Revenue Recognition (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 481,366	$ 300,661	$ 892,975	$ 551,460
Oil sales
Disaggregation of Revenue [Line Items]
Revenues	446,592	280,577	827,834	513,621
Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues	5,378	2,131	9,047	4,532
CO2 sales and transportation fees
Disaggregation of Revenue [Line Items]
Revenues	12,610	10,134	26,032	19,362
Oil marketing revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 16,786	$ 7,819	$ 30,062	$ 13,945