Debt (Details) (Amended Credit Facility, Wells Fargo Bank [Member], USD $)	3 Months Ended
	Mar. 29, 2014	Dec. 28, 2013
Amended Credit Facility, Wells Fargo Bank [Member]
Line of Credit Facility [Line Items]
Current borrowing capacity	$ 20,000,000
Line of Credit Facility Amended Expiration Date	Aug. 31, 2016
Maximum borrowing capacity	50,000,000
Adjusted LIBO Rate basis (in hundredths)	1.25%
Adjusted Base Rate - Daily One-Month LIBO Rate basis (in hundredths)	1.50%
Available remaining borrowing capacity	20,000,000	20,000,000
Outstanding letters of credit	$ 0	$ 0