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Asset Retirement Obligation
3 Months Ended
Mar. 31, 2012
Asset Retirement Obligation
8. Asset Retirement Obligation

The Company records a liability for the estimated costs to be incurred in connection with the abandonment of oil and natural gas properties in the future. This liability is included in the caption “other” in the liabilities section of the consolidated balance sheet. The following table describes the changes to the Company’s asset retirement obligations during the three months ended March 31, 2012 and 2011 (in thousands):

 

     Three Months Ended
March  31,
 
     2012     2011  

Balance at beginning of year

   $ 3,455      $ 3,063   

Liabilities incurred

     106        65   

Liabilities settled

     (68     (15

Accretion expense

     37        35   

Revision in estimated costs of plugging oil and natural gas wells

     550        (2
  

 

 

   

 

 

 

Asset retirement obligation at end of period

   $ 4,080      $ 3,146