Note 9 - Leases - Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating cash outflows from operating leases	$ 52	$ 54	$ 156	$ 164
Weighted average remaining lease term in years (Year)	8 years 9 months	1 year 6 months 3 days	8 years 9 months	1 year 6 months 3 days
Weighted average discount rate	6.00%	6.00%	6.00%	6.00%