Note 5 - Income Taxes - Cash Paid for Income Taxes (Details) $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($)
U.S. Federal	$ 340
U.S. State and Local	14
Total cash taxes paid, net	60,310
General Tax Administration of Angola [Member]
Foreign jurisdictions	7,997
Secretariat of the Federal Revenue Bureau of Brazil [Member]
Foreign jurisdictions	8,620
Republic of Congo Ministry of Finance, Budget and Public Portfolio [Member]
Foreign jurisdictions	3,469
General Directorate of Taxes of Gabon [Member]
Foreign jurisdictions	5,588
Guyana Revenue Authority [Member]
Foreign jurisdictions	4,222
Namibia Revenue Agency [Member]
Foreign jurisdictions	9,109
Zakat, Tax and Customs Authority [Member]
Foreign jurisdictions	4,010
Other Foreign Jurisdictions [Member]
Foreign jurisdictions	$ 16,941

Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income.

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