|**Common Stock Common Stock (Tables)**                                                                   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
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|**Share-based Compensation Arrangement by Share-based Payment Award [Line Items]**                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Share-based Payment Arrangement, Cost by Plan [Table Text Block]                                         | The following table provides a summary of the impact of our outstanding stock-based compensation plans on the results of operations for the periods presented:Year Ended December 31,202220212020(in thousands)General and administrative expense$25,257$21,830$21,182Lease operating expense1,5891,1931,018Total stock-based compensation expense$26,846$23,023$22,200                                                                                                                                                                                                  
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|General and administrative expense                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Lease operating expense                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Total stock-based compensation expense                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] | The following table presents the changes in non-vested time-based RSUs to eligible employees, including executive officers, during the year ended December 31, 2022:SharesWeighted Average Grant-Date Fair Value per ShareNon-vested at beginning of period1,165,187$25.33Granted363,39570.01Vested(581,343)26.15Forfeited(50,728)40.58Non-vested at end of period896,51142.05                                                                                                                                                                                           
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|                                                                                                         | Shares                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Non-vested at beginning of period                                                                        | 1,165,187                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Granted                                                                                                  | 363,395                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Vested                                                                                                   | (581,343)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Forfeited                                                                                                | (50,728)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Non-vested at end of period                                                                              | 896,511                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Restricted Stock Awards, Market-Based, Valuation assumptions [Table Text Block]                          | Year Ended December 31,202220212020Expected term of award (in years)2.93.03.0Risk-free interest rate1.7%0.2%1.4%Expected volatility86.3%84.6%46.6%Weighted average grant-date fair value per share$107.85$54.01$33.52                                                                                                                                                                                                                                                                                                                                                    
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|Expected term of award (in years)                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Risk-free interest rate                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Expected volatility                                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Weighted average grant-date fair value per share                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Schedule of Nonvested Performance-based Units Activity [Table Text Block]                                | The following table presents the change in non-vested market-based awards during the year ended December 31, 2022:SharesWeighted Average Grant-Date Fair Value per ShareNon-vested at December 31, 2021439,229$43.21Granted102,098107.85Granted for performance multiple(1)347,36333.52Vested(578,937)33.52Non-vested at December 31, 2022309,75371.76_______________(1)Upon completion of the performance period for the PSUs granted in 2020, a performance multiple of 250% was applied to each of the grants resulting in additional grants of PSUs in December 2022.
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|Non-vested at December 31, 2021                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Granted                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Granted for performance multiple(1)                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Vested                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Non-vested at December 31, 2022                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

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