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Long-Term Debt and Credit Arrangements (Details) - Long-term Debt, Type [Domain] - Debt Instrument, Name [Domain] - USD ($)
$ in Thousands
Jun. 27, 2015
Dec. 27, 2014
Debt Instrument [Line Items]    
Revolving credit facility - Tranche A $ 84,417 $ 82,897
Notes payable - buildings 14,246 8,295
Acquisition note payable - Obligation to Development Authority of Gordon County 2,872 3,413
Acquisition note payable - Robertex 3,095 3,062
Notes payable - equipment and other 15,501 14,623
Capital lease obligations 13,661 14,998
Total long-term debt 133,792 127,288
Less: current portion of long-term debt (9,208) (9,078)
Long-term debt $ 124,584 $ 118,210