Commitments and Contingencies (Details) - USD ($)	9 Months Ended
	Mar. 31, 2017	Jun. 30, 2016
Loss Contingencies [Line Items]
Accrued litigation-related liabilities	$ 8,025,000	$ 4,869,000
Insurance recovery receivables related to litigation related reserves	5,087,000	$ 2,661,000
Amount of potential litigation related liabilities covered by insurance	2,500,000
Environmental Restoration Costs
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	24,200,000
Amount of potential litigation related liabilities covered by insurance	4,000,000
Minimum
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	0
Minimum | Environmental Restoration Costs
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 0
Loss Contingency, Expected Payment Period	1 year
Maximum
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 6,000,000
Possible increase in potential litigation related liabilities	14,500,000
Maximum | Environmental Restoration Costs
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 18,600,000
Loss Contingency, Expected Payment Period	5 years
TRC vs LVI Group Services Inc | Pending Litigation | Favorable Regulatory Action
Loss Contingencies [Line Items]
Gain Contingency, Unrecorded Amount	$ 3,000,000
TRC vs LVI Group Services Inc | Pending Litigation | Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 9,900,000