Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Acquisitions and Dispositions (Pro Forma Results of Acquisition) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Business Acquisition [Line Items]        
Basic weighted average shares outstanding 58,586 57,456 58,102 57,628
Diluted weighted average shares outstanding 58,916 57,741 58,654 57,628
Sasol Gabon S.A. [Member]        
Business Acquisition [Line Items]        
Crude oil and natural gas sales $ 55,899 $ 34,568 $ 160,469 $ 103,422
Operating income (loss) 20,030 7,750 63,929 (12,481)
Net income (loss) $ 31,721 [1] $ 9,136 $ 49,341 [1] $ (36,316)
Income (loss) from continuing operations $ 0.53 $ 0.16 $ 0.85 $ (0.63)
Loss from discontinued operations, net of tax 0.00 0.00 0.00 0.00
Net income (loss) per share $ 0.53 $ 0.16 $ 0.85 $ (0.63)
Basic weighted average shares outstanding 58,586 57,456 58,102 57,628
Income (loss) from continuing operations $ 0.53 $ 0.16 $ 0.84 $ (0.63)
Loss from discontinued operations, net of tax 0.00 0.00 0.00 0.00
Net income (loss) per share $ 0.53 $ 0.16 $ 0.84 $ (0.63)
Diluted weighted average shares outstanding 58,916 57,741 58,654 57,628
Sasol Gabon S.A. [Member] | Bargain Purchase Gain [Member]        
Business Acquisition [Line Items]        
Net income (loss)     $ (7,700) $ (7,700)
Sasol Gabon S.A. [Member] | Acquisition-related Costs [Member]        
Business Acquisition [Line Items]        
Net income (loss)     $ (1,000) $ (1,000)
[1] The pro forma net income for the nine months ended September 30, 2021 excludes nonrecurring pro forma adjustments directly attributable to the Sasol Acquisition, consisting of a bargain purchase gain of $7.7 million and transaction costs of $1.0 million.