Note 8 - Income Taxes - Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2022 USD ($)
UNITED STATES
Net operating losses	$ 45,498
GABON
Net operating losses	37,983
EGYPT
Net operating losses	14,558
CANADA
Net operating losses	$ 130,542

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319

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