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Asset Retirement Obligations
6 Months Ended
Jun. 30, 2011
Asset Retirement Obligations [Abstract]  
Asset Retirement Obligations
(4) Asset Retirement Obligations
We have asset retirement obligations associated with the future abandonment of our pipelines and related facilities and our offshore oil and gas properties. The following table summarizes our asset retirement obligation transactions during the three months ended June 30, 2011:
         
Asset retirement obligations as of December 31, 2010
  $ 2,727,856  
Liabilities incurred
     
Liabilities settled
    (986 )
Accretion expense
    66,079  
 
     
Asset retirement obligations as of June 30, 2011
    2,792,949  
Less: current portion of asset retirement obligations
    191,752  
 
     
Asset retirement obligations long-term balance as of June 30, 2011
  $ 2,601,197