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Asset Retirement Obligations
 9 Months Ended
Sep. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations
Asset Retirement Obligations
The following table reflects the changes in the Company’s ARO during the nine months ended September 30, 2014:
 
(In thousands)
Balance at December 31, 2013
$
36,458

Liabilities incurred during period
4,850

Liabilities settled during period(1)
(2,062
)
Accretion expense during period(2)
1,395

Revisions to estimates
863

Balance at September 30, 2014
$
41,504

 ___________________
(1)
Liabilities settled during period include ARO related to the properties sold in the Sanish Divestiture.
(2)
Included in depreciation, depletion and amortization on the Company’s Condensed Consolidated Statement of Operations.
At September 30, 2014, the current portion of the total ARO balance was approximately $0.5 million and is included in accrued liabilities on the Company’s Condensed Consolidated Balance Sheet.