Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2019

Asset Retirement Obligation Disclosure [Abstract]

Activity Related to Asset Retirement Obligations

Activity related to the Company’s asset retirement obligations is as follows:

(In thousands)	Three Months Ended   March 31, 2019
Balance at beginning of period(1)	$	51,622
Liabilities incurred	2,350
Liabilities settled	(79		)
Liabilities divested	(187		)
Accretion expense	995
Balance at end of period(1)	$	54,701

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(1) Includes $1.0 million of current asset retirement obligations included in accrued liabilities at March 31, 2019 and December 31, 2018.