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PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
 
December 31,
 
Estimated
Useful Lives
   
2012
   
2011
 
(in thousands)
                 
Land
    N/A     $ 657     $ 657  
Buildings
    7-40       17,096       17,012  
Operating equipment and property
    3-15       9,913       9,684  
Furniture and fixtures
    5-7       1,842       1,801  
Vehicles
    5-10       6,207       6,207  
Gross property, plant and equipment
            35,715       35,361  
Less: accumulated depreciation
            (24,245 )     (23,477 )
Net property, plant and equipment
          $ 11,470     $ 11,884