Note 11 - Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating lease cost	$ 317	$ 294	$ 643	$ 618
Short-term lease cost	$ 14	$ 32	$ 44	$ 40
Weighted average remaining lease term (in years) (Year)	5 years 3 months 18 days		5 years 3 months 18 days
Weighted average discount rate	4.10%		4.10%
Minimum [Member]
Range of remaining lease terms (in years) (Year)			9 months 18 days
Maximum [Member]
Range of remaining lease terms (in years) (Year)			8 years 9 months 18 days