Quarterly report pursuant to Section 13 or 15(d)

Acquisitions and Dispositions (Narrative) (Details)

v3.22.1
Acquisitions and Dispositions (Narrative) (Details)
$ in Thousands
 1 Months Ended 3 Months Ended
Feb. 25, 2021
USD ($)
Nov. 30, 2006
Mar. 31, 2022
$ / bbl
Mar. 31, 2021
USD ($)
Apr. 29, 2021
USD ($)
Feb. 24, 2021
Business Acquisition [Line Items]            
Bargain purchase gain       $ 7,651    
Sasol Gabon S.A. [Member]            
Business Acquisition [Line Items]            
Bargain purchase gain $ 7,700          
Bargain purchase gain, net of tax 5,500          
Bargain purchase gain, income tax benefit 2,200          
Contingent consideration $ 5,000       $ 5,000  
Contingent consideration, measurement period of oil price     90 days      
Contingent consideration, oil price threshold | $ / bbl     60.00      
Discontinued Operations [Member] | Joint Operating With Republic Of Angola [Member]            
Business Acquisition [Line Items]            
Joint operation agreement related to third party in working interest percentage   40.00%        
Additional joint operation agreement related to third party in working interest percentage   10.00%        
Etame Marine Block [Member]            
Business Acquisition [Line Items]            
Working interest ownership, percentage 58.80%         31.10%
Etame Marine Block [Member] | Sasol Gabon S.A. [Member]            
Business Acquisition [Line Items]            
Increase (decrease) in working interest ownership percentage 27.80%