Consolidated Statements of Shareholders' Equity (Unaudited) (USD $) In Thousands, except Share data	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)								46,000
Cash flow hedges, net of tax					(3,609)			(3,609)
Net income				24,558				24,558
Stock options exercised			88					88
Stock-based compensation			130
Stock-based tax benefits			126
End of period at Oct. 29, 2011			30,069	89,765	(858)			101,629
End of period (in Shares) at Oct. 29, 2011								50,308,000
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)								16,720
Cash flow hedges, net of tax					(380)			(380)
Net income				26,409				26,409
Stock options exercised			129					129
Stock-based compensation			156
Stock-based tax benefits			22
End of period at Oct. 27, 2012			$ 30,732	$ 135,609	$ (1,022)			$ 147,972
End of period (in Shares) at Oct. 27, 2012								50,338,279