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Supplemental Information on Oil and Natural Gas Producing Activities (Unaudited) - Narrative (Details)
 12 Months Ended
Dec. 31, 2021
MBoe
Dec. 31, 2020
MBoe
Dec. 31, 2019
MBoe
Dec. 31, 2018
MBoe
Extractive Industries [Abstract]        
Percentage of proved reserves estimates prepared by external engineers 0.96 0.90 0.90  
Percentage of proved reserves estimates prepared internally 4.00%      
Proved developed and undeveloped reserves (MBoe) 71,285 36,879 89,885 160,176
Decrease due to change in accounting (MBoe) 27,300 45,000 50,900  
Decrease due to change in accounting, PUD 13,600 27,800 39,800  
Revision from well reactivation program (3,700)      
Decrease due to change in accounting, Remaining Proved Reserves 1,400 17,300 11,100  
Revision of previous estimates due to changes in commodity pricing (MBoe) 6,800   10,900  
Revision of previous estimates due to changes in well performance (MBoe) 3,600   3,200  
Production (MBoe) 6,793 8,703 11,956  
Improved recovery (MBoe)   8,600 12,600  
Revision of previous estimates (MBoe) 43,340 (44,800) (58,514)  
Acquisitions of new reserves (MBoe) 1,446 1,076 0  
Attributable to well shut-ins and other revisions 1,200 (9,000)