Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Jul. 27, 2013	Apr. 27, 2013
Preferred stock, shares authorized (in Shares)	1,000,000	1,000,000
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in Shares)	75,000,000	75,000,000
Common stock, shares issued (in Shares)	50,363,199	50,361,799
Series C Preferred Stock [Member]
Preferred stock par value (in Dollars per share)	$ 1	$ 1
Preferred stock, shares issued (in Shares)	150,000	150,000
Treasury Stock, shares (in Shares)	150,000	150,000
Series D Preferred Stock [Member]
Preferred stock par value (in Dollars per share)	$ 1	$ 1
Preferred stock, shares issued (in Shares)	400,000	400,000
Preferred stock, aggregate liquidation preference (in Dollars)	$ 20,000	$ 20,000
Common Treasury Stock [Member]
Treasury Stock, shares (in Shares)	4,032,784	4,032,784