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Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in Asset Retirement Obligation

The following table reflects the components of the change in Energen’s ARO balance for the six months ended June 30, 2014:

(in thousands)
 
Balance as of December 31, 2013
$
108,533

Liabilities incurred
1,504

Liabilities settled
(676
)
Accretion expense
3,726

Balance as of June 30, 2014
$
113,087