Derivatives (Summary Of Derivative Instruments Contracts) (Details)	Dec. 31, 2023 MMBTU $ / MMBTU $ / bbl bbl
Natural Gas Costless Collars [Member] | 2024
Derivative [Line Items]
Contract total volume | MMBTU	1,455,000
Natural Gas Costless Collars [Member] | 2025
Derivative [Line Items]
Contract total volume | MMBTU	540,000
Natural Gas Fixed Price Swaps [Member] | 2024
Derivative [Line Items]
Contract total volume | MMBTU	2,172,500
Contract average price	3.4
Natural Gas Fixed Price Swaps [Member] | 2025
Derivative [Line Items]
Contract total volume | MMBTU	180,000
Contract average price	4.16
Oil Costless Collars [Member] | 2024
Derivative [Line Items]
Contract total volume | bbl	23,450
Oil Fixed Price Swaps [Member] | Remaining 2023
Derivative [Line Items]
Contract average price | $ / bbl	74.48
Contract total volume | bbl	5,500
Oil Fixed Price Swaps [Member] | 2024
Derivative [Line Items]
Contract average price | $ / bbl	67.69
Contract total volume | bbl	16,350
Oil Fixed Price Swaps [Member] | 2025
Derivative [Line Items]
Contract average price | $ / bbl	66.03
Contract total volume | bbl	7,800
Maximum [Member] | Natural Gas Costless Collars [Member] | 2024
Derivative [Line Items]
Contract average price	5.58
Maximum [Member] | Natural Gas Costless Collars [Member] | 2025
Derivative [Line Items]
Contract average price	5.15
Maximum [Member] | Oil Costless Collars [Member] | 2024
Derivative [Line Items]
Contract average price | $ / bbl	76.28
Minimum [Member] | Natural Gas Costless Collars [Member] | 2024
Derivative [Line Items]
Contract average price	3.57
Minimum [Member] | Natural Gas Costless Collars [Member] | 2025
Derivative [Line Items]
Contract average price	3.21
Minimum [Member] | Oil Costless Collars [Member] | 2024
Derivative [Line Items]
Contract average price | $ / bbl	64.11