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Employee Benefit Plans (Tables) | 12 Months Ended
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Jun. 30, 2012
Employee Benefit Plans [Abstract] |
Multiemployer Pension Plans |
Pension Fund |  | EIN/Pension Plan Number |  |  | Pension Protection Act Zone Status |  |  | FIP/RP Status Pending or Implemented |  |  | Company Contributions Fiscal Year |  |  | Surcharge Imposed |  |  | Expiration Date of Collective- Bargaining Agreement |
|  | 2011 |  |  | 2010 |  |  |  | 2012 |  |  | 2011 |  |  | 2010 |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  | (In thousands) |  |  |  |  |  |  |
Boilermaker-Blacksmith National Pension Trust |  |  | 48-6168020/001 |  |  |  | Yellow |  |  |  | Yellow |  |  |  | Yes |  |  |  | 2,845 |  |  |  | 3,783 |  |  |  | 4,544 |  |  |  | No |  |  |  | Described below (1) |
Joint Pension Fund Local Union 164 IBEW (2) |  |  | 22-6031199/001 |  |  |  | Yellow |  |  |  | Yellow |  |  |  | Yes |  |  |  | 1,538 |  |  |  | 3,054 |  |  |  | 2,512 |  |  |  | No |  |  |  | 5/31/2013 |
Local 351 IBEW Pension Plan (2) |  |  | 22-3417366/001 |  |  |  | Yellow |  |  |  | Yellow |  |  |  | Yes |  |  |  | 1,140 |  |  |  | 2,932 |  |  |  | 1,777 |  |  |  | No |  |  |  | 9/30/2012 |
|  |  | Contributions to other multiemployer plans |  |  |  | 11,014 |  |  |  | 11,034 |  |  |  | 7,746 |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  | Total contributions made |  |  |  | 16,537 |  |  |  | 20,803 |  |  |  | 16,579 |  |  |  |  |  |  |  |  |
(1) | Our collective bargaining agreements with the Boilermaker-Blacksmith National Pension Trust are under a National Maintenance Agreement platform which is evergreen in terms of expiration. However, the agreements allow for termination of the collective bargaining agreement by either party with a predetermined written notice.
(2) | Our contributions for the Joint Pension Fund Local Union 164 IBEW and the Local 351 IBWEW Pension Plan exceeded 5% of total contributions for the 2010 plan year. This information was not available for 2011.

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- Definition Tabular disclosure of the quantitative and qualitative information related to multiemployer plans in which the employer participates. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -URI http://asc.fasb.org/subtopic&trid=2235144 + Details
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