Employee Benefit Plans - Multiemployer Plans (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Jan. 01, 2022 |
|
| Multiemployer Plans [Line Items] | ||
| Contributions of Company | $ 129 | $ 126 |
| Construction Industry Laborers Pension Fund | ||
| Multiemployer Plans [Line Items] | ||
| Contributions of Company | 108 | 107 |
| Operating Engineers Local 101 Pension Plan | ||
| Multiemployer Plans [Line Items] | ||
| Contributions of Company | 21 | 19 |
| Summit Materials, LLC | ||
| Multiemployer Plans [Line Items] | ||
| Contributions of Company | 129 | 126 |
| Summit Materials, LLC | Construction Industry Laborers Pension Fund | ||
| Multiemployer Plans [Line Items] | ||
| Contributions of Company | 108 | 107 |
| Summit Materials, LLC | Operating Engineers Local 101 Pension Plan | ||
| Multiemployer Plans [Line Items] | ||
| Contributions of Company | $ 21 | $ 19 |