Discontinued Operations (Schedule Of Discontinued Operations - Key Components Of Income From Discontinued Operations) (Details) (USD $)	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Discontinued Operations [Abstract]
Net sales	$ 9,900,000	$ 151,100,000
Operating expenses	(11,200,000)	(130,500,000)
Allocated interest expense		(900,000)
(Loss) earnings before income taxes	(1,300,000)	19,700,000
Income tax benefit (expense)	500,000	(7,100,000)
(Loss) earnings from discontinued operations	(800,000)	12,600,000
Gain on sale, net of 55 million of related income taxes	93,700,000
Earnings from discontinued operations, net of income taxes	92,858,000	12,583,000
Income taxes related to the gain on the sale	$ 55,000,000