Consolidated Statements of Shareholders' Equity (Unaudited) - 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 at Oct. 29, 2016	$ 261,280	$ 150	$ 506	$ 34,844	$ 244,332	$ (552)	$ (5,100)	$ (12,900)
Balance at Apr. 30, 2016				34,570	190,733	(1,807)
Stock options exercised				100
Stock-based compensation				98
Stock-based tax benefits				76
Net income	53,599				53,599
Common stock cash dividend
Cash flow hedges	1,255					1,255
Balance at Oct. 28, 2017	250,973	$ 150	$ 506	36,000	230,302	2,015	$ (5,100)	$ (12,900)
Balance at Apr. 30, 2017				35,638	227,928	(604)
Stock options exercised				282
Stock-based compensation				80
Stock-based tax benefits
Net income	72,252				72,252
Common stock cash dividend					$ (69,878)
Cash flow hedges	$ 2,619					$ 2,619