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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2016
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, 2016 and 2015 (in thousands):
 
2016
 
2015
Machinery and equipment
$
133,455

 
$
123,211

Vehicles
54,165

 
51,673

Furniture and fixtures
21,513

 
20,730

Computer hardware/software
87,416

 
95,993

Land, buildings and leasehold improvements
90,215

 
88,877

Construction in progress
7,544

 
5,688

 
394,308

 
386,172

Accumulated depreciation and amortization
(266,357
)
 
(264,154
)
 
$
127,951

 
$
122,018


Depreciation and amortization expense related to property, plant and equipment, including capital leases, was $38.9 million, $36.3 million and $36.5 million for the years ended December 31, 2016, 2015 and 2014, respectively.