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Asset Retirement Obligations (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]  
Asset retirement obligations, beginning of period $ 16,874
Liabilities incurred and acquired 630
Liabilities divested and settled (306)
Accretion expense 831
Asset Retirement Obligation, Revision of Estimate (96)
Asset retirement obligations, end of period $ 18,125