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Basis of Financial Statement Presentation and Significant Accounting Policies (Tables)
 9 Months Ended
Sep. 30, 2012
Basis of Financial Statement Presentation and Significant Accounting Policies [Abstract]  
Changes to asset retirement obligations
                 
    2012     2011  

Asset retirement obligations at beginning of period

   $ 256,651     $ 219,478  

Liabilities incurred during the period

     27,000       7,766  

Accretion expense

     16,926       15,184  
   

 

 

    

 

 

  

Asset retirement obligations at end of period

   $ 300,577     $ 242,428