Note 19 - Stock Options - Fair Value Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Risk-free rate, minimum	3.90%	3.60%
Risk-free rate, maximum	4.20%	4.30%
Expected dividend yield	0.00%	0.00%
Expected volatility, minimum	92.10%	85.80%
Expected volatility, maximum	95.10%	88.40%
Expected term (in years) (Year)	6 years	6 years
Minimum [Member]
Exercise price (in dollars per share)	$ 1.02	$ 2.5
Maximum [Member]
Exercise price (in dollars per share)	$ 2.42	$ 4.21