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Employee Benefit Plans (Expected Benefit Payments Associated With The Pension And Postretirement Benefit Plans) (Details)
$ in Thousands
Dec. 27, 2015
USD ($)
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
2016 $ 3,995
2017 4,034
2018 4,108
2019 4,148
2020 4,244
2021 through 2025 $ 22,183