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Note 5 - Derivative Financial Instruments (Tables)
6 Months Ended
Oct. 29, 2016
Notes Tables  
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]
   
(In thousands)
 
   
Three Months Ended
   
Six Months Ended
 
   
2016
   
2015
   
2016
   
2015
 
Recognized in AOCI:
                               
Gain (loss) before income taxes
  $ 253     $ (2,094 )   $ (197 )   $ (7,064 )
Less income tax provision (benefit)
    94       (777 )     (73 )     (2,621 )
Net
  $ 159     $ (1,317 )   $ (124 )   $ (4,443 )
Reclassified from AOCI to cost of sales:
                               
Loss before income taxes
  $ (1,083 )   $ (2,446 )   $ (2,193 )   $ (3,837 )
Less income tax benefit
    (402 )     (907 )     (814 )     (1,423 )
Net
  $ (681 )   $ (1,539 )   $ (1,379 )   $ (2,414 )
Net change to AOCI
  $ 840     $ 222     $ 1,255     $ (2,029 )