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Note 3 - Property, Plant and Equipment (Tables)
9 Months Ended
Jan. 26, 2013
Property, Plant and Equipment [Table Text Block]
   
(In thousands)
 
   
January 26,
2013
   
April 28,
2012
 
Land
  $ 9,779     $ 9,779  
Buildings and improvements
    48,785       48,363  
Machinery and equipment
    140,727       136,019  
Total
    199,291       194,161  
Less accumulated depreciation
    (143,521 )     (137,432 )
Property – net
  $ 55,770     $ 56,729