Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities (Schedule of Outstanding Oil and Natural Gas Derivative Contracts) (Details)

v3.20.2
Derivative Instruments and Hedging Activities (Schedule of Outstanding Oil and Natural Gas Derivative Contracts) (Details) - Forecast - Not Designated as Hedging Instrument
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2022
bbl
Dec. 31, 2020
MMBTU
$ / bbl
$ / MMBTU
bbl
Dec. 31, 2020
$ / bbl
$ / MMBTU
bbl
Dec. 31, 2021
MMBTU
$ / MMBTU
$ / bbl
bbl
Commodity - Oil | Call option | Short        
Derivative [Line Items]        
Total volume (Bbls) | bbl   920,000   4,825,300
Weighted average price (in dollars per share)   55.00 55.00 63.62
Commodity - Oil | Call option | Long        
Derivative [Line Items]        
Total volume (Bbls) | bbl 0   920,000  
Weighted average price (in dollars per share) | $ / bbl   67.50 67.50 0
Commodity - Oil | Put option | Short        
Derivative [Line Items]        
Total volume (Bbls) | bbl 0   1,104,000  
Weighted average price (in dollars per share) | $ / bbl   42.50 42.50 0
Commodity - Oil | Collar Contracts        
Derivative [Line Items]        
Total volume (Bbls) | bbl 0   2,863,040  
Commodity - Oil | Collar Contracts | Call option | Short        
Derivative [Line Items]        
Weighted average price (in dollars per share) | $ / bbl   45.00 45.00 0
Commodity - Oil | Collar Contracts | Put option | Long        
Derivative [Line Items]        
Weighted average price (in dollars per share) | $ / bbl   35.00 35.00 0
Commodity - Oil | Swap contracts        
Derivative [Line Items]        
Total volume (Bbls) | bbl   6,291,880   0
Weighted average price (in dollars per share)   42.08 42.08 0
Commodity - Oil | Swap contracts | Oil contracts (WTI Calendar Month Average Roll)        
Derivative [Line Items]        
Total volume (Bbls) | bbl   3,864,000   0
Weighted average price (in dollars per share)   (2.75) (2.75) 0
Commodity - Oil | Swap contracts | Oil contracts (Brent ICE)        
Derivative [Line Items]        
Total volume (Bbls) | bbl   184,000   1,272,450
Weighted average price (in dollars per share) | $ / bbl   46.15 46.15 38.24
Commodity - Oil | Swap contracts | Oil contracts (Midland basis differential)        
Derivative [Line Items]        
Total volume (Bbls) | bbl   4,609,200   4,015,100
Weighted average price (in dollars per share) | $ / bbl       0.40
Weighted average price (in dollars per share) | $ / bbl   (0.98) (0.98)  
Commodity - Oil | Swap contracts | Oil contracts (Argus Houston MEH basis differential)        
Derivative [Line Items]        
Total volume (Bbls) | bbl   3,256,004   0
Weighted average price (in dollars per share)   0.06 0.06 0
Commodity - Oil | Swap contracts | Oil contracts (Argus Houston MEH swaps)        
Derivative [Line Items]        
Total volume (Bbls) | bbl   368,000   2,969,050
Weighted average price (in dollars per share)   57.71 57.71 39.48
Commodity - Natural gas | Call option | Short        
Derivative [Line Items]        
Weighted average price (in dollars per share)   3.50 3.50 3.09
Total volume (MMBtu) | MMBTU   6,072,000   7,300,000
Commodity - Natural gas | Collar contracts (three-way collars)        
Derivative [Line Items]        
Total volume (MMBtu) | MMBTU   2,755,000   1,350,000
Commodity - Natural gas | Collar contracts (three-way collars) | Call option | Short        
Derivative [Line Items]        
Weighted average price (in dollars per share)   2.73 2.73 2.70
Commodity - Natural gas | Collar contracts (three-way collars) | Put option | Short        
Derivative [Line Items]        
Weighted average price (in dollars per share)   2.00 2.00 2.00
Commodity - Natural gas | Collar contracts (three-way collars) | Put option | Long        
Derivative [Line Items]        
Weighted average price (in dollars per share)   2.47 2.47 2.42
Commodity - Natural gas | Collar contracts (two-way collars)        
Derivative [Line Items]        
Total volume (MMBtu) | MMBTU   1,525,000   7,750,000
Commodity - Natural gas | Collar contracts (two-way collars) | Call option | Short        
Derivative [Line Items]        
Weighted average price (in dollars per share)   3.25 3.25 2.93
Commodity - Natural gas | Collar contracts (two-way collars) | Put option | Long        
Derivative [Line Items]        
Weighted average price (in dollars per share)   2.67 2.67 2.55
Commodity - Natural gas | Swap contracts        
Derivative [Line Items]        
Weighted average price (in dollars per share)   2.21 2.21 2.66
Total volume (MMBtu) | MMBTU   5,530,000   12,923,000
Commodity - Natural gas | Swap contracts | Waha Basis Differential        
Derivative [Line Items]        
Total volume (MMBtu) | MMBTU   12,885,000   0
Weighted average price (in dollars per share)   (0.92) (0.92) 0
Commodity - Natural gas liquids | Swap contracts | NGL contracts (OPIS Mont Belvieu Purity Ethane)        
Derivative [Line Items]        
Total volume (Bbls) | bbl   0   1,825,000
Weighted average price (in dollars per share)   0 0 7.62