Note 7 - LHFL and ACL - Age Analysis of Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Land Development and Construction	$ 1,099
Land Development and Construction	2,993	$ 2,988
Land Development and Construction	5	111
Real Estate Segment [Member]
Land Development and Construction	903
Land Development and Construction	2,647	2,683
Land Development and Construction	0	99
Real Estate Segment [Member] | Land Development And Construction Loans [Member]
Land Development and Construction	0
Land Development and Construction	2	0
Land Development and Construction	0	4
Real Estate Segment [Member] | Farmland Loan [Member]
Land Development and Construction	28
Land Development and Construction	108	117
Land Development and Construction	0	0
Real Estate Segment [Member] | Family Mortgages 1-4 [Member]
Land Development and Construction	184
Land Development and Construction	1,712	1,720
Land Development and Construction	0	0
Real Estate Segment [Member] | Commercial Real Estate Portfolio Segment [Member]
Land Development and Construction	691
Land Development and Construction	825	846
Land Development and Construction	0	95
Business Loans [Member]
Land Development and Construction	196
Land Development and Construction	307	281
Land Development and Construction	0	0
Business Loans [Member] | Commercial and Industrial Loans [Member]
Land Development and Construction	196
Land Development and Construction	307	281
Land Development and Construction	0	0
Business Loans [Member] | Farm Production And Other Farm Loans Member
Land Development and Construction	0
Land Development and Construction	0	0
Land Development and Construction	0	0
Consumer Portfolio Segment [Member]
Land Development and Construction	0
Land Development and Construction	39	24
Land Development and Construction	5	12
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Land Development and Construction	0
Land Development and Construction	39	24
Land Development and Construction	0	0
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Land Development and Construction	0
Land Development and Construction	0	0
Land Development and Construction	$ 5	$ 12