Note 3 - Loans and Allowance for Loan Losses - Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Loans	$ 547,449	$ 514,766
Less undisbursed portion of loans in process	(36,410)	(26,520)
Principal loan balance	511,039	488,246
Deferred loan origination fees and costs, net	1,156	1,124
Allowance for loan losses	(6,245)	(6,083)	$ (6,628)	$ (6,625)
Loans, net	505,950	483,287
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Loans	137,762	130,603
Allowance for loan losses	(1,228)	(1,174)	(1,221)	(1,239)
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member]
Loans	19,489	19,478
Principal loan balance	19,489	19,478
Deferred loan origination fees and costs, net	13	13
Allowance for loan losses	(235)	(234)	(209)	(209)
Real Estate Mortgage Portfolio Segment [Member] \| Residential Construction [Member]
Loans	68,112	59,959
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Construction [Member]
Loans	148,492	137,915
Commercial Portfolio Segment [Member]
Loans	58,031	51,787
Principal loan balance	58,031	51,787
Deferred loan origination fees and costs, net	(21)	(46)
Allowance for loan losses	(994)	(873)	(816)	(843)
Consumer Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Loans	55,893	54,453
Principal loan balance	55,893	54,453
Deferred loan origination fees and costs, net	1,148	1,129
Allowance for loan losses	(517)	(527)	$ (622)	$ (617)
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Loans	44,394	43,946
Consumer Portfolio Segment [Member] \| Loans Secured by Deposits [Member]
Loans	816	827
Consumer Portfolio Segment [Member] \| Unsecured Loan [Member]
Loans	2,121	2,219
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Loans	12,339	13,579
Principal loan balance	59,670	60,571
Deferred loan origination fees and costs, net	$ 0	$ 0

Represents the loans and leases 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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Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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