FIXED ASSETS (Tables)

9 Months Ended

Sep. 30, 2017

Property, Plant and Equipment [Abstract]

Schedule of Fixed Assets

Fixed assets consisted of the following:

(in thousands)	September 30, 2017			December 31, 2016
Land and land improvements	$	38,209		$	37,835
Buildings and building improvements	192,210			192,874
Machinery, equipment and computer systems	650,850			607,869
Trucks, trailers and automobiles	33,350			32,723
Furniture and fixtures	4,612			4,720
Construction in progress	19,968			22,098
Capital leases (1)	2,722			3,303
	941,921			901,422
Accumulated depreciation	(446,090		)	(399,472		)
	495,831			501,950
Fixed assets held for sale	(33		)	(66		)
Fixed assets, net	$	495,798		$	501,884

⁽¹⁾ Gross amounts of assets recorded under capital leases represent machinery, equipment and computer systems as of September 30, 2017 and December 31, 2016.