Long-Term Debt and Credit Arrangements (Obligation to Development Authority of Gordon County) (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 28, 2014	Dec. 28, 2013	Jun. 28, 2014 Note payable, Development Authority [Member] M	Nov. 02, 2012 Note payable, Development Authority [Member] Rate
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.00%
Obligation to Development Authority of Gordon County	$ 3,938	$ 4,447		$ 5,500
Debt Instrument, Periodic Payment			$ 106
Term of Obligation to Development Authority of Gordon County (in months)			57