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Long-Term Debt (Details) - USD ($) $ in Thousands	Oct. 01, 2017	Sep. 27, 2017	Jan. 01, 2017	Mar. 23, 2015
Debt Instrument [Line Items]
Capital lease obligations	$ 471		$ 768
Other long-term debt	1,200		370
Total long-term debt	625,799		470,745
Senior Notes \| Senior Notes Due 2023
Debt Instrument [Line Items]
Long-term debt	625,000		475,000
Unamortized premium on 2023 Notes	5,988		0
Debt issuance costs for 2023 Notes	(6,860)	$ (2,100)	$ (5,393)	$ (7,100)
Revolving Credit Facility \| ABL Facility 2020
Debt Instrument [Line Items]
Revolving credit facilities	$ 0