Note 4 - Allowance for Loan Losses - Allowance by Impairment Methodology and Loans by Impairment Methodology (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Beginning balance	$ 5,710	$ 7,485
Charge-offs	(529)	(1,447)
Recoveries	415	322
Provision for (recovery of) loan losses	1,850	(650)
Ending balance	7,446	5,710
Individually evaluated for impairment, allowance	888	55
Collectively evaluated for impairment, allowance	6,558	5,655
Loans	920,523	825,118
Individually evaluated for impairment, loans	2,673	2,304
Collectively evaluated for impairment, loans	917,850	822,814
Real Estate 1 [Member] \| Construction and Land Development [Member]
Beginning balance	345	306
Charge-offs	0	0
Recoveries	10	6
Provision for (recovery of) loan losses	191	33
Ending balance	546	345
Individually evaluated for impairment, allowance	0	0
Collectively evaluated for impairment, allowance	546	345
Loans	51,840	55,721
Individually evaluated for impairment, loans	1,045	0
Collectively evaluated for impairment, loans	50,795	55,721
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member]
Beginning balance	1,077	1,022
Charge-offs	(6)	(15)
Recoveries	19	65
Provision for (recovery of) loan losses	18	5
Ending balance	1,108	1,077
Individually evaluated for impairment, allowance	0	0
Collectively evaluated for impairment, allowance	1,108	1,077
Loans	331,421	291,990
Individually evaluated for impairment, loans	530	765
Collectively evaluated for impairment, loans	330,891	291,225
Real Estate 1 [Member] \| Other Real Estate Loans [Member]
Beginning balance	3,230	4,956
Charge-offs	0	(992)
Recoveries	15	3
Provision for (recovery of) loan losses	364	(737)
Ending balance	3,609	3,230
Individually evaluated for impairment, allowance	0	0
Collectively evaluated for impairment, allowance	3,609	3,230
Loans	418,456	364,921
Individually evaluated for impairment, loans	13	30
Collectively evaluated for impairment, loans	418,443	364,891
Commercial and Industrial Loans [Member]
Beginning balance	718	784
Charge-offs	(32)	(6)
Recoveries	145	7
Provision for (recovery of) loan losses	1,043	(67)
Ending balance	1,874	718
Individually evaluated for impairment, allowance	888	55
Collectively evaluated for impairment, allowance	986	663
Loans	111,225	99,805
Individually evaluated for impairment, loans	1,085	1,509
Collectively evaluated for impairment, loans	110,140	98,296
Consumer and Other Loans [Member]
Beginning balance	340	417
Charge-offs	(491)	(434)
Recoveries	226	241
Provision for (recovery of) loan losses	234	116
Ending balance	309	340
Individually evaluated for impairment, allowance	0	0
Collectively evaluated for impairment, allowance	309	340
Loans	7,581	12,681
Individually evaluated for impairment, loans	0	0
Collectively evaluated for impairment, loans	$ 7,581	$ 12,681

Amount of direct write-downs of accounts receivable charged against the allowance.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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

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Amount of expense related to estimated loss from loan and lease transactions.

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