Employee Benefit Plans - Estimated Benefit Payments (Detail) $ in Thousands |
Dec. 27, 2014
USD ($)
|
|---|---|
| Pension Benefits [Member] | |
| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |
| 2015 | $ 1,715 |
| 2016 | 1,743 |
| 2017 | 1,740 |
| 2018 | 1,773 |
| 2019 | 1,777 |
| 2020 - 2024 | 8,524 |
| Total | 17,272 |
| Healthcare & Life Ins [Member] | |
| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |
| 2015 | 1,041 |
| 2016 | 1,015 |
| 2017 | 893 |
| 2018 | 893 |
| 2019 | 823 |
| 2020 - 2024 | 3,912 |
| Total | $ 8,577 |