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Acquisitions and Divestitures (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]    
Proved oil and gas properties carrying amount $ 46,000 $ 304,000
Gains (Losses) on Asset Dispositions, Net 29,693 4,173
Proceeds on Asset Dispositions $ 43,368 $ 17,642