Financial Instruments and Risk Management (Crude Oil Derivative Contracts) (Details) barrels_per_day in Thousands	9 Months Ended
	Sep. 30, 2022 barrels_per_day $ / bbl
Commodity derivative contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Daily production (in barrels per day) | barrels_per_day	20
Average forward price (in dollars per barrel)	44.88
Commodity collars
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Daily production (in barrels per day) | barrels_per_day	25
Commodity collars | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Average forward price (in dollars per barrel)	75.20
Commodity collars | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Average forward price (in dollars per barrel)	63.24