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Property And Equipment
12 Months Ended
Dec. 31, 2014
Property And Equipment [Abstract]  
Property And Equipment

7.  PROPERTY AND EQUIPMENT

 

The components of property and equipment are as follows (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31,

 

2014

 

2013

Plant equipment

$

777,987 

 

$

749,627 

Buildings and improvements

 

159,178 

 

 

147,663 

Land and improvements

 

73,819 

 

 

59,481 

Railroad track and equipment

 

40,882 

 

 

39,852 

Construction-in-progress

 

23,276 

 

 

3,789 

Computers and software

 

9,305 

 

 

7,380 

Office furniture and equipment

 

2,127 

 

 

1,662 

Leasehold improvements and other

 

13,179 

 

 

12,111 

Total property and equipment

 

1,099,753 

 

 

1,021,565 

Less: accumulated depreciation

 

(274,543)

 

 

(215,519)

Property and equipment, net

$

825,210 

 

$

806,046