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Retirement Plans (Tables)
 3 Months Ended
Jun. 01, 2013
Retirement Plans  
Summary of net periodic pension expense for the defined benefit plans

 

 
   Defined Benefit
Pension Plan		   Nonqualified Executive
Retirement Plans		  
 
   Thirteen Week Period Ended  
 
   June 1, 2013   June 2, 2012   June 1, 2013   June 2, 2012  

Service cost

   $ 829   $ 868   $ —   $ —  

Interest cost

     1,551     1,566     136     154  

Expected return on plan assets

     (1,779 )   (1,749 )   —     —  

Amortization of unrecognized prior service cost

     60     60     —     —  

Amortization of unrecognized net loss

     1,203     960     —     —  
                   

Net pension expense

   $ 1,864   $ 1,705   $ 136   $ 154