Note 4 - Loans and Allowance for Loan Losses - Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans	$ 608,091	$ 514,766
Less undisbursed portion of loans in process	(44,574)	(26,520)
Principal loan balance	563,517	488,246
Deferred loan origination fees and costs, net	1,213	1,124
Allowance for loan losses	(6,772)	(6,083)	$ (6,625)	$ (5,061)
Loans, net	557,958	483,287
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Loans	155,334	130,603
Allowance for loan losses	(1,383)	(1,174)	(1,239)	(867)
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member]
Loans	21,860	19,478
Principal loan balance	21,860	19,478
Allowance for loan losses	(265)	(234)	(209)	(163)
Real Estate Mortgage Portfolio Segment [Member] \| Residential Construction [Member]
Loans	86,845	59,959
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Construction [Member]
Loans	161,425	137,915
Commercial Portfolio Segment [Member]
Loans	60,817	51,787
Principal loan balance	60,817	51,787
Allowance for loan losses	(1,046)	(873)	(843)	(595)
Consumer Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Loans	57,781	54,453
Principal loan balance	57,781	54,453
Allowance for loan losses	(530)	(527)	(617)	(515)
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Loans	48,184	43,946
Consumer Portfolio Segment [Member] \| Loans Secured by Deposits [Member]
Loans	627	827
Consumer Portfolio Segment [Member] \| Unsecured Loan [Member]
Loans	2,245	2,219
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Loans	12,973	13,579
Principal loan balance	$ 64,029	$ 60,571
Allowance for loan losses			$ (1,067)	$ (948)

Represents the financing receivable principal balance.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Amount of undisbursed portion of financing receivable balance. Excludes financing receivable covered under loss sharing agreement.

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Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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