Summary of Significant Accounting Policies and New Accounting Pronouncements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Goodwill	$ 28,797	$ 31,679	$ 28,797	$ 24,888
Minimum Percentage Required To Recognize Tax Benefit		50.00%
Valuation Allowance, Deferred Tax Asset, Change in Amount	25,646		25,646
Deposits Related To Restricted Investments	28,072	22,366	28,072
Assets Held-for-sale, at Carrying Value		4,344
Accrual for Environmental Loss Contingencies, Discount	374	365	374
Accrual for Environmental Loss Contingencies, Discount Rate	2.30%	3.20%	2.30%
Accrual for Environmental Loss Contingencies, Gross	7,632	6,761	7,632
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent		50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent		4.00%
Discretionary Match of Employee Contribution Based on Company's Preformance		2.00%
Total Contributions Paid to Employee Benefit Plan		$ 4,005	$ 3,444	$ 4,482
Minimum
Percentage of Proceeds Resulting From Long-Term Restricted Investments		5.00%
One-Year Constant Maturity U.S. Treasury Bill Rate	0.09%	0.10%	0.09%
Minimum | Software and Software Development Costs [Member]
Capitalized Software, Useful Life		3 years	3 years	3 years
Maximum
Percentage of Proceeds Resulting From Long-Term Restricted Investments		10.00%
One-Year Constant Maturity U.S. Treasury Bill Rate	0.21%	0.18%	0.21%
Maximum | Software and Software Development Costs [Member]
Capitalized Software, Useful Life		5 years	5 years	5 years