Note 4 - Loans - Aging of Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Loans	$ 1,070,037	$ 1,016,579
Greater than 90 days past due and still accruing	0	0
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Financial Asset, Past Due [Member]
Loans	0	0
Financial Asset, Not Past Due [Member]
Loans	1,070,037	1,016,579
Commercial Real Estate Portfolio Segment [Member] | Construction and Land [Member]
Loans	46,080	63,060
Greater than 90 days past due and still accruing	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction and Land [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction and Land [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction and Land [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction and Land [Member] | Financial Asset, Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction and Land [Member] | Financial Asset, Not Past Due [Member]
Loans	46,080	63,060
Commercial Real Estate Portfolio Segment [Member] | Multifamily [Member]
Loans	57,371	54,045
Greater than 90 days past due and still accruing	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, Not Past Due [Member]
Loans	57,371	54,045
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Loans	221,790	210,407
Greater than 90 days past due and still accruing	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Financial Asset, Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Financial Asset, Not Past Due [Member]
Loans	221,790	210,407
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [member]
Loans	504,954	470,052
Greater than 90 days past due and still accruing	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [member] | Financial Asset, Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [member] | Financial Asset, Not Past Due [Member]
Loans	504,954	470,052
Commercial Real Estate Portfolio Segment [Member] | Farmland Loans [Member]
Loans	94,712	96,188
Greater than 90 days past due and still accruing	0	0
Commercial Real Estate Portfolio Segment [Member] | Farmland Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Farmland Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Farmland Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Farmland Loans [Member] | Financial Asset, Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Farmland Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	94,712	96,188
Commercial Portfolio Segment [Member]
Loans	74,868	65,218
Greater than 90 days past due and still accruing	0	0
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loans	0	0
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	74,868	65,218
Consumer Portfolio Segment [Member]
Loans	33,229	31,687
Greater than 90 days past due and still accruing	0	0
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	33,229	31,687
Agriculture [Member]
Loans	37,033	25,922
Greater than 90 days past due and still accruing	0	0
Agriculture [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Agriculture [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Agriculture [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Agriculture [Member] | Financial Asset, Past Due [Member]
Loans	0	0
Agriculture [Member] | Financial Asset, Not Past Due [Member]
Loans	$ 37,033	$ 25,922