Note 3 - Loans and Allowance for Loan Losses - Activity for Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Retail Portfolio Segment [Member] | Home Equity and Other [Member]
Beginning Balance	$ 1,202
Charge-Offs	0
Payments	(14)
Transfers to ORE	0
Net Additions/Deletions	(1,187)	[1]
Ending Balance	1
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Beginning Balance	627
Charge-Offs	0
Payments	(317)
Transfers to ORE	0
Net Additions/Deletions	2,426	[1]
Ending Balance	2,736
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Beginning Balance	4,973
Charge-Offs	(95)
Payments	(772)
Transfers to ORE	0
Net Additions/Deletions	4,566
Ending Balance	8,672
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Beginning Balance	0
Charge-Offs	0
Payments	0
Transfers to ORE	0
Net Additions/Deletions	0
Ending Balance	0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member]
Beginning Balance	10,435
Charge-Offs	(39)
Payments	(9,683)
Transfers to ORE	0
Net Additions/Deletions	(669)
Ending Balance	44
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member]
Beginning Balance	146
Charge-Offs	0
Payments	(16)
Transfers to ORE	0
Net Additions/Deletions	0
Ending Balance	130
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Beginning Balance	91
Charge-Offs	0
Payments	(91)
Transfers to ORE	0
Net Additions/Deletions	0
Ending Balance	$ 0

[1] Includes $1.2 million in the transfer of home equity lines of credit from other consumer loans to 1-4 family mortgages in association with the adoption of the CECL methodology effective January 1, 2022.