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Cash Flow Information (Tables)
9 Months Ended
Jan. 31, 2016
Supplemental Cash Flow Elements [Abstract]  
Schedule of Interest and Income Taxes Paid
Interest and income taxes paid are as follows:
       
    Nine months ended  
(dollars in thousands)
 
January 31, 2016
   
February 1, 2015
 
Interest
  $ 95     $ 180  
Income taxes
    4,921       3,005