Note 6 - Leases -Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Weighted average remaining lease term (years) (Year)	4 years 3 months		4 years 3 months
Weighted average discount rates	3.79%		3.79%
Operating lease cost	$ 777	$ 779	$ 2,279	$ 2,377
Cash payments for operating leases	$ 771	$ 771	$ 2,255	$ 2,341