Note 7 - Derivative Financial Instruments - Derivatives Instruments, Statements of Financial Performance and Financial Position (Details) - USD ($) $ in Thousands	12 Months Ended
May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
(Loss) gain before income taxes	$ (9,613)	$ (6,138)	$ 9,498
Less income tax (benefit) provision	(2,299)	(1,468)	3,085
Net	(7,314)	(4,670)	6,413
Gain (loss) before income taxes	(4,786)	2,100	2,569
Less income tax provision (benefit)	(1,145)	452	1,383
Net	(3,641)	1,648	1,186
Net change to AOCI	$ (3,673)	$ (6,318)	$ 5,227

Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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