Discontinued Operations (Consolidated Statement Of Earnings Discontinued Operations) (Details) (USD $)	0 Months Ended	3 Months Ended								12 Months Ended
	Aug. 03, 2011	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2010	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Discontinued Operations [Abstract]
Net sales										$ 13,945,000	$ 62,489,000	$ 65,103,000
Loss from discontinued operations										(13,971,000)	(4,673,000)	(1,796,000)
Income tax benefit										1,299,000	1,837,000	409,000
Gain on sale of business	1,248,000									68,745,000	0	0
Income tax expense on sale	13,308,000									(11,773,000)	0	0
Income (loss) from discontinued operations		$ 2,185,000	$ 10,814,000	$ (205,000)	$ 31,506,000	$ (1,418,000)	$ (1,096,000)	$ 492,000	$ (814,000)	$ 44,300,000	$ (2,836,000)	$ (1,387,000)