Note 7 - Derivative Financial Instruments - Derivatives Instruments, Statements of Financial Performance and Financial Position (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	May 01, 2021
Statement [Line Items]
(Loss) gain before income taxes	$ (21,100)	$ 15,105	$ 12,973
Less income tax (benefit) provision	(5,047)	3,613	3,103
Net	(16,053)	11,492	9,870
(Loss) gain before income taxes	(7,785)	10,001	2,550
Less income tax (benefit) provision	(1,862)	2,391	610
Net	(5,923)	7,610	1,940
Net change to AOCI	$ (10,130)	$ 3,882	$ 7,930