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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% |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 7, 10, 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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