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Oil and Gas Properties - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
$ / Boe
Dec. 31, 2018
USD ($)
$ / Boe
Dec. 31, 2017
USD ($)
$ / Boe
Extractive Industries [Abstract]      
Depletion expense $ 30.4 $ 13.3 $ 6.2
Full cost pool depletion per barrel of oil equivalent | $ / Boe 11.22 9.38 7.25
Capitalized costs $ 7.4 $ 2.7 $ 2.1