Property, Plant and Equipment

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment in the accompanying Consolidated Balance Sheets consisted of the following amounts as of December 31, 2018 and 2017 (in thousands):

	2018			2017
Machinery and equipment	$	151,339		$	138,592
Vehicles	58,205			55,648
Furniture and fixtures	20,655			20,195
Computer hardware/software	98,415			95,716
Land, buildings and leasehold improvements	97,937			92,145
Construction in progress	14,443			6,779
	440,994			409,075
Accumulated depreciation and amortization	(306,643		)	(281,919		)
	$	134,351		$	127,156

Depreciation and amortization expense related to property, plant and equipment, including capital leases, was $38.5 million, $39.9 million and $38.9 million for the years ended December 31, 2018, 2017 and 2016, respectively.