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Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2019
Asset Retirement Obligation [Abstract]  
Schedule of Asset Retirement Obligations
Changes in the carrying amounts of the Company’s AROs for the years ended December 31, 2019 and 2018 are shown below:
(In thousands)
2019
2018
Balance at beginning of year
$
12,543

$
12,167

Liabilities assumed in acquisitions
1,416

—

Liabilities settled
(102
)
(758
)
Liabilities incurred
546

884

Accretion expense
75

510

Revision of estimate
(538
)
(260
)
Balance at end of year
$
13,940

$
12,543