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Asset Retirement Obligation
9 Months Ended
Sep. 30, 2013
Asset Retirement Obligation [Abstract]  
Asset Retirement Obligation

(7) Asset Retirement Obligation

     Our asset retirement obligations represent the estimated present value of the amount we will incur to plug, abandon, and remediate our producing properties at the end of their productive lives in accordance with applicable laws. The following table summarizes the Company's Asset Retirement Obligation transactions for the nine months ended September 30, 2013 (in thousands):

Balance December 31, 2012 $ 2,099  
 
Accretion expense   100  
Liabilities incurred   7  
Liabilities settled   (46 )
Assets sold   (348 )
Balance September 30, 2013 $ 1,812  

 

     Assets sold during the first nine months of 2013 represents asset retirement obligations related to the Swan Creek wells which were sold on August 16, 2013.