Consolidated Statements of Shareholders' Equity (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	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
Beginning of period at Apr. 30, 2011	$ 150	$ 503	$ 29,725	$ 65,207	$ 2,751	$ (5,100)	$ (12,900)
Beginning of period (in Shares) at Apr. 30, 2011								50,262,000
Stock options exercised (in Shares)								41,000
Preferred Stock
Cash flow hedges, net of tax					(1,105)			(1,105)
Net income				13,435				13,435
Stock options exercised			58					58
Stock-based compensation			106
Stock-based tax benefits			113
End of period at Jul. 30, 2011			30,002	78,642	1,646			92,943
End of period (in Shares) at Jul. 30, 2011								50,303,000
Beginning of period at Apr. 28, 2012	150	503	30,425	109,200	(642)	(5,100)	(12,900)	121,636
Beginning of period (in Shares) at Apr. 28, 2012								50,321,559
Stock options exercised (in Shares)								3,200
Preferred Stock
Cash flow hedges, net of tax					(878)			(878)
Net income				14,392				14,392
Stock options exercised			24					24
Stock-based compensation			86
Stock-based tax benefits			4
End of period at Jul. 28, 2012			$ 30,539	$ 123,592	$ (1,520)			$ 135,264
End of period (in Shares) at Jul. 28, 2012								50,324,759