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Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2020
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, 2020 and 2019 are shown below:
(In thousands)
20202019
Balance at beginning of year$13,940 $12,543 
Liabilities assumed in acquisitions— 1,416 
Liabilities settled— (102)
Liabilities incurred218 546 
Accretion expense216 75 
Revision of estimate126 (538)
Balance at end of year$14,500 $13,940