Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2021

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

A reconciliation of our liability for plugging and abandonment costs for the three months ended March 31, 2021 and the year ended December 31, 2020 is as follows (in thousands):

	Three Months Ended March 31,  2021			Year Ended December 31, 2020
Beginning of period	$	79,822		$	251,076
Liabilities incurred		28			1,483
Acquisitions		—			123
Liabilities settled		(720	)		(4,634	)
Disposition of wells		—			(176,748	)
Accretion expense		1,375			7,518
Change in estimate		811			1,004
End of period		81,316			79,822
Less current portion		(6,689	)		(6,689	)
Long-term asset retirement obligations	$	74,627		$	73,133