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Asset Retirement Obligations
6 Months Ended
Jun. 30, 2011
Asset Retirement Obligations [Abstract]  
Asset Retirement Obligations
Note 5 — Asset Retirement Obligations
     The following table reflects the changes to the Company’s asset retirement obligations for the period indicated (in thousands):
                         
    Predecessors              
    January 1, 2010 to     March 6, 2010 to     Six Months Ended  
    March 5, 2010     June 30, 2010     June 30, 2011  
Asset retirement obligations at beginning of period
  $ 6,552     $ 6,648     $ 7,150  
Liabilities incurred
          3       44  
Liabilities settled
    (1 )     (10 )      
Accretion
    97       193       322  
Divestitures
                 
 
                 
Asset retirement obligations at end of period
  $ 6,648     $ 6,834     $ 7,516