Note 7 - LHFL and ACL - Collateral-dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Land Development and Construction	$ 567,240	$ 585,591
Inventory [Member]
Land Development and Construction	92
Collateral Real Estate [Member]
Land Development and Construction	2,953
Collateral Receivables [Member]
Land Development and Construction	104
Collateral Pledged [Member]
Land Development and Construction	3,149
Real Estate Segment [Member] \| Inventory [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Collateral Real Estate [Member]
Land Development and Construction	2,953
Real Estate Segment [Member] \| Collateral Receivables [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Collateral Pledged [Member]
Land Development and Construction	2,953
Real Estate Segment [Member] \| Land Development And Construction Loans [Member] \| Inventory [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Land Development And Construction Loans [Member] \| Collateral Real Estate [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Land Development And Construction Loans [Member] \| Collateral Receivables [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Land Development And Construction Loans [Member] \| Collateral Pledged [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Farmland Loan [Member] \| Inventory [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Farmland Loan [Member] \| Collateral Real Estate [Member]
Land Development and Construction	28
Real Estate Segment [Member] \| Farmland Loan [Member] \| Collateral Receivables [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Farmland Loan [Member] \| Collateral Pledged [Member]
Land Development and Construction	28
Real Estate Segment [Member] \| Family Mortgages 1-4 [Member] \| Inventory [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Family Mortgages 1-4 [Member] \| Collateral Real Estate [Member]
Land Development and Construction	184
Real Estate Segment [Member] \| Family Mortgages 1-4 [Member] \| Collateral Receivables [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Family Mortgages 1-4 [Member] \| Collateral Pledged [Member]
Land Development and Construction	184
Real Estate Segment [Member] \| Commercial Real Estate [Member] \| Inventory [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Commercial Real Estate [Member] \| Collateral Real Estate [Member]
Land Development and Construction	2,741
Real Estate Segment [Member] \| Commercial Real Estate [Member] \| Collateral Receivables [Member]
Land Development and Construction	0
Real Estate Segment [Member] \| Commercial Real Estate [Member] \| Collateral Pledged [Member]
Land Development and Construction	2,741
Business Loans [Member] \| Inventory [Member]
Land Development and Construction	92
Business Loans [Member] \| Collateral Real Estate [Member]
Land Development and Construction	0
Business Loans [Member] \| Collateral Receivables [Member]
Land Development and Construction	104
Business Loans [Member] \| Collateral Pledged [Member]
Land Development and Construction	196
Business Loans [Member] \| Commercial and Industrial Loans [Member] \| Inventory [Member]
Land Development and Construction	92
Business Loans [Member] \| Commercial and Industrial Loans [Member] \| Collateral Real Estate [Member]
Land Development and Construction	0
Business Loans [Member] \| Commercial and Industrial Loans [Member] \| Collateral Receivables [Member]
Land Development and Construction	104
Business Loans [Member] \| Commercial and Industrial Loans [Member] \| Collateral Pledged [Member]
Land Development and Construction	196
Business Loans [Member] \| Farm Production And Other Farm Loans Member \| Inventory [Member]
Land Development and Construction	0
Business Loans [Member] \| Farm Production And Other Farm Loans Member \| Collateral Real Estate [Member]
Land Development and Construction	0
Business Loans [Member] \| Farm Production And Other Farm Loans Member \| Collateral Receivables [Member]
Land Development and Construction	0
Business Loans [Member] \| Farm Production And Other Farm Loans Member \| Collateral Pledged [Member]
Land Development and Construction	$ 0