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Impairment of Natural Gas and Crude Oil Properties (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Wells
Jun. 30, 2019
USD ($)
Impairment of natural gas and crude oil properties [Line Items]        
Oil and Gas, Exploratory Well Drilled, Net Productive, Number | Wells     2  
Delaware Basin Proved Property Impairment     $ 753,000  
Delaware Basin Unproved Property Impairment     127,300  
Results of Operations, Impairment of Oil and Gas Properties $ 32 $ 28,979 $ 881,106 $ 36,854
Delaware Basin Assets [Member]        
Impairment of natural gas and crude oil properties [Line Items]        
Results of Operations, Impairment of Oil and Gas Properties $ 881,100      
Impairment of Leasehold   $ 2,200   10,100
Midstream Asset Divestitures [Member]        
Impairment of natural gas and crude oil properties [Line Items]        
Impairment related to midstream facility infrastructure       $ 26,800