Derivative Financial Instruments (Details 2) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Derivative Instruments, Gain (Loss)
Loss Reclassified from Accumulated OCI into Income (Effective Portion), included in rent expense during period	$ (900,000)
Reclassification of interest rate swap losses included in accumulated other comprehensive loss into earnings in the next 12 months	500,000
Cash flow hedges | Interest rate swap
Derivative Instruments, Gain (Loss)
Loss Recognized in OCI on Derivatives (Effective Portion) during period	(956,000)	(424,000)	(2,640,000)
Cash flow hedges | Interest rate swap | Rent expenses
Derivative Instruments, Gain (Loss)
Loss Reclassified from Accumulated OCI into Income (Effective Portion), included in rent expense during period	(2,197,000)	(2,237,000)	(3,321,000)
Cash flow hedges | Interest rate swap | Interest expense
Derivative Instruments, Gain (Loss)
Loss Reclassified from Accumulated OCI into Income (Effective Portion), included in rent expense during period	$ (98,000)