Discontinued Operations Statement of Operations Information (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Discontinued Operations [Line Items]
Net sales	$ 0	$ 25,300,000	$ 9,190,000	$ 51,394,000
Income (loss) from discontinued operations before income taxes	(223,000)	3,128,000	400,000	6,003,000
Income tax expense (benefit) on discontinued operations	(88,000)	1,202,000	154,000	2,306,000
(Gain) loss on sale of discontinued operations, net of taxes	(304,000)	0	(5,319,000)	0
Income (loss) from discontinued operations, net of taxes	(439,000)	1,926,000	(5,073,000)	3,697,000
Discontinued operations per share - basic	$ (0.01)	$ 0.03	$ (0.08)	$ 0.06
Discontinued Operations [Abstract]
Tax effect on income (loss) from discontinued operations	200,000		3,400,000
Prior Discontinued Operations [Member]
Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of taxes			1,800,000
Discontinued Operations [Abstract]
Tax effect on income (loss) from discontinued operations			$ 1,200,000