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Retirement Plans (Tables)
 3 Months Ended
May 31, 2014
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  
 
   May 31,
2014		   June 1,
2013		   May 31,
2014		   June 1,
2013		  

Service cost

   $ 793   $ 829   $ —   $ —  

Interest cost

     1,631     1,551     135     136  

Expected return on plan assets

     (1,929 )   (1,779 )   —     —  

Amortization of unrecognized prior service cost

     60     60     —     —  

Amortization of unrecognized net loss

     599     1,203     —     —  
                   
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Net pension expense

   $ 1,154   $ 1,864   $ 135   $ 136  
                   
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