Note 15 - Federal and State Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unrecognized tax benefits that would impact effective tax rate	$ 2,500
Unrecognized tax benefits, interest on income taxes accrued	$ 486	$ 333
Effective income tax rate	21.00%	21.00%	21.00%
Domestic Tax Authority [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	$ 2,800
Domestic Tax Authority [Member] | Community National And CNB [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	1,400
Domestic Tax Authority [Member] | Guaranty Bank and Trust Company
Federal Tax NOL	1,400
State and Local Jurisdiction [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	2,000
State and Local Jurisdiction [Member] | Community National And CNB [Member]
Deferred tax assets, operating loss carryforwards, subject to expiration	$ 2,000