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Other Postretirement Benefits - Schedule of Expected Benefit Payments (Details) - Other Postretirement Benefit Plans [Member]
$ in Thousands
Dec. 30, 2018
USD ($)
Other Postretirement Benefits  
2019 $ 5,802
2020 5,394
2021 4,962
2022 4,545
2023 4,196
2024-2028 $ 16,662