Derivatives (Summary Of Derivative Instruments Contracts) (Details)	Sep. 30, 2024 MMBTU $ / bbl $ / MMBTU bbl
Natural Gas Costless Collars [Member] | 2024 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	415,000
Natural Gas Costless Collars [Member] | 2024 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price	3.19
Natural Gas Costless Collars [Member] | 2024 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price	4.84
Natural Gas Costless Collars [Member] | 2025 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	1,440,000
Natural Gas Costless Collars [Member] | 2025 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price	3.25
Natural Gas Costless Collars [Member] | 2025 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price	4.59
Natural Gas Costless Collars [Member] | 2026 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	570,000
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	4.82
Natural Gas Fixed Price Swaps [Member] | 2024 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	470,000
Contract average price	3.55
Natural Gas Fixed Price Swaps [Member] | 2025 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	2,150,000
Contract average price	3.26
Natural Gas Fixed Price Swaps [Member] | 2026 [Member]
Derivative [Line Items]
Contract total volume | MMBTU	150,000
Contract average price	3.1
Oil Costless Collars [Member] | 2024 [Member]
Derivative [Line Items]
Contract total volume | bbl	5,300
Oil Costless Collars [Member] | 2024 [Member] | Minimum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	66.04
Oil Costless Collars [Member] | 2024 [Member] | Maximum [Member]
Derivative [Line Items]
Contract average price | $ / bbl	76.79
Oil Fixed Price Swaps [Member] | 2024 [Member]
Derivative [Line Items]
Contract average price | $ / bbl	68.84
Contract total volume | bbl	17,200
Oil Fixed Price Swaps [Member] | 2025 [Member]
Derivative [Line Items]
Contract average price | $ / bbl	69.44
Contract total volume | bbl	57,800
Oil Fixed Price Swaps [Member] | 2026 [Member]
Derivative [Line Items]
Contract average price | $ / bbl	69.53
Contract total volume | bbl	12,000