Note 16 - Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Loss before income taxes	$ (9,752)	$ (9,388)
Theoretical tax expense at the statutory rate (21% in 2024 and 2023)	(2,048)	(1,971)
Differences in jurisdictional tax rates	(455)	(267)
Valuation allowance	2,486	2,441
Non-deductible expenses	54	32
Total income tax provision	37	235
Net loss	$ (9,789)	$ (9,623)