Quarterly report pursuant to Section 13 or 15(d)

Acquisitions and Dispositions (Pro Forma Results of Acquisition) (Details)

v3.22.1
Acquisitions and Dispositions (Pro Forma Results of Acquisition) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Business Acquisition [Line Items]    
Basic weighted average shares outstanding 58,702 57,636
Diluted weighted average shares outstanding 59,179 58,461
Sasol Gabon S.A. [Member]    
Business Acquisition [Line Items]    
Crude oil and natural gas sales   $ 57,547
Operating income   25,025
Net income   $ 11,736
Income from continuing operations   $ 0.20
Net income per share   $ 0.20
Basic weighted average shares outstanding   57,636
Income from continuing operations   $ 0.20
Net income (loss) per share   $ 0.20
Diluted weighted average shares outstanding   58,461
Sasol Gabon S.A. [Member] | Bargain Purchase Gain [Member]    
Business Acquisition [Line Items]    
Net income (loss)   $ 7,700
Sasol Gabon S.A. [Member] | Acquisition-related Costs [Member]    
Business Acquisition [Line Items]    
Net income (loss)   $ 1,000