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Pension Expense
6 Months Ended
Jun. 18, 2011
Pension Expense [Abstract]  
PENSION EXPENSE
8. PENSION EXPENSE
A summary of net pension and Supplemental Executive Retirement Plan costs recognized by the Company is as follows:
                                 
    12 Weeks Ended     24 Weeks Ended  
    June 18, 2011     June 19, 2010     June 18, 2011     June 19, 2010  
Service cost pertaining to benefits earned during the period
  $ 1,500     $ 1,322     $ 3,000     $ 2,644  
Interest cost on projected benefit obligations
    3,075       2,936       6,150       5,871  
Expected return on pension assets
    (3,323 )     (2,877 )     (6,646 )     (5,754 )
Net amortization loss
    2,787       2,378       5,574       4,756  
 
                       
Net pension expense
  $ 4,039     $ 3,759     $ 8,078     $ 7,517