Discontinued Operations (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Discontinued Operations [Line Items]
Net sales	$ 0	$ 2,500,000	$ 1,700,000	$ 7,700,000
Production margin	0	(600,000)	(2,300,000)	(1,700,000)
Expenses	0	100,000	400,000	600,000
Facility closure costs	0	0	5,900,000	0
Loss from operations	0	(700,000)	(8,600,000)	(2,300,000)
Benefit for taxes on income	0	(200,000)	(2,900,000)	(700,000)
Loss from discontinued operations, net of tax	$ (21,000)	$ (487,000)	$ (5,704,000)	$ (1,549,000)