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Retirement Benefits
6 Months Ended
Jun. 28, 2013
Retirement Benefits Abstract  
Retirement Benefits Text Block

4.       The components of net periodic benefit cost for retirement benefit plans were as follows (in thousands):

  Thirteen Weeks Ended Twenty-six Weeks Ended 
  Jun 28, Jun 29, Jun 28, Jun 29, 
  2013 2012 2013 2012 
 Pension Benefits            
 Service cost$ 1,789 $ 1,724 $ 3,590 $ 3,014 
 Interest cost  3,429   3,567   6,998   6,798 
 Expected return on assets  (4,535)   (3,859)   (9,249)   (7,684) 
 Amortization and other  2,789   3,049   5,292   5,495 
 Net periodic benefit cost$ 3,472 $ 4,481 $ 6,631 $ 7,623 
              
 Postretirement Medical            
 Service cost$ 155 $ 125 $ 310 $ 275 
 Interest cost  247   237   493   500 
 Amortization  (50)   (38)   (102)   (75) 
 Net periodic benefit cost$ 352 $ 324 $ 701 $ 700