Derivative Financial Instruments (Balance Sheet Location) (Details) (USD $)				12 Months Ended							12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 28, 2013 Diesel Fuel Swap [Member]	Dec. 28, 2013 Diesel Fuel Swap [Member] Accounts Payable and Accrued Expenses [Member]	Dec. 29, 2012 Diesel Fuel Swap [Member] Accounts Payable and Accrued Expenses [Member]	Dec. 31, 2011 Diesel Fuel Swap [Member] Accounts Payable and Accrued Expenses [Member]	Dec. 28, 2013 Diesel Fuel Swap [Member] Prepaid Expenses and Other Current Assets [Member]	Dec. 29, 2012 Diesel Fuel Swap [Member] Prepaid Expenses and Other Current Assets [Member]	Dec. 31, 2011 Diesel Fuel Swap [Member] Prepaid Expenses and Other Current Assets [Member]	Dec. 28, 2013 Cash Flow Hedging [Member] Interest Rate Swap [Member]
Notional Amount of Derivatives [Abstract]
Agregated notional principal amount											$ 50,000,000
Description of variable rate basis											one-month LIBOR
Diesel Fuel Risk [Abstract]
Expected hedging percentage of diesel fuel requirements for next twelve months				50.00%
Price Risk Cash Flow Hedges [Abstract]
Deferred net loss, net of tax				(100,000)
Derivative, Fair Value, Net [Abstract]
Derivative financial instruments	$ 176,000	$ (119,000)	$ (91,000)		$ 0	$ (242,000)	$ (256,000)	$ 176,000	$ 123,000	$ 165,000