Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Loss Contingencies [Line Items]
Accrued litigation-related liabilities	$ 4,869	$ 4,479
Insurance recovery receivables related to litigation related reserves	2,661	$ 1,918
Possible increase in potential litigation related liabilities	14,700
Amount of potential litigation related liabilities covered by insurance	5,400
Environmental Restoration Costs
Loss Contingencies [Line Items]
Amount of potential litigation related liabilities covered by insurance	4,400
Estimate of possible loss	$ 25,500
Minimum | Environmental Restoration Costs
Loss Contingencies [Line Items]
Expected payment period	1 year
Estimate of possible loss	$ 0
Maximum | Environmental Restoration Costs
Loss Contingencies [Line Items]
Expected payment period	5 years
Estimate of possible loss	$ 18,700
Pending Litigation [Member] | TRC vs LVI Group Services Inc [Member] | Favorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Gain Contingency, Unrecorded Amount	3,000
Pending Litigation [Member] | TRC vs LVI Group Services Inc [Member] | Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 9,900