Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)	Jan. 31, 2015	May 03, 2014
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000us-gaap_PreferredStockSharesAuthorized	1,000,000us-gaap_PreferredStockSharesAuthorized
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000us-gaap_CommonStockSharesAuthorized	75,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares)	50,404,499us-gaap_CommonStockSharesIssued	50,367,799us-gaap_CommonStockSharesIssued
Series C Preferred Stock [Member]
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, shares issued (in shares)	120,000	240,000
Preferred stock, aggregate liquidation preference	$ 6,000,000	$ 12,000,000
Common Treasury Stock [Member]
Treasury stock, shares (in shares)	4,032,784	4,032,784

Face amount or stated value per share of common stock.

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