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Inventories (Tables)
 12 Months Ended
Apr. 26, 2014
Inventories [Abstract]  
Components of Inventory
Inventories

(Amounts in thousands)
 
4/26/2014
  
4/27/2013
 
Raw materials
 
$
71,247
  
$
70,731
 
Work in process
  
13,722
   
12,182
 
Finished goods
  
91,842
   
93,273
 
FIFO inventories
  
176,811
   
176,186
 
Excess of FIFO over LIFO
  
(29,802
)
  
(29,843
)
Total inventories
 
$
147,009
  
$
146,343