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Note 2 - Property, Plant and Equipment (Tables)
9 Months Ended
Jan. 30, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
(In thousands) 
 
   
January 30
2016
   
May 2,
2015 
 
Land
  $ 9,500     $ 9,500  
Buildings and improvements
    50,816       50,405  
Machinery and equipment
    163,833       156,702  
Total
    224,149       216,607  
Less accumulated depreciation
    (163,919 )     (156,425 )
Property, plant and equipment – net
  $ 60,230     $ 60,182