Quarterly report pursuant to Section 13 or 15(d)

Asset Retirement Obligations (Tables)

v3.10.0.1
Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2018
Asset Retirement Obligation [Abstract]  
Summary of Activity of Asset Retirement Obligations
The table below summarizes the activity for the Company’s asset retirement obligations:

Six Months Ended

June 30, 2018
Asset retirement obligations at January 1, 2018
$
6,020

Accretion expense
424

Liabilities incurred
99

Liabilities settled
(207
)
Sales
(611
)
Revisions to estimate (a)
4,341

Asset retirement obligations at end of period
10,066

Less: Current asset retirement obligations
(2,284
)
Long-term asset retirement obligations at June 30, 2018
$
7,782


(a)
Revisions to estimated ARO obligations can result from changes in retirement cost estimates, revisions to estimated inflation rates and changes in the estimated timing of abandonment.