Annual report pursuant to Section 13 and 15(d)

Asset Retirement Obligations (Details)

v3.20.4
Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Asset retirement obligations at beginning of period $ 49,733 $ 14,292
Accretion expense 3,323 945
Liabilities incurred 3,895 615
Increase due to acquisition of oil and gas properties 0 26,107
Liabilities settled (2,220) (3,394)
Dispositions (351) (1,776)
Revisions to estimates 4,710 12,944
Asset retirement obligations, end of period 59,090 49,733
Less: Current asset retirement obligations (1,881) (873)
Long-term asset retirement obligations 57,209 48,860
Restricted Investments    
Restricted investments $ 3,500 $ 3,500