Property, Plant and Equipment |
Property, plant and equipment consisted of the following (in thousands): | | | | | | | | | | September 30, 2016 | | December 31, 2015 | Land | $ | 122,337 |
| | $ | 100,582 |
| Asset retirement costs (non-landfill) | 14,590 |
| | 12,434 |
| Landfill assets | 142,587 |
| | 136,624 |
| Buildings and improvements | 379,435 |
| | 344,209 |
| Camp equipment | 156,838 |
| | 149,361 |
| Vehicles | 535,804 |
| | 500,619 |
| Equipment | 1,465,378 |
| | 1,328,915 |
| Furniture and fixtures | 5,546 |
| | 5,337 |
| Construction in progress | 147,569 |
| | 113,657 |
| | 2,970,084 |
| | 2,691,738 |
| Less - accumulated depreciation and amortization | 1,321,513 |
| | 1,159,271 |
| Total property, plant and equipment, net | $ | 1,648,571 |
| | $ | 1,532,467 |
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