Note 7 - Leases - Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Operating cash flows from operating leases as lessee	$ 466	$ 448
Operating leases as lessee (in years) (Year)	54 years 10 months 24 days		55 years 3 months 18 days
Operating leases as lessee	4.62%		4.62%