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Debt (Summary of Loss on Extinguishment of Debt) (Details) - USD ($)
$ in Thousands
4 Months Ended 12 Months Ended
Nov. 30, 2016
Dec. 29, 2017
Dec. 30, 2016
Jan. 01, 2016
Debt Instrument [Line Items]        
Loss on extinguishment of debt   $ 6,239 $ 13,901 $ 0
Senior subordinated notes [Member] | 2019 Notes [Member]        
Debt Instrument [Line Items]        
Cash inducements $ 2,400   2,394  
Waiver of requirement to repay interest, described above 3,600   3,572  
Difference between the total settlement consideration attributed to the liability component of the 2019 Notes and the net carrying value of the liability     7,338  
Unamortized discount on redeemed notes     83  
Third-party costs     514  
Loss on extinguishment of debt $ 13,900   $ 13,901