PROPERTY, PLANT AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,545,348	$ 2,417,364
Less - accumulated depreciation and amortization	965,647	815,194
Total property, plant and equipment, net	1,579,701	1,602,170
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	99,006	99,794
Asset retirement costs (non-landfill)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,899	10,938
Landfill assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	109,114	100,983
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	330,405	327,956
Camp equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	178,221	187,831
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	466,726	425,296
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,282,855	1,201,296
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,574	5,260
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 62,548	$ 58,010