Note 10 - Leases (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating Lease, Weighted Average Remaining Lease Term (Year)	10 years 11 months 1 day	12 years 2 months 23 days	10 years 11 months 1 day	12 years 2 months 23 days
Operating Lease, Weighted Average Discount Rate, Percent	3.25%	3.52%	3.25%	3.52%
Operating Lease, Cost	$ 67,000	$ 48,000	$ 134,000	$ 96,000
Other Assets [Member]
Operating Lease, Right-of-Use Asset	1,400,000	1,300,000	1,400,000	1,300,000
Other Liabilities [Member]
Operating Lease, Liability, Total	$ 1,540,000	$ 1,500,000	$ 1,540,000	$ 1,500,000