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Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2020
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligations

The following is a reconciliation of the changes in the Company’s liabilities for asset retirement obligations for the years ended December 31, 2020 and 2019:

 

    Year Ended December 31,  
    2020     2019  
    (in thousands)  
Balance, beginning of year   $ 819     $ 939  
Accretion     43       22  
Sold/Plugged     (12 )     (130 )
Acquired     558       2  
Revisions     -       (14 )
Liabilities incurred     -       -  
Balance, end of year   $ 1,408     $ 819