Fair Value Measurements Non-Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 28, 2014
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Impairment of Long-Lived Assets Held-for-use			$ 10,803		$ 17,139
Impairment of Long-Lived Assets to be Disposed of	$ 394	$ 0	1,152	$ 332	2,474
Impairment of long-lived assets	10,018	$ 77	11,955	$ 2,606	19,613
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets Held and Used, Long Lived, Fair Value Disclosure	3,402		3,402		8,651
Assets Held-for-sale, Long Lived, Fair Value Disclosure	2,353		2,353		4,967
Total	5,755		5,755		13,618
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets Held and Used, Long Lived, Fair Value Disclosure	0		0		0
Assets Held-for-sale, Long Lived, Fair Value Disclosure	0		0		0
Total	0		0		0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets Held and Used, Long Lived, Fair Value Disclosure	0		0		0
Assets Held-for-sale, Long Lived, Fair Value Disclosure	0		0		0
Total	0		0		0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets Held and Used, Long Lived, Fair Value Disclosure	3,402		3,402		8,651
Assets Held-for-sale, Long Lived, Fair Value Disclosure	2,353		2,353		4,967
Total	$ 5,755		$ 5,755		$ 13,618