Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2019

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Activity in Asset Retirement Obligations

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

	2019		2018
Balance as of January 1, 2019	$	2,587	$	2,507
Additions	281		16
Revision in estimate	7,205		—
Disposals	(124)		(148)
Expenditures	(671)		—
Accretion of discount	1,051		212
Balance as of December 31, 2019	$	10,329	$	2,587

Schedule of Contractual Obligation Maturity

The following table outlines our contractual obligations as of December 31, 2019 (in thousands):

	Retirement obligation
2020	$	1,285
2021	172
2022	146
2023	341
Thereafter	8,385
Total asset retirement obligations	$	10,329