Derivative Financial Instruments (Schedule Of Open Oil Derivative Positions) (Details)	3 Months Ended
	Mar. 31, 2023 $ / bbl bbl
NYMEX West Texas Intermediate Price Collars Oil Q2-Q4 2023 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d) | bbl	83,329
Weighted Average Floor Price	69.48
Weighted Average Ceiling Price	94.66
NYMEX West Texas Intermediate Price Collars Oil Q1 Q4 2024 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d) | bbl	7,486
Weighted Average Floor Price	60.00
Weighted Average Ceiling Price	86.17
Midland Sweet Q2 Q4 2023
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d) | bbl	50,091
Oil Basis Swaps	1.09
Midland Sweet Q1 Q4 2024 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d) | bbl	48,500
Oil Basis Swaps	1.19
Midland Sweet Q1 Q4 2025 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d) | bbl	36,000
Oil Basis Swaps	0.94