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Stock Ownership (Details)
 12 Months Ended
Mar. 31, 2012
Treasury Stock [Member]
Mar. 26, 2011
Treasury Stock [Member]
Mar. 27, 2010
Treasury Stock [Member]
Mar. 31, 2012
Common Stock [Member]
Mar. 26, 2011
Common Stock [Member]
Mar. 27, 2010
Common Stock [Member]
Mar. 31, 2012
Class C Convertible Preferred Stock [Member]
Mar. 26, 2011
Class C Convertible Preferred Stock [Member]
Mar. 27, 2010
Class C Convertible Preferred Stock [Member]
Mar. 28, 2009
Class C Convertible Preferred Stock [Member]
Summary of the changes in the number of shares of common stock, Class C preferred stock and treasury stock                    
Shares Issued, Beginning balance 5,577,984 3,682,429 3,580,829 36,038,664 23,646,460 22,999,313 32,500 32,500 32,500 32,500
Shares issued in connection with three-for-two stock split   1,859,328     11,983,603          
Stock options exercised 390,007 36,227 101,600 816,594 408,601 647,147        
Shares Issued, Ending balance 5,967,991 5,577,984 3,682,429 36,855,258 36,038,664 23,646,460 32,500 32,500 32,500 32,500