Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2012

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

During the three months ended March 31, 2012, Energen Resources recognized amounts representing expected future costs associated with site reclamation, facilities dismantlement, and plug and abandonment of wells as follows:

(in thousands)
Balance of ARO as of December 31, 2011	$	107,340
Liabilities incurred	1,260
Liabilities settled	(204		)
Accretion expense	1,813
Balance of ARO as of March 31, 2012	$	110,209