SIGNIFICANT ACCOUNTING POLICIES (Tables)
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12 Months Ended |
Dec. 31, 2013
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Accounting Policies [Abstract] |
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Schedule of asset classification and estimated useful life |
The Company depreciates and amortizes the cost of these assets, using the straight-line method as follows: | | | | Asset Classification | | Estimated Useful Life | Buildings and building improvements | | | Buildings |
| 30–40 years | Leasehold and building improvements | | 2–40 years | Camp equipment | | 12–15 years | Vehicles | | 3–12 years | Equipment | | | Capitalized software and computer equipment | | 3–5 years | Solar equipment | | 20 years | Containers and railcars | | 15–20 years | All other equipment | | 8–20 years | Furniture and fixtures | | 5–8 years |
Property, plant and equipment consisted of the following (in thousands): | | | | | | | | | | December 31, 2013 | | December 31, 2012 (As Adjusted) | Land | $ | 99,794 |
| | $ | 104,379 |
| Asset retirement costs (non-landfill) | 10,938 |
| | 10,111 |
| Landfill assets | 100,983 |
| | 77,952 |
| Buildings and improvements | 327,956 |
| | 359,816 |
| Camp equipment | 187,831 |
| | 135,827 |
| Vehicles | 425,296 |
| | 385,172 |
| Equipment | 1,201,296 |
| | 1,034,856 |
| Furniture and fixtures | 5,260 |
| | 3,735 |
| Construction in progress | 58,010 |
| | 34,124 |
| | 2,417,364 |
| | 2,145,972 |
| Less - accumulated depreciation and amortization | 815,194 |
| | 612,919 |
| Total property, plant and equipment, net | $ | 1,602,170 |
| | $ | 1,533,053 |
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Schedule of Property, Plant and Equipment, Landfill Assets |
As of December 31, 2013, the Company had 11 active landfill sites (including the Company's two non-commercial landfills), which have estimated remaining lives (based on anticipated waste volumes and remaining highly probable airspace) as follows: | | | | | | | | | | | | | | | | | | | Remaining Lives (Years) | | Remaining Highly Probable Airspace (cubic yards) (in thousands) | Facility Name | | Location | | Permitted | | Unpermitted | | Total | Altair | | Texas | | 12 | | 752 |
| | — |
| | 752 |
| Buttonwillow | | California | | 27 | | 7,701 |
| | — |
| | 7,701 |
| Deer Park | | Texas | | 9 | | 342 |
| | — |
| | 342 |
| Deer Trail | | Colorado | | 41 | | 2,061 |
| | — |
| | 2,061 |
| Grassy Mountain | | Utah | | 29 | | 2,058 |
| | — |
| | 2,058 |
| Kimball | | Nebraska | | 10 | | 281 |
| | — |
| | 281 |
| Lambton | | Ontario | | 49 | | 120 |
| | 4,708 |
| | 4,828 |
| Lone Mountain | | Oklahoma | | 17 | | 2,769 |
| | — |
| | 2,769 |
| Ryley | | Alberta | | 11 | | 912 |
| | 880 |
| | 1,792 |
| Sawyer | | North Dakota | | 16 | | 4,007 |
| | — |
| | 4,007 |
| Westmorland | | California | | 64 | | 2,732 |
| | — |
| | 2,732 |
| | | | | | | 23,735 |
| | 5,588 |
| | 29,323 |
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Remaining Highly Probable Airspace |
The following table presents the remaining highly probable airspace from January 1, 2011 through December 31, 2013 (in thousands of cubic yards): | | | | | | | | | | | 2013 | | 2012 | | 2011 | Remaining capacity at January 1, | 29,643 |
| | 27,557 |
| | 28,557 |
| Addition of highly probable airspace, net | 1,218 |
| | 3,598 |
| | 102 |
| Consumed | (1,538 | ) | | (1,512 | ) | | (1,102 | ) | Remaining capacity at December 31, | 29,323 |
| | 29,643 |
| | 27,557 |
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