Restructuring Costs Restructing Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 30, 2013	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		$ 679	$ 850	$ 1,064	$ 2,242
Restructuring Charges		11	99	(50)
Reclassification within a liability account	0
Payments for Restructuring		(182)	(313)	(1,128)
Restructuring and Related Cost, Cost Incurred to Date		20,234
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		679	692	904	1,949
Restructuring Charges		12	91	(69)
Reclassification within a liability account	156
Payments for Restructuring		(181)	(303)	(976)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		0	158	160	293
Restructuring Charges		(1)	8	19
Reclassification within a liability account	(156)
Payments for Restructuring		$ (1)	$ (10)	$ (152)