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 Jan. 28, 2017	$ 216,446	$ 150	$ 506	$ 35,055		$ (32)	$ (5,100)	$ (12,900)
Balance at Apr. 30, 2016				34,570	$ 190,733	(1,807)
Stock options exercised				186
Stock-based compensation				146
Stock-based tax benefits				153
Net income	77,884				77,884
Common stock cash dividend					(69,850)
End of period					198,767
Cash flow hedges	1,775					1,775
Balance at Jan. 27, 2018	293,505	$ 150	$ 506	36,156		3,311	$ (5,100)	$ (12,900)
Balance at Apr. 30, 2017				35,638	227,928	(604)
Stock options exercised				399
Stock-based compensation				119
Stock-based tax benefits
Net income	113,332				113,332
Common stock cash dividend					(69,878)
End of period					$ 271,382
Cash flow hedges	$ 3,915					$ 3,915