Note 7 - Derivative Financial Instruments - Derivatives Instruments, Statements of Financial Performance and Financial Position (Details) - USD ($) $ in Thousands	12 Months Ended
May 01, 2021	May 02, 2020	Apr. 27, 2019
Gain (loss) before income taxes	$ 12,973	$ (9,613)	$ (6,138)
Less income tax provision (benefit)	3,103	(2,299)	(1,468)
Net	9,870	(7,314)	(4,670)
Gain (loss) before income taxes	2,550	(4,786)	2,100
Less income tax provision (benefit)	610	(1,145)	452
Net	1,940	(3,641)	1,648
Net change to AOCI	$ 7,930	$ (3,673)	$ (6,318)

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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