Fair Value Measurements Fair Value of Items Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Jan. 03, 2016	Jun. 28, 2015	Dec. 28, 2014	Sep. 28, 2014	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held and used, Total losses					$ 22,346	$ 17,139
Held for sale, Total losses					2,655	2,474
Impairment of long-lived assets	$ 11,533	$ 10,018	$ 8,389	$ 8,618	25,001	19,613	$ 36,385
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held and used	10,244		8,651		10,244	8,651
Held for sale	4,328		4,967		4,328	4,967
Total	14,572		13,618		14,572	13,618
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held and used	0		0		0	0
Held for sale	0		0		0	0
Total	0		0		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held and used	0		0		0	0
Held for sale	0		0		0	0
Total	0		0		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held and used	10,244		8,651		10,244	8,651
Held for sale	4,328		4,967		4,328	4,967
Total	$ 14,572		$ 13,618		$ 14,572	$ 13,618