Note 15 - Income Taxes (Details Textual) - USD ($) Pure in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Income Tax Expense (Benefit)	$ 0	$ 0
United States, Hong Kong, and Nigeria [Member]
Income Tax Expense (Benefit)	$ 0	$ 0
Effective Income Tax Rate Reconciliation, Percent	0.00%
SPAIN
Income Tax Expense (Benefit)	$ 0

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details