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Note 5 - Derivative Financial Instruments - Derivatives Instruments, Statements of Financial Performance and Financial Position (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Oct. 28, 2017
Oct. 29, 2016
Oct. 28, 2017
Oct. 29, 2016
Recognized in AOCI:        
Gain (loss) before income taxes $ 5,523 $ 253 $ 4,556 $ (197)
Less income tax provision (benefit) 2,049 94 1,690 (73)
Net 3,474 159 2,866 (124)
Reclassified from AOCI to cost of sales:        
Gain (loss) before income taxes 362 (1,083) 393 (2,193)
Less income tax provision (benefit) 135 (402) 146 (814)
Net 227 (681) 247 (1,379)
Net change to AOCI $ 3,247 $ 840 $ 2,619 $ 1,255