Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2020

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, 2020 (in thousands).

Beginning asset retirement obligations	$	36,211
Liabilities incurred during period	2,245
Liabilities settled during period	(212)
Revisions in estimated cash flows	(1,875)
Accretion expense	1,449
Ending asset retirement obligations	37,818
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.