Derivatives (Summary Of Derivative Instruments Contracts) (Details)	Mar. 31, 2024 MMBTU $ / MMBTU $ / bbl bbl
Natural Gas Costless Collars [Member] | 2024 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	795,000
Natural Gas Costless Collars [Member] | 2024 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price	3.27
Natural Gas Costless Collars [Member] | 2024 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price	4.65
Natural Gas Costless Collars [Member] | 2025 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	1,220,000
Natural Gas Costless Collars [Member] | 2025 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price	3.24
Natural Gas Costless Collars [Member] | 2025 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price	4.67
Natural Gas Costless Collars [Member] | 2026 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	525,000
Natural Gas Costless Collars [Member] | 2026 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price	3.5
Natural Gas Costless Collars [Member] | 2026 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price	4.79
Natural Gas Fixed Price Swaps [Member] | 2024 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	1,825,000
Contract average price	3.35
Natural Gas Fixed Price Swaps [Member] | 2025 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	1,030,000
Contract average price	3.47
Oil Costless Collars [Member] | 2024 [Member]
Derivative [Line Items]
Contract total volume | bbl	20,100
Oil Costless Collars [Member] | 2024 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	64.97
Oil Costless Collars [Member] | 2024 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	76.53
Oil Fixed Price Swaps [Member] | 2024 [Member]
Derivative [Line Items]
Contract average price | $ / bbl	68.18
Contract total volume | bbl	24,850
Oil Fixed Price Swaps [Member] | 2025 [Member]
Derivative [Line Items]
Contract average price | $ / bbl	69.04
Contract total volume | bbl	34,050