Note 14 - Income Taxes - Reconciliation of Statutory Federal Tax Rate and Effective Tax Rate From Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Federal income tax at the statutory rate, amount									$ 12,633	$ 13,971	$ 9,683
Federal income tax at the statutory rate									21.00%	21.00%	21.00%
State income tax, net of federal benefit, amount									$ 1,432	$ 2,076	$ 1,109
State income tax, net of federal benefit									2.38%	3.12%	3.12%
Total effective income tax rate reconciliation, amount									$ 14,065	$ 16,047	$ 10,792
Total effective income tax rate reconciliation									23.38%	24.12%	24.12%
Tax-exempt interest income, amount									$ (347)	$ (340)	$ (500)
Tax-exempt interest income									(0.58%)	(0.51%)	(1.08%)
Excess tax benefits									$ (24)	$ (133)	$ 42
Excess tax benefits									(0.04%)	(0.20%)	0.09%
Bank owned life insurance, amount									$ (68)	$ (225)	$ (139)
Bank owned life insurance									(0.11%)	(0.34%)	(0.30%)
Other items, net, amount									$ (131)	$ 11	$ (9)
Other items, net									(0.22%)	0.02%	(0.74%)
Total income tax expense	$ 3,076	$ 4,111	$ 3,423	$ 2,885	$ 3,037	$ 3,816	$ 4,077	$ 4,430	$ 13,495	$ 15,360	$ 10,186
Income tax at the effective tax rate									22.43%	23.09%	22.09%