v2.4.0.6
Inventory (Tables)
12 Months Ended
Dec. 31, 2012
Inventory  
Schedule of inventories

 

 

 
  December 31,  
 
  2012   2011  

Parts and other consumables

  $ 8,559   $ 11,884  

Fuel

    8,296     6,744  
           

Total inventory

  $ 16,855   $ 18,628