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Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Asset retirement obligations, beginning of period $ 17,009 $ 16,874
Liabilities incurred 194 589
Liabilities on acquired properties 0 147
Liabilities settled (1,226) (578)
Accretion expense 1,208 1,128
Revision to estimated cash flows 55 (1,151)
Asset retirement obligations, end of period $ 17,240 $ 17,009