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Post-Retirement Health Care (Estimated Future Benefit Payments) (Details) - Postretirement Health Coverage
$ in Thousands
Dec. 28, 2019
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
Fiscal 2020 $ 1,081
Fiscal 2021 1,069
Fiscal 2022 1,069
Fiscal 2023 1,083
Fiscal 2024 1,098
Fiscal 2025 – 2029 5,933
Expected Contributions During Fiscal 2019 $ 1,081