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Asset Retirement Obligations
9 Months Ended
Sep. 30, 2020
Asset Retirement Obligation Disclosure [Abstract]  
ASSET RETIREMENT OBLIGATIONS ASSET RETIREMENT OBLIGATIONS
The following table summarizes the changes in the Company’s asset retirement obligations for the nine months ended September 30, 2020 (in thousands).
Beginning asset retirement obligations$36,211 
Liabilities incurred during period2,245 
Liabilities settled during period(212)
Revisions in estimated cash flows(1,875)
Accretion expense1,449 
Ending asset retirement obligations37,818 
Less: current asset retirement obligations(1)
(596)
Long-term asset retirement obligations$37,222 
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(1)Included in accrued liabilities in the Company’s interim unaudited condensed consolidated balance sheet at September 30, 2020.