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Note 3 - Acquisition and Dispositions - Unaudited Proforma Results (Details) - Etame Marine Block [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2021
Crude oil and natural gas sales |  | $ 47,023 | $ 104,570
Operating income |  | 18,874 | 43,899
Net income | [1] | $ 5,884 | $ 17,620
Income from continuing operations (in dollars per share) |  | $ 0.10 | $ 0.30
Net income per share (in dollars per share) |  | $ 0.10 | $ 0.30
Basic weighted average shares outstanding (in shares) |  | 58,072 | 57,855
Income from continuing operations (in dollars per share) |  | $ 0.10 | $ 0.30
Net income per share (in dollars per share) |  | $ 0.10 | $ 0.30
Diluted weighted average shares outstanding (in shares) |  | 58,574 | 58,527
[1] | The pro forma net loss for the six months ended June 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.

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