Note 14 - Federal and State Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Unrecognized tax benefits that would impact effective tax rate	$ 2,200
Unrecognized tax benefits, interest on income taxes accrued	$ 333	$ 236
Effective income tax rate	21.00%	21.00%	21.00%
Domestic Tax Authority [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	$ 5,400
Domestic Tax Authority [Member] | Community National And CNB [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	1,900
Domestic Tax Authority [Member] | Guaranty Bank and Trust Company
Federal Tax NOL	3,500
State and Local Jurisdiction [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	2,100
State and Local Jurisdiction [Member] | Community National And CNB [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	$ 2,100