PROPERTY, PLANT AND EQUIPMENT (Tables)

3 Months Ended

Mar. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consisted of the following (in thousands):

	March 31, 2017		December 31, 2016
Land	$	122,184	$	120,575
Asset retirement costs (non-landfill)	15,173		14,567
Landfill assets	140,518		139,708
Buildings and improvements	406,562		373,160
Camp equipment	151,561		152,740
Vehicles	558,175		541,022
Equipment	1,591,511		1,483,736
Furniture and fixtures	5,507		5,492
Construction in progress	42,305		146,904
	3,033,496		2,977,904
Less - accumulated depreciation and amortization	1,424,006		1,366,077
Total property, plant and equipment, net	$	1,609,490	$	1,611,827