Note 8 - Leases - Other Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating cash flows from operating leases	$ 1,011	$ 911	$ 623
Right-of-use assets obtained in exchange for lease obligations	$ 167	$ 0	$ 370
Weighted average remaining lease term in years for operating leases (Year)	33 years 2 months 12 days	33 years	33 years 4 months 24 days
Weighted average discount rate for operating leases	3.67%	3.53%	3.46%