Consolidated Statements of Shareholders' Equity (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]	Preferred Treasury Stock [Member]	Common Treasury Stock [Member]	Total
Preferred Stock at Apr. 28, 2012	$ 150			$ 30,425	$ 109,200	$ (642)
Additional Paid-In Capital
Stock options exercised				24
Stock-based compensation				86					86
Stock-based tax benefits				4
Retained Earnings
Net income					14,392				14,392
Accumulated Other Comprehensive Loss
Cash flow hedges, net of tax						(878)			(878)
End of period at Jul. 28, 2012			503	30,539	123,592	(1,520)	(5,100)	(12,900)	135,264
Preferred Stock at Apr. 27, 2013	150			50,398	37,828	(964)			70,316
Additional Paid-In Capital
Stock options exercised				4
Stock-based compensation				37					37
Stock-based tax benefits				3
Retained Earnings
Net income					12,070				12,070
Preferred stock cash dividend					(150)
Accumulated Other Comprehensive Loss
Cash flow hedges, net of tax						(280)			(280)
End of period at Jul. 27, 2013		$ 400	$ 504	$ 50,442	$ 49,748	$ (1,244)	$ (5,100)	$ (12,900)	$ 82,000