Note 4 - Premises and Equipment, Net (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Depreciation	$ 6,000	$ 6,000	$ 5,800
Operating Lease, Weighted Average Remaining Lease Term (Year)	10 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	5.93%
Operating Lease, Expense	$ 2,000	1,300	$ 1,200
Premises and Equipment, Net [Member]
Operating Lease, Right-of-Use Asset	3,700	3,500
Other Liabilities [Member]
Operating Lease, Liability	$ 3,692	$ 3,500
Minimum [Member]
Lessee, Operating Lease, Renewal Term (Year)	3 years
Maximum [Member]
Lessee, Operating Lease, Renewal Term (Year)	5 years