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Segmented Information (Tables)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
  March 31, 2013   Canada     Bulgaria     Total  
               
     Revenue            
     Restricted cash   2,339         2,339  
     Property and equipment   4,658         4,658  
     Oil and gas properties       351,535     351,535  
                     
  March 31, 2012   Canada     Bulgaria     Total  
               
  Revenue   3,391         3,391  
  Property and equipment   6,315         6,315  
  Oil and gas properties       279,389     279,389