Note 8 - Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating lease cost	$ 396	$ 330	$ 1,199	$ 973
Short-term lease cost	$ 3	$ 7	$ 10	$ 51
Weighted average remaining lease term (in years) (Year)	4 years 6 months		4 years 6 months
Weighted average discount rate	4.40%		4.40%
Minimum [Member]
Range of remaining lease terms (in years) (Year)			6 months
Maximum [Member]
Range of remaining lease terms (in years) (Year)			7 years 7 months 6 days