Note 13 - Commitments, Contingencies and Concentrations - Other Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Weighted-average remaining lease term (in years) (Year)	9 years 10 months 24 days	12 years 2 months 12 days
Weighted-average discount rate	3.33%	3.29%
Operating cash flows from operating leases	$ 402	$ 401