PROPERTY, PLANT, AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,332,595	$ 3,190,573
Less - accumulated depreciation and amortization	1,770,617	1,603,208
Total property, plant and equipment, net	1,561,978	1,587,365
Interest capitalization	600	600	$ 5,500
Depreciation inclusive of landfill amortization	264,300	251,400	$ 247,000
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	123,734	121,658
Asset retirement costs (non-landfill)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	15,148	14,593
Landfill assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	154,918	144,539
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	440,188	414,384
Camp and lodging equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	152,998	170,012
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	721,735	617,959
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,697,490	1,644,102
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,453	5,708
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 20,931	$ 57,618