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Leases - Schedule of Minimum Contractual Agreements Under Royalty Agreements (Details)
$ in Thousands
Jan. 02, 2021
USD ($)
Royalty Agreements  
2021 $ 9,916
2022 9,880
2023 9,594
2024 9,295
2025 9,052
Summit Materials, LLC  
Royalty Agreements  
2021 9,916
2022 9,880
2023 9,594
2024 9,295
2025 $ 9,052