PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 2,970,084		$ 2,970,084		$ 2,691,738
Less - accumulated depreciation and amortization	1,321,513		1,321,513		1,159,271
Total property, plant and equipment, net	1,648,571		1,648,571		1,532,467
Interest costs capitalized adjustment	1,500	$ 600	4,000	$ 1,200
Depreciation inclusive of amortization	62,600	$ 59,200	185,400	$ 175,500
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	122,337		122,337		100,582
Asset retirement costs (non-landfill)
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	14,590		14,590		12,434
Landfill assets
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	142,587		142,587		136,624
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	379,435		379,435		344,209
Camp equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	156,838		156,838		149,361
Vehicles
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	535,804		535,804		500,619
Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	1,465,378		1,465,378		1,328,915
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	5,546		5,546		5,337
Construction in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 147,569		$ 147,569		$ 113,657