Litigation (Details) - USD ($)		3 Months Ended			12 Months Ended
	Aug. 14, 2019	Jun. 30, 2019	Mar. 31, 2018	Dec. 31, 2013	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jul. 31, 2017
Litigation settlement (costs) reimbursements				$ 6,250,000	$ 475,000	$ 0	$ (1,175,000)
Legal and other related expenses							300,000
Insurance reimbursements							$ 1,200,000
Litigation Settlement Reimbursements		$ 475,000
Environmental remediation			$ 3,600,000			3,600,000
Environmental remediation liability		$ 3,600,000			$ 3,600,000	$ 3,600,000
Environmental Issue [Member]
Loss Contingency, Estimate of Possible Loss								$ 5,500,000
Subsequent Event [Member]
Litigation settlement (costs) reimbursements	$ 500,000