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Employee Benefit Plans (Tables)
 12 Months Ended
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.