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Asset Retirement Obligations (Tables)
9 Months Ended
Sep. 30, 2019
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of changes in Company's asset retirement obligations
The following table summarizes the changes in the Company’s asset retirement obligations for the nine months ended September 30, 2019 (in thousands).
Beginning asset retirement obligations
$
31,086

Liabilities incurred during period
2,194

Liabilities settled during period
(155
)
Revisions in estimated cash flows
1,792

Divestitures during period
(2,145
)
Accretion expense
1,354

Ending asset retirement obligations
34,126

Less: current asset retirement obligations(1)
(619
)
Long-term asset retirement obligations
$
33,507

 _______________
(1)
Included in accrued liabilities in the Company’s interim unaudited condensed consolidated balance sheet at September 30, 2019.