Commitments and Contingencies - Contractual Obligations (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Capital Lease Obligations
2013	$ 4,523
2014	3,790
2015	3,742
2016	3,425
2017	1,501
Thereafter	958
Total minimum lease payments	17,939
Less: imputed interest (3.5% to 10.7%)	(2,072)
Present value of future minimum lease payments	15,867
Less: current portion	3,737	1,570
Long-term capital lease obligation	12,130	7,066
Operating Lease Obligations [Abstract]
2013	3,979
2014	3,382
2015	2,757
2016	1,950
2017	1,341
Thereafter	2,047
Future Minimum Payments Due	15,456
Pension Plan
Defined Benefit Plan Obligations
2013	6,364
2014	6,508
2015	6,692
2016	6,898
2017	7,165
Thereafter	40,943
Future payments due	74,570
Postretirement Benefits Other Than Pension
Defined Benefit Plan Obligations
2013	1,363
2014	1,450
2015	1,846
2016	2,106
2017	2,362
Thereafter	15,559
Future payments due	$ 24,686
Minimum
Capital Lease Obligations
Imputed interest rate on capital leases	0.82%
Maximum
Capital Lease Obligations
Imputed interest rate on capital leases	10.70%

Capital Leases, Future Minimum Payments, Imputed Interest

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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