Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2019

Asset Retirement Obligation Disclosure [Abstract]

Summary of Changes in Asset Retirement Obligations

The Company’s asset retirement obligations primarily relate to the Company’s portion of future plugging and abandonment costs for wells and related facilities. The following table presents the changes in the asset retirement obligations for the nine months ended September 30, 2019 (in thousands):

Asset retirement obligations at beginning of period	$	76,344
Liabilities added from acquisition or drilling		9,477
Liabilities settled		(259	)
Accretion expense		4,071
Revision of estimates		(52	)
Asset retirement obligation at end of period		89,581
Less: Current portion		(477	)
Asset retirement obligations - long-term portion	$	89,104