Note 3 - Loans - Writeoff of Accrued Interest on Loans (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Accrued Interest, Writeoff	$ 11
Commercial Portfolio Segment [Member]
Accrued Interest, Writeoff	1
Commercial Real Estate Portfolio Segment [Member] | Construction and Land Development [Member]
Accrued Interest, Writeoff	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member]
Accrued Interest, Writeoff	8
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied Commercial Real Estate [Member]
Accrued Interest, Writeoff	0
Residential Portfolio Segment [Member] | Residential [Member]
Accrued Interest, Writeoff	2
Residential Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Accrued Interest, Writeoff	0
Consumer Portfolio Segment [Member]
Accrued Interest, Writeoff	$ 0