Note 15 - Income Taxes - Reconciliation Statutory Income Tax Rates (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Computed tax at applicable statutory rate	$ 14,135	$ 12,054	$ 8,138
Computed tax at applicable statutory rate, percent	21.00%	21.00%	21.00%
Tax-exempt interest and dividends, net	$ (1,005)	$ (829)	$ (788)
Tax-exempt interest and dividends, net, percent	(2.00%)	(1.00%)	(2.00%)
Low-income housing and rehabilitation tax credits	$ (214)	$ (206)	$ (248)
Low-income housing and rehabilitation tax credits, percent	0.00%	0.00%	(1.00%)
State income taxes, net of Federal income tax benefit	$ 1,328	$ 982	$ 720
State income taxes, net of Federal income tax benefit, percent	2.00%	2.00%	2.00%
Other, net	$ (150)	$ (338)	$ (394)
Other, net, percent	0.00%	(1.00%)	(1.00%)
Total	$ 14,094	$ 11,663	$ 7,428
Applicable income taxes, percent	21.00%	21.00%	19.00%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nondeductible expenses.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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