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. 29, 2022	Oct. 29, 2022	Oct. 30, 2021	Oct. 30, 2021	Oct. 29, 2022	Oct. 30, 2021	Oct. 29, 2021
(Loss) gain before income taxes		$ (10,327)	$ 221			$ 974	$ (25,337)
Less income tax (benefit) provision		(2,470)	53			233	(6,061)
Net		(7,857)	168			741	(19,276)
(Loss) gain before income taxes		(3,106)	1,483			4,540	(3,714)
Less income tax provision (benefit)		(743)	355			1,086	(888)
Net		(2,363)	1,128			3,454	(2,826)
Net change to AOCI	$ (5,494)	$ (5,494)	$ (960)	$ (960)	$ (16,450)	$ (2,713)	$ (16,450)