Stockholders Equity (detail) (USD $)				6 Months Ended	3 Months Ended	6 Months Ended		6 Months Ended
	Sep. 28, 2013	Mar. 31, 2013	Sep. 29, 2012	Sep. 28, 2013 Participating Preferred Stock Converted To Class Aa [Member]	Jun. 29, 2013 Class B Common Stock Converted To Class Aa Common [Member]	Sep. 28, 2013 Class B Common Stock Converted To Class Aa Common [Member]	Sep. 28, 2013 Treasury Stock [Member]	Sep. 28, 2013 Common Stock [Member]
Stock Issued For Bonus Program Value					$ 4,000
Stock Issued For Bonus Program Shares					108
Treasury Stock, Value, Acquired, Cost Method								560,000
Stock Repurchased During Period, Shares								16,400
Treasury Stock, at cost	31,764,000	31,204,000	29,300,000				31,764,000
Shares, Issued							1,078,014
Conversion of Stock, Shares Converted				1,061		41,579
Conversion of Stock, Amount Converted				$ 12,000		$ 10,000