Note 10 - Lease Commitments (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Lease, Expense	$ 999,000	$ 904,000	$ 606,000
Operating Lease, Payments	$ 859,000	$ 732,000	$ 358,000
Lessee, Operating Lease, Remaining Lease Term (Year)	8 years 7 months 6 days	9 years
Lessee, Operating Lease, Discount Rate	1.71%	1.46%
Other Assets [Member]
Operating Lease, Right-of-Use Asset	$ 6,000,000.0	$ 6,400,000
Other Liabilities [Member]
Operating Lease, Liability, Total	$ 6,081,000	$ 6,600,000