Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2020

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Changes in Asset Retirement Obligations

Changes in the asset retirement obligations (in thousands) during the three months ended March 31, 2020 and 2019 are as follows:

	Three Months Ended   March 31,
	2020			2019
Beginning balance	$	25,825		$	18,413
Accretion	373			373
Additions and revisions of estimates	(890		)	—
Ending balance	$	25,308		$	18,786