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PROPERTY, PLANT AND EQUIPMENT (Tables)
 12 Months Ended
Dec. 31, 2014
PROPERTY, PLANT AND EQUIPMENT  
Schedule of property, plant and equipment
 
December 31,
  
Estimated
Useful Lives
    
2014
    
2013
  
(in thousands)
            
Land
    
N/A
 
  
$
657
    
$
657
  
Buildings
    
7-40
      
17,237
      
17,113
  
Operating equipment and property
    
3-15
      
9,981
      
9,768
  
Furniture and fixtures
    
5-7
      
1,978
      
1,915
  
Vehicles
    
5-10
      
4,217
      
6,422
  
Gross property, plant and equipment
            
34,070
      
35,875
  
Less: accumulated depreciation
            
(24,180
)
    
(24,610
)
Net property, plant and equipment
          
$
9,890
    
$
11,265