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Benefit Plans - Contributions and Benefit Payments (Details) $ in Thousands | Dec. 26, 2020 USD ($)
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Pension Plan [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
2021 | $ 3,428
2022 | 2,945
2023 | 3,050
2024 | 3,160
2025 | 3,273
2026-2030 | 18,210
Total | 34,066
Other Postretirement Benefits Plan [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Company's expected contribution to benefit plans in next fiscal year | 1,000
2021 | 947
2022 | 942
2023 | 1,016
2024 | 977
2025 | 974
2026-2030 | 4,700
Total | $ 9,556

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