Note 15 - Income Taxes - Deferred Tax Assets an Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Allowance for credit losses	$ 13,400	$ 11,003
Foreclosed properties	504	789
Deferred compensation	5,156	4,830
Other deferred costs and accrued expenses	1,343	1,096
Lease liability	2,141	0
Net unrealized loss on debt securities available for sale	9,224	11,968
Net unrealized loss on equity investments	49	17
Acquisition accounting adjustments and goodwill	434	0
Total	32,251	29,703
Depreciation	627	726
Accretion on tax-exempt securities	73	8
Right of use asset	2,088	0
Net unrealized gain on interest rate swaps	6,811	8,299
Other post-retirement benefits	52	46
Acquisition accounting adjustments and goodwill	0	2,944
Total	9,651	12,023
Net deferred tax assets	$ 22,600	$ 17,680