Fixed Assets (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013 Cambridge Manufacturing Facility Closing [Member]	Jun. 29, 2013 Cambridge Manufacturing Facility Closing [Member]	Sep. 29, 2012 Corsicana Manufacturing Facility Closing [Member] Cost of Sales [Member]	Sep. 28, 2013 Fixed assets [Member]	Sep. 29, 2012 Fixed assets [Member]	Sep. 28, 2013 Fixed assets [Member]	Sep. 29, 2012 Fixed assets [Member]	Dec. 29, 2012 Machinery, equipment and computer systems Cambridge Manufacturing Facility Closing [Member]	Sep. 28, 2013 Fixed assets held for sale	Dec. 29, 2012 Fixed assets held for sale
Property, Plant and Equipment [Line Items]
Depreciation expense related to fixed assets	$ 12,800,000	$ 12,000,000	$ 37,600,000	$ 35,600,000
Impairment charges	0	80,000	1,900,000	207,000				0	100,000	0	200,000	2,500,000
Asset relocation expense						1,000,000	2,000,000
Gain (Loss) on Sale of Property Plant Equipment			1,022,000	(87,000)	1,100,000
Fixed assets held for sale													(4,886,000)	(3,778,000)
GreenvilleClosingCosts		$ 800,000