Annual report pursuant to Section 13 and 15(d)

Supplemental Information on Oil and Natural Gas Properties (Unaudited) - Narrative (Details)

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Supplemental Information on Oil and Natural Gas Properties (Unaudited) - Narrative (Details) - Boe
Boe in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Reserve Quantities [Line Items]      
Proved developed and undeveloped reserve period increase (decrease) 8,700 (64,100) 301,500
Extensions and discoveries 36,180 41,407 59,424
Revisions to previous estimates   (52,227) (37,216)
Decrease in average realized price (percent)   (31.00%)  
Sale of reserves in place 36,015 16,120 32,456
Production (34,894) (37,193) (15,086)
Purchase of reserves in place 57,652 0 326,838
Computation of proved reserves, discount factor as percent 10.00%    
Divestiture, Ranger      
Reserve Quantities [Line Items]      
Sale of reserves in place     27,100
Price Revisions      
Reserve Quantities [Line Items]      
Revisions to previous estimates 27,900 (26,200) (5,700)
Uneconomic Proved Developed Reserves      
Reserve Quantities [Line Items]      
Revisions to previous estimates   (2,100)  
Uneconomic Proved Undeveloped Reserves      
Reserve Quantities [Line Items]      
Revisions to previous estimates   (800)  
Revisions due to changes in expected recovery timeframe      
Reserve Quantities [Line Items]      
Revisions to previous estimates (13,100) (24,200)  
Development Plan Revisions      
Reserve Quantities [Line Items]      
Revisions to previous estimates (29,000) (24,000) (9,800)
Revisions due to NGL separation from Gas      
Reserve Quantities [Line Items]      
Revisions to previous estimates   14,700  
Revisions due to changes in operational expenses      
Reserve Quantities [Line Items]      
Revisions to previous estimates   7,500  
Revisions due to well spacing      
Reserve Quantities [Line Items]      
Revisions to previous estimates     (21,700)
Proved Developed Reserves      
Reserve Quantities [Line Items]      
Extensions and discoveries 10,100 11,700 17,100
Permian Basin      
Reserve Quantities [Line Items]      
Revisions to previous estimates (14,181) 52,200