Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2019

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Activity in Asset Retirement Obligations

The following table presents activity in our AROs (in thousands):

	Nine Months Ended September 30,
	2019
Balance as of January 1, 2019	$	2,587
Additions	280
Revision in estimate	6,140
Disposals	(124)
Expenditures	(159)
Accretion expense	607
Balance as of September 30, 2019	$	9,331