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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2012
INVENTORIES [Abstract]  
Inventory
Inventories include the following at December 31:

   
2012
  
2011
 
   
(thousands of dollars)
 
        
Raw material
 $3,591  $3,400 
Finished products
  6,249   6,056 
          
Total inventory
 $9,840  $9,456