PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,834,092		$ 2,691,738
Less - accumulated depreciation and amortization	1,237,220		1,159,271
Total property, plant and equipment, net	1,596,872		1,532,467
Interest costs capitalized adjustment	1,200	$ 200
Depreciation inclusive of amortization	59,300	$ 57,400
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	101,460		100,582
Asset retirement costs (non-landfill)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	12,188		12,434
Landfill assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	140,792		136,624
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	353,869		344,209
Camp equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	158,619		149,361
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	529,386		500,619
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,400,407		1,328,915
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,477		5,337
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 131,894		$ 113,657