Litigation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jul. 31, 2017	Aug. 31, 2016
Litigation [Abstract]
Litigation Settlement Reimbursements		$ (1,175)		$ (1,175)
Loss Contingency, Estimate of Possible Loss					$ 5,500	$ 3,600
Environmental Remediation Expense	$ 3,600		$ 3,600