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Revenue Recognition (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers $ 174,278 $ 101,313 $ 476,885 $ 305,069
(Losses) gains on oil and gas sales derivatives (30,864) (11,564) (140,021) 157,398
Total revenues and other 143,414 89,749 336,864 462,467
Oil sales        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 152,536 88,453 416,204 274,275
Natural gas sales        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 6,922 3,347 24,414 9,549
Natural gas liquids sales        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 1,600 439 3,480 1,028
Electricity sales        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 12,371 8,744 29,328 19,089
Marketing revenues        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 732 330 3,087 1,075
Other revenues        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers $ 117 $ 0 $ 372 $ 53