Asset Retirement Obligations Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2019

Asset Retirement Obligation Disclosure [Abstract]

Roll-forward of our asset retirement obligations

The following provides a roll-forward of our asset retirement obligations for the year ended December 31, 2018 and the six months ended June 30, 2019 (in thousands):

Asset Retirement Obligations as of December 31, 2017	$	10,787
Accretion expense	419
Liabilities incurred for new wells and facilities construction	93
Reductions due to sold wells and facilities	(6,298		)
Reductions due to plugged wells and facilities	(180		)
Revisions in estimates	(562		)
Asset Retirement Obligations as of December 31, 2018	$	4,259
Accretion expense	168
Liabilities incurred for new wells and facilities construction	102
Reductions due to sold wells and facilities	—
Reductions due to plugged wells and facilities	(47		)
Revisions in estimates	7
Asset Retirement Obligations as of June 30, 2019	$	4,489