Consolidated Statements of Shareholders' Equity (Unaudited) (USD $) In Thousands, unless otherwise specified	Preferred Stock [Member] Series C Preferred Stock [Member]	Preferred Stock [Member] Series D Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member] Series C Preferred Stock [Member]	Treasury Stock [Member] Common Treasury Stock [Member]	Total
Beginning and end of period at Apr. 28, 2012	$ 150		$ 503	$ 30,425	$ 109,200	$ (642)	$ (5,100)	$ (12,900)
Series C Preferred Stock
Cash flow hedges, net of tax						235			235
Net income					34,823				34,823
Common stock cash dividend					(118,139)
Preferred stock cash dividend					(3)
Other			1	330
Preferred stock issued		400		19,310
Stock-based compensation				183
End of period at Jan. 26, 2013		400	504	50,248	25,881	(407)			58,776
Beginning and end of period at Apr. 27, 2013	150	400	504	50,398	37,828	(964)	(5,100)	(12,900)	70,316
Series C Preferred Stock
Cash flow hedges, net of tax						383			383
Net income					31,703				31,703
Preferred stock cash dividend					(449)
Other				(35)
Stock-based compensation				56
End of period at Jan. 25, 2014		$ 400	$ 504	$ 50,419	$ 69,082	$ (581)			$ 101,974