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Leases - Maturities of Lease Payments (Details)
$ in Thousands
Dec. 27, 2020
USD ($)
Leases [Abstract]  
2021 $ 27,766
2022 30,327
2023 28,774
2024 28,823
2025 29,294
Later Years 135,413
Total building rental revenue from operating leases $ 280,397