Accrued Mining and Landfill Reclamation - Activity for Asset Retirement Obligations (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Jan. 01, 2022 |
Jan. 02, 2021 |
|
| Asset Retirement Obligation, Activity | |||
| Beginning balance | $ 45,051 | $ 43,603 | |
| Acquired obligations | 739 | 337 | |
| Change in cost estimate | (1,238) | 1,427 | |
| Settlement of reclamation obligations | (2,756) | (3,240) | |
| Dispositions | (4,150) | 0 | |
| Accretion expense | 2,613 | 2,924 | $ 2,638 |
| Ending balance | 40,259 | 45,051 | 43,603 |
| Summit Materials, LLC | |||
| Asset Retirement Obligation, Activity | |||
| Beginning balance | 45,051 | 43,603 | |
| Acquired obligations | 739 | 337 | |
| Change in cost estimate | (1,238) | 1,427 | |
| Settlement of reclamation obligations | (2,756) | (3,240) | |
| Accretion expense | 2,613 | 2,924 | 2,638 |
| Ending balance | $ 40,259 | $ 45,051 | $ 43,603 |