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Pension Plans (Tables)
3 Months Ended
Jul. 28, 2012
Pension Plans [Abstract]  
Net Periodic Pension Costs
Net periodic pension costs were as follows:

   
Quarter Ended
 
(Unaudited, amounts in thousands)
 
7/28/12
  
7/30/11
 
Service cost
 $308  $278 
Interest cost
  1,331   1,391 
Expected return on plan assets
  (1,714 )  (1,705 )
Net amortization
  756   409 
Net periodic pension cost
 $681  $373