PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,651,107		$ 2,651,107		$ 2,564,340
Less - accumulated depreciation and amortization	1,119,559		1,119,559		1,005,506
Total property, plant and equipment, net	1,531,548		1,531,548		1,558,834
Interest costs capitalized adjustment	600	$ 100	1,200	$ 400
Depreciation inclusive of amortization	59,200	$ 60,900	175,500	$ 178,000
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	100,811		100,811		98,507
Asset retirement costs (non-landfill)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	12,455		12,455		10,871
Landfill assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	126,904		126,904		110,984
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	338,791		338,791		338,242
Camp equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	155,363		155,363		180,575
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	495,270		495,270		471,615
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,312,699		1,312,699		1,302,424
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,330		5,330		5,517
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 103,484		$ 103,484		$ 45,605