Summary of Organization and Significant Accounting Policies - Estimated Useful Lives of Assets (Detail)
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12 Months Ended |
Dec. 27, 2014 |
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| Minimum [Member] | Buildings and Improvements [Member] |
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
7 years
|
| Minimum [Member] | Plants, Machinery and Equipment [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
20 years
|
| Minimum [Member] | Mobile Equipment and Barges [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
15 years
|
| Minimum [Member] | Office Equipment [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
3 years
|
| Minimum [Member] | Truck and Auto Fleet [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
5 years
|
| Minimum [Member] | Landfill Airspace and Improvements [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
5 years
|
| Minimum [Member] | Property, Plant and Equipment, Other Types [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
2 years
|
| Maximum [Member] | Buildings and Improvements [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
40 years
|
| Maximum [Member] | Plants, Machinery and Equipment [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
40 years
|
| Maximum [Member] | Mobile Equipment and Barges [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
20 years
|
| Maximum [Member] | Office Equipment [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
6 years
|
| Maximum [Member] | Truck and Auto Fleet [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
10 years
|
| Maximum [Member] | Landfill Airspace and Improvements [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
60 years
|
| Maximum [Member] | Property, Plant and Equipment, Other Types [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
10 years
|