Stockholders Equity (detail) (USD $)				6 Months Ended		0 Months Ended	6 Months Ended	3 Months Ended
	Sep. 29, 2012	Mar. 31, 2012	Oct. 01, 2011	Sep. 29, 2012 Participating Preferred Stock Converted To Class Aa [Member]	Sep. 29, 2012 Class B Common Stock Converted To Class Aa Common [Member]	Aug. 30, 2012 Treasury Stock [Member]	Sep. 29, 2012 Treasury Stock [Member]	Jun. 30, 2012 Common Stock [Member]
Stock Issued For Bonus Program Value								$ 29,000
Stock Issued For Bonus Program Shares								1,330
Treasury Stock, Value, Acquired, Cost Method						25,930,000	1,935,000
Stock Repurchased During Period, Shares						864,334	69,554
Treasury Stock, at cost	29,300,000	1,435,000	257,000				3,370,000
Shares, Issued							134,387
Conversion of Stock, Shares Converted				2,000	14,000
Conversion of Stock, Amount Converted				$ 24,000	$ 4,000