000