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Asset Retirement Obligations (Tables)
 6 Months Ended
Jun. 30, 2016
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Components of the Change in the ARO Balance
The following table reflects the components of the change in Energen’s ARO balance:

(in thousands)
 
Balance as of December 31, 2015
$
89,990

Liabilities incurred
86

Liabilities settled
(416
)
Accretion expense
3,536

Reclassification associated with held for sale properties*
(1,723
)
Balance as of June 30, 2016
$
91,473


*Adjustment to the reclassification of the asset retirement obligation associated with certain properties included as liabilities related to assets held for sale in current liabilities on the balance sheet at June 30, 2016.