v3.5.0.2
Property, Plant and Equipment (Tables)
6 Months Ended
Jun. 30, 2016
Property, Plant and Equipment [Abstract]  
Summary of costs for property, plant, and equipment
A summary of costs and accumulated depreciation for property, plant and equipment is as follows:

 
June 30,
2016
 
December 31,
2015
 
 
 
 
 
(in thousands)
Land and improvements
$
12,958

 
$
5,441

Buildings and improvements
14,529

 
3,049

Machinery and equipment
1,337,487

 
574,326

Automotive equipment
529

 
448

Furniture and fixtures
1,280

 
918

Railcars
16,265

 
16,315

Construction in progress
5,609

 
1,641

 
$
1,388,657

 
$
602,138

Less: Accumulated depreciation
234,089

 
209,005

Total property, plant and equipment, net
$
1,154,568

 
$
393,133