|**Asset Retirement Obligations Asset Retirement Obligations (Tables)** | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
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|**Asset Retirement Obligation Disclosure [Abstract]**                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Schedule of Change in Asset Retirement Obligation [Table Text Block]   | The following table presents the changes in carrying amounts of the asset retirement obligations associated with our working interests in crude oil and natural gas properties for the periods presented:Year Ended December 31,20222021(in thousands)Beginning balance$159,672$166,570Obligations incurred with development activities and other5,3324,750Obligations incurred with acquisition25,300—Accretion expense13,40812,086Revisions in estimated cash flows19,60610,609Obligations discharged with asset retirements and divestitures(25,667)(34,343)Asset retirement obligations at end of period197,651159,672Current portion(1)(25,986)(32,146)Long-term portion$171,665$127,526
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|                                                                       | Year Ended December 31,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|                                                                       | 2022                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                                                                       | (in thousands)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Beginning balance                                                      | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Obligations incurred with development activities and other             | 5,332                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Obligations incurred with acquisition                                  | 25,300                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Accretion expense                                                      | 13,408                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Revisions in estimated cash flows                                      | 19,606                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Obligations discharged with asset retirements and divestitures         | (25,667)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Asset retirement obligations at end of period                          | 197,651                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
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|Current portion(1)                                                     | (25,986)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Long-term portion                                                      | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

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+ ReferencesReference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849
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