Derivatives (Summary Of Derivative Instruments Contracts) (Details)	Dec. 31, 2022 MMBTU $ / bbl $ / MMBTU bbl
Natural Gas Costless Collars [Member] | 2023 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	1,170,000
Natural Gas Costless Collars [Member] | 2023 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price | $ / MMBTU	4.01
Natural Gas Costless Collars [Member] | 2023 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price | $ / MMBTU	7.82
Natural Gas Costless Collars [Member] | 2024 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	665,000
Natural Gas Costless Collars [Member] | 2024 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price | $ / MMBTU	4.09
Natural Gas Costless Collars [Member] | 2024 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price | $ / MMBTU	6.58
Natural Gas Fixed Price Swaps [Member] | 2023 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	1,780,000
Contract average price | $ / MMBTU	3.37
Oil Costless Collars | 2023 [Member]
Derivative [Line Items]
Contract total volume | bbl	15,000
Oil Costless Collars | 2023 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	75.00
Oil Costless Collars | 2023 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	96.00
Oil Costless Collars | 2024 [Member]
Derivative [Line Items]
Contract total volume | bbl	10,400
Oil Costless Collars | 2024 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	63.00
Oil Costless Collars | 2024 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	76.00
Oil Fixed Price Swaps [Member] | 2023 [Member]
Derivative [Line Items]
Contract average price | $ / bbl	74.02
Contract total volume | bbl	57,000