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Note 5 - Derivatives Instruments, Statements of Financial Performance and Financial Position (Details) - USD ($)
$ in Thousands
3 Months Ended
Jul. 30, 2016
Aug. 01, 2015
Recognized in AOCI:    
Loss before income taxes $ (450) $ (4,970)
Less income tax benefit (167) (1,844)
Net (283) (3,126)
Reclassified from AOCI to cost of sales:    
Loss before income taxes (1,110) (1,391)
Less income tax benefit (412) (516)
Net (698) (875)
Net change to AOCI $ 415 $ (2,251)