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Postretirement Benefits Postretirement Benefits (Details)
$ in Thousands
12 Months Ended
Jan. 03, 2016
USD ($)
Compensation and Retirement Disclosure [Abstract]  
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components $ 66
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components 47
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation 584
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation $ 434