Note 6 - Premises and Equipment - Components of Premises and Equipment (Parenthetical) (Details)	Dec. 31, 2023	Dec. 31, 2022
Building \| Minimum
Useful lives (Year)	15 years	15 years
Building \| Maximum
Useful lives (Year)	39 years	39 years
Furniture and equipment \| Minimum
Useful lives (Year)	3 years	3 years
Furniture and equipment \| Maximum
Useful lives (Year)	15 years	15 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant