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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2012
Property and Equipment Abstract  
Property, Plant and Equipment [Table Text Block]
   December 31,
    2012  2011
Oil and gas properties under the full cost method:     
 Subject to amortization$ 915,801 $ 496,667
 Not subject to amortization:     
  Acquired in 2012  141,837   -
  Acquired in 2011  107,510   138,912
  Acquired in 2010  47,148   47,208
  Acquired prior to 2010  52,938   72,214
     1,265,234   755,001
        
Computers, furniture and fixtures  8,863   6,421
 Total property and equipment  1,274,097   761,422
        
Accumulated depreciation, depletion and amortization  (270,656)   (212,226)
        
Net property and equipment$ 1,003,441 $ 549,196

Costs Incurred in the Year Ended December 31,
  2012 2011 2010 Prior to 2010 Total
                
Acquisition costs$ 47,995 $ 48,904 $ 23,648 $ 15,176 $ 135,723
Exploration costs  72,490   54,729   23,500   37,762   188,481
Capitalized interest  21,352   3,877   -   -   25,229
                
Total oil and gas properties not              
 subject to amortization$ 141,837 $ 107,510 $ 47,148 $ 52,938 $ 349,433