Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Discontinued Operations and Disposal Groups [Abstract]
Net sales of discontinued operations	$ 0	$ 5,046	$ 0	$ 15,303
Income from discontinued operations	86	246	86	1,191
Other income (expense),net, from discontinued operations	0	5	0	(66)
Earnings from discontinued operations before income taxes	86	251	86	1,125
Income tax expense	22	53	22	255
Earnings from discontinued operations before gain on disposal, net of taxes	64	198	64	870
Gain on disposal of discontinued operations	0	0	0	0
Benefit (Provision) for income taxes on gain	420	0	420	0
Net gain on disposal	420	0	420	0
Total earnings from discontinued operations, net of tax	$ 484	$ 198	$ 484	$ 870