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Long-Term Debt and Credit Arrangements (Obligation to Development Authority of Gordon County) (Details) - Debt Instrument, Name [Domain]
$ in Thousands
6 Months Ended
Jun. 27, 2015
USD ($)
mo
Dec. 27, 2014
USD ($)
Nov. 02, 2012
USD ($)
Rate
Debt Instrument [Line Items]      
Acquisition note payable - Obligation to Development Authority of Gordon County $ 2,872 $ 3,413  
Note payable, Development Authority [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage | Rate     6.00%
Acquisition note payable - Obligation to Development Authority of Gordon County     $ 5,500
Debt Instrument, Periodic Payment $ 106    
Term of Obligation to Development Authority of Gordon County (in months) | mo 57