Note 8 - Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating lease cost	$ 400	$ 326
Short-term lease cost	$ 3	$ 30
Weighted average remaining lease term (in years) (Year)	4 years 9 months 18 days
Weighted average discount rate	4.40%
Minimum [Member]
Range of remaining lease terms (in years) (Year)	3 months 18 days
Maximum [Member]
Range of remaining lease terms (in years) (Year)	8 years 1 month 6 days