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Note 4 - Allowance for Loan Losses - Allowance by Impairment Methodology and Loans by Impairment Methodology (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Beginning balance	$ 7,485	$ 4,934
Charge-offs	(1,447)	(784)
Recoveries	322	335
(Recovery of) provision for loan losses	(650)	3,000
Ending balance	5,710	7,485
Individually evaluated for impairment, allowance	55	2,223
Collectively evaluated for impairment, allowance	5,655	5,262
Loans	825,118	629,914
Individually evaluated for impairment, loans	2,304	6,714
Collectively evaluated for impairment, loans	822,814	623,200
Real Estate 1 [Member] | Construction and Land Development [Member]
Beginning balance	306	464
Charge-offs	0	0
Recoveries	6	2
(Recovery of) provision for loan losses	33	(160)
Ending balance	345	306
Individually evaluated for impairment, allowance	0	0
Collectively evaluated for impairment, allowance	345	306
Loans	55,721	27,328
Individually evaluated for impairment, loans	0	276
Collectively evaluated for impairment, loans	55,721	27,052
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Beginning balance	1,022	776
Charge-offs	(15)	0
Recoveries	65	8
(Recovery of) provision for loan losses	5	238
Ending balance	1,077	1,022
Individually evaluated for impairment, allowance	0	0
Collectively evaluated for impairment, allowance	1,077	1,022
Loans	291,990	235,814
Individually evaluated for impairment, loans	765	449
Collectively evaluated for impairment, loans	291,225	235,365
Real Estate 1 [Member] | Other Real Estate Loans [Member]
Beginning balance	4,956	2,296
Charge-offs	(992)	0
Recoveries	3	2
(Recovery of) provision for loan losses	(737)	2,658
Ending balance	3,230	4,956
Individually evaluated for impairment, allowance	0	2,065
Collectively evaluated for impairment, allowance	3,230	2,891
Loans	364,921	246,883
Individually evaluated for impairment, loans	30	4,441
Collectively evaluated for impairment, loans	364,891	242,442
Commercial and Industrial Loans [Member]
Beginning balance	784	562
Charge-offs	(6)	(69)
Recoveries	7	18
(Recovery of) provision for loan losses	(67)	273
Ending balance	718	784
Individually evaluated for impairment, allowance	55	158
Collectively evaluated for impairment, allowance	663	626
Loans	99,805	109,838
Individually evaluated for impairment, loans	1,509	1,548
Collectively evaluated for impairment, loans	98,296	108,290
Consumer and Other Loans [Member]
Beginning balance	417	836
Charge-offs	(434)	(715)
Recoveries	241	305
(Recovery of) provision for loan losses	116	(9)
Ending balance	340	417
Individually evaluated for impairment, allowance	0	0
Collectively evaluated for impairment, allowance	340	417
Loans	12,681	10,051
Individually evaluated for impairment, loans	0	0
Collectively evaluated for impairment, loans	$ 12,681	$ 10,051

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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X

- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(4)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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X

- Definition

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

+ References

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-Publisher FASB
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-Topic 310
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X

- Definition

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

+ References

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-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

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

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
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X

- Definition

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.

+ References

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-Publisher FASB
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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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