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Asset Retirement Obligations
6 Months Ended
Jun. 30, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations
Asset Retirement Obligations
The following table reflects the changes in the Company’s ARO during the six months ended June 30, 2017:
 
(In thousands)
Balance at December 31, 2016
$
49,687

Liabilities incurred during period
661

Liabilities settled during period
(101
)
Accretion expense during period(1)
1,316

Revisions to estimates
(214
)
Balance at June 30, 2017
$
51,349

___________________
(1) Included in depreciation, depletion and amortization on the Company’s Condensed Consolidated Statements of Operations.
At June 30, 2017, the current portion of the total ARO balance was approximately $0.3 million and was included in accrued liabilities on the Company’s Condensed Consolidated Balance Sheet.