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PROPERTY, PLANT, AND EQUIPMENT (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 3,190,573 | $ 2,977,904 |
Less - accumulated depreciation and amortization | 1,603,208 | 1,366,077 |
Total property, plant and equipment, net | 1,587,365 | 1,611,827 |
Interest capitalization | 600 | 5,500 | $ 2,000
Depreciation inclusive of landfill amortization | 251,400 | 247,000 | $ 234,000
Land |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 121,658 | 120,575 |
Asset retirement costs (non-landfill) |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 14,593 | 14,567 |
Landfill assets |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 144,539 | 139,708 |
Buildings and improvements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 414,384 | 373,160 |
Camp equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 170,012 | 152,740 |
Vehicles |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 617,959 | 541,022 |
Equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 1,644,102 | 1,483,736 |
Furniture and fixtures |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 5,708 | 5,492 |
Construction in progress |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 57,618 | $ 146,904 |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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