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Property and Equipment, net
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property and Equipment, net
Property and Equipment, net
Property and equipment, net consists of the following:
 
December 31,
2013
 
December 31,
2012
 
Estimated Useful Life (in years)
Railroad and equipment
$
33,627

 
$
33,627

 
15-30
Machinery and equipment
18,714

 
18,618

 
3-10
Office equipment
19,154

 
18,909

 
3-10
Autos and trucks
1,600

 
1,726

 
3-10
 
73,095

 
72,880

 
 
Less: Accumulated depreciation
62,206

 
61,101

 
 
 
10,889

 
11,779

 
 
Construction in progress
521

 
370

 
 
Total property and equipment, net
$
11,410

 
$
12,149

 
 


Depreciation expense on property and equipment was $2.5 million in 2013, $2.4 million in 2012 and $2.8 million in 2011.