Note 4 - Acquisition and Dispositions - Unaudited Proforma Results (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
12 Months Ended | |||||||||||||||||
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Dec. 31, 2022 |
Dec. 31, 2021 |
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Diluted net income per share: (in dollars per share) | $ 1.2 | $ 0.5 | ||||||||||||||||
Cumulative Effect, Period of Adoption, Adjustment [Member] | ||||||||||||||||||
Diluted net income per share: (in dollars per share) | [1] | 0.01 | (0.01) | |||||||||||||||
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | ||||||||||||||||||
Diluted net income per share: (in dollars per share) | 1.21 | 0.49 | ||||||||||||||||
Etame Marine Block [Member] | ||||||||||||||||||
Crude oil, natural gas and natural gas liquids sales (in dollars per share) | [2] | $ 547,670 | $ 367,210 | |||||||||||||||
Operating income | $ 267,582 | [3] | $ 104,924 | [4] | ||||||||||||||
Net income | $ 130,425 | [5] | $ 54,534 | [6],[7] | ||||||||||||||
Basic net income per share: (in dollars per share) | $ 1.21 | $ 0.51 | ||||||||||||||||
Basic weighted average shares outstanding (in shares) | 108,206 | 107,537 | ||||||||||||||||
Diluted weighted average shares outstanding (in shares) | 108,642 | 108,062 | ||||||||||||||||
Etame Marine Block [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ||||||||||||||||||
Crude oil, natural gas and natural gas liquids sales (in dollars per share) | $ 0 | $ 0 | ||||||||||||||||
Operating income | $ 0 | $ 0 | ||||||||||||||||
Net income | [1] | $ 1,412 | $ (1,412) | |||||||||||||||
Basic net income per share: (in dollars per share) | [1] | $ 0.01 | $ (0.02) | |||||||||||||||
Basic weighted average shares outstanding (in shares) | 108,206 | 107,537 | ||||||||||||||||
Diluted weighted average shares outstanding (in shares) | 108,642 | 108,062 | ||||||||||||||||
Etame Marine Block [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | ||||||||||||||||||
Crude oil, natural gas and natural gas liquids sales (in dollars per share) | [2] | $ 547,670 | $ 367,210 | |||||||||||||||
Operating income | [4] | $ 267,582 | $ 104,924 | |||||||||||||||
Net income | $ 131,837 | [5] | $ 53,122 | [6],[7] | ||||||||||||||
Basic net income per share: (in dollars per share) | $ 1.22 | $ 0.49 | ||||||||||||||||
Basic weighted average shares outstanding (in shares) | 108,206 | 107,537 | ||||||||||||||||
Diluted weighted average shares outstanding (in shares) | 108,642 | 108,062 | ||||||||||||||||
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