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Property and Equipment, net
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Abstract]  
Property and Equipment, net
Property and Equipment, net
Property and equipment, net consists of the following:
 
December 31,
2014
 
December 31,
2013
 
Estimated Useful Life (in years)
Railroad and equipment
$
33,627

 
$
33,627

 
15-30
Machinery and equipment
16,498

 
18,714

 
3-10
Office equipment
18,844

 
19,154

 
3-10
Autos and trucks
866

 
1,600

 
3-10
 
69,835

 
73,095

 
 
Less: Accumulated depreciation
60,284

 
62,206

 
 
 
9,551

 
10,889

 
 
Construction in progress
652

 
521

 
 
Total property and equipment, net
$
10,203

 
$
11,410

 
 


Depreciation expense on property and equipment was $2.2 million in 2014, $2.5 million in 2013 and $2.4 million in 2012.