Debt (Details) (USD $)		6 Months Ended		6 Months Ended			6 Months Ended
	Dec. 31, 2011	Jun. 29, 2013 Revolving Credit Line [Member]	Jun. 30, 2012 Revolving Credit Line [Member]	Jun. 29, 2013 Loan Agreement [Member]	Dec. 29, 2012 Loan Agreement [Member]	Jan. 01, 2011 Loan Agreement [Member]	Jun. 29, 2013 2012 Term Loan Member]	Jan. 25, 2012 2012 Term Loan Member]
Debt Instrument [Line Items]
Additional term loan								$ 5,000,000
Periodic payment of loan							178,571
Period of loan							7 years
Maturity date of loan		Jan. 31, 2014					Jan. 31, 2019
Fixed rate of interest (in hundredths)		4.98%		4.98%			3.90%
Description of variable rate basis		LIBOR rate or People's Prime rate
Basis spread on variable rate (in hundredths)		2.25%
Floor rate of loan (in hundredths)		4.00%	3.25%
Line of credit facility amount outstanding	3,000,000
Fixed charge coverage ratio as multiple, minimum				1.1
Leverage ratio as multiple, maximum				1.75
Minimum tangible net worth				$ 52,800,000	$ 48,500,000	$ 43,000,000
Percentage of consolidated net income for increase of minimum tangible net worth requirement (in hundredths)				50.00%