Note 8 - Income Taxes - Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2023 USD ($)
UNITED STATES
Net operating losses	$ 0
GABON
Net operating losses	0
EGYPT
Net operating losses	16,000
CANADA
Net operating losses	85,407
EQUATORIAL GUINEA
Net operating losses	12,313
UNITED KINGDOM
Net operating losses	$ 7,222