Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member] Series C Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Preferred [Member] Series C Preferred Stock [Member]	Treasury Stock, Common [Member]
Balance (in shares) at Apr. 28, 2018			101,302,000					8,065,000
Balance at Apr. 28, 2018			$ 1,014	$ 35,850	$ 307,824	$ 4,601		$ (12,900)
Stock options exercised (in shares)			54,000
Balance (in shares) at Apr. 27, 2019		150,000	101,356,000				150,000	8,065,000
Balance at Apr. 27, 2019	$ 331,609	$ 150	$ 1,014	36,557	313,430	(1,543)	$ (5,100)	$ (12,900)
Stock options exercised				456
Stock-based compensation				251
End of year				36,557
Net income	140,853				140,853
Common stock cash dividend					(135,247)
Cash flow hedges	(6,318)					(6,318)
Other	174					174
Repurchase of common stock (in shares)								0
Repurchase of common stock								$ 0
Stock options exercised (in shares)			250,000
Balance (in shares) at May. 02, 2020		150,000	101,606,000				150,000	8,374,000
Balance at May. 02, 2020	452,337	$ 150	$ 1,016	37,422	443,402	(5,420)	$ (5,100)	$ (19,133)
Stock options exercised				740
Stock-based compensation				125
End of year				37,422
Net income	129,972				129,972
Common stock cash dividend					0
Cash flow hedges	(3,673)					(3,673)
Other	$ (204)					(204)
Repurchase of common stock (in shares)	154,512							309,000
Repurchase of common stock	$ (6,200)							$ (6,233)
Stock options exercised (in shares)	69,490		70,000
Balance (in shares) at May. 01, 2021		150,000	101,676,000				150,000	8,374,000
Balance at May. 01, 2021	$ 355,997	$ 150	$ 1,016		337,672	3,017	$ (5,100)	$ (19,133)
Stock options exercised				491
Stock-based compensation				462
End of year				$ 38,375
Net income	174,146				174,146
Common stock cash dividend					$ (279,876)
Cash flow hedges	7,930					7,930
Other	$ 507					$ 507
Repurchase of common stock (in shares)								0
Repurchase of common stock								$ 0