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Consolidated Statements of Shareholders' Equity (Parentheticals) |  |  |  |  |  |  | 12 Months Ended |  |  |  | 12 Months Ended
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Apr. 27, 2013 Series C Preferred Stock [Member] Preferred Stock [Member] | Apr. 28, 2012 Series C Preferred Stock [Member] Preferred Stock [Member] | Apr. 30, 2011 Series C Preferred Stock [Member] Preferred Stock [Member] | Apr. 27, 2013 Series C Preferred Stock [Member] Treasury Stock [Member] | Apr. 28, 2012 Series C Preferred Stock [Member] Treasury Stock [Member] | Apr. 30, 2011 Series C Preferred Stock [Member] Treasury Stock [Member] | May 03, 2014 Series D Preferred Stock [Member] Preferred Stock [Member] | Apr. 27, 2013 Series D Preferred Stock [Member] Preferred Stock [Member] | Apr. 27, 2013 Common Treasury Stock [Member] Treasury Stock [Member] | Apr. 28, 2012 Common Treasury Stock [Member] Treasury Stock [Member] | Apr. 30, 2011 Common Treasury Stock [Member] Treasury Stock [Member] | May 03, 2014 Common Stock [Member] | Apr. 27, 2013 Common Stock [Member] | Apr. 28, 2012 Common Stock [Member]
Beginning of year, shares | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 400,000 |  | 4,033,000 | 4,033,000 | 4,033,000 | 50,362,000 | 50,322,000 | 50,262,000
Series D preferred issued (redeemed), shares |  |  |  |  |  |  | (160,000) | 400,000 |  |  |  |  |  |
End of year, shares | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 240,000 | 400,000 | 4,033,000 | 4,033,000 | 4,033,000 | 50,368,000 | 50,362,000 | 50,322,000
Stock options exercised, shares |  |  |  |  |  |  |  |  |  |  |  | 6,000 | 40,000 | 60,000

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- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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