Note 8 - Leases - Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating lease cost	$ 1,590	$ 1,340
Short-term lease cost	$ 13	$ 81
Weighted average remaining lease term (in years) (Year)	4 years 3 months 18 days
Weighted average discount rate	4.60%
Minimum [Member]
Range of remaining lease terms (in years) (Year)	3 months 18 days
Maximum [Member]
Range of remaining lease terms (in years) (Year)	7 years 3 months 18 days