XML 41 R28.htm IDEA: XBRL DOCUMENT v2.4.0.6
Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2012
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligations [Table Text Block]

A reconciliation of the Company's asset retirement obligations from the periods presented, are as follows:

 

    December 31,  
    2012     2011     2010  
                   
Beginning balance   $ 1,278,889     $ 1,235,193     $ 1,193,324  
Incurred during the period     (14,105 )     (13,397 )     0  
Additions for new wells     25,092       11,779       6,942  
Accretion expense     37,985       45,314       34,927  
Ending balance   $ 1,327,861     $ 1,278,889     $ 1,235,193