XML 28 R12.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment  
Property, Plant and Equipment

Note 5: Property, Plant and Equipment

 

Property, plant and equipment are presented at cost net of accumulated depreciation and consist of the following:

 

December 31, 2018  2017 
(in thousands)        
Land $21,159  $19,991 
Buildings and leasehold improvements  140,269   138,072 
Operating equipment  1,429,906   1,419,670 
Computer software  24,619   23,017 
Furniture and fixtures  7,606   7,656 
Vehicles  528,250   494,833 
Gross property, plant and equipment  2,151,809   2,103,239 
Less: accumulated depreciation  (1,633,827)  (1,659,311)
Net property, plant and equipment $517,982  $443,928 

 

Depreciation expense was $166.2 million in 2018, $166.9 million in 2017, and $220.6 million in 2016, and includes amounts recorded as costs of revenues. There were no capital leases outstanding as of December 31, 2018 and December 31, 2017. The Company had accounts payable for purchases of property and equipment of $14.8 million as of December 31, 2018, $7.1 million as of December 31, 2017, and $3.4 million as of December 31, 2016.