Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Loss Contingencies [Line Items]
Accrued litigation-related liabilities	$ 5,410	$ 3,612
Insurance recovery receivables related to litigation related reserves	4,098	2,425
Possible increase in potential litigation related liabilities	11,500
Amount of potential litigation related liabilities covered by insurance	1,500
Environmental Restoration Costs
Loss Contingencies [Line Items]
Loss contingency beyond the limits or term of insurance, minimum	0
Loss contingency beyond the limits or term of insurance, maximum	21,750
Amount of potential litigation related liabilities covered by insurance	3,600
Estimate of possible loss	26,950
Minimum | Environmental Restoration Costs
Loss Contingencies [Line Items]
Expected payment period	1 year
Maximum | Environmental Restoration Costs
Loss Contingencies [Line Items]
Expected payment period	5 years
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	$ 9,600