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Note 4 - Allowance for Loan Losses - Allowance by Impairment Methodology and Loans by Impairment Methodology (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Beginning balance	$ 5,710	$ 7,485	$ 7,485
Charge-offs	(213)	(1,151)	(1,447)
Recoveries	305	131	322
Provision for (recovery of) loan losses	400	(1,000)	(650)
Ending balance	6,202	5,465	5,710
Individually evaluated for impairment, allowance	0	78	55
Collectively evaluated for impairment, allowance	6,202	5,387	5,655
Loans	880,089	617,348	825,118
Individually evaluated for impairment, loans	442	2,102	2,304
Collectively evaluated for impairment, loans	879,647	615,246	822,814
Real Estate 1 [Member] | Construction and Land Development [Member]
Beginning balance	345	306	306
Charge-offs	0	0	0
Recoveries	7	0	6
Provision for (recovery of) loan losses	(9)	(32)	33
Ending balance	343	274	345
Individually evaluated for impairment, allowance	0	0	0
Collectively evaluated for impairment, allowance	343	273	345
Loans	49,118	25,035	55,721
Individually evaluated for impairment, loans	0	0	0
Collectively evaluated for impairment, loans	49,118	25,035	55,721
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Beginning balance	1,077	1,022	1,022
Charge-offs	(5)	0	(15)
Recoveries	10	4	65
Provision for (recovery of) loan losses	(40)	(11)	5
Ending balance	1,042	1,015	1,077
Individually evaluated for impairment, allowance	0	0	0
Collectively evaluated for impairment, allowance	1,042	1,015	1,077
Loans	312,083	235,158	291,990
Individually evaluated for impairment, loans	420	410	765
Collectively evaluated for impairment, loans	311,663	234,748	291,225
Real Estate 1 [Member] | Other Real Estate Loans [Member]
Beginning balance	3,230	4,956	4,956
Charge-offs	0	(992)	(992)
Recoveries	4	1	3
Provision for (recovery of) loan losses	334	(893)	(737)
Ending balance	3,568	3,072	3,230
Individually evaluated for impairment, allowance	0	0	0
Collectively evaluated for impairment, allowance	3,568	3,072	3,230
Loans	401,037	245,455	364,921
Individually evaluated for impairment, loans	22	158	30
Collectively evaluated for impairment, loans	401,015	245,297	364,891
Commercial and Industrial Loans [Member]
Beginning balance	718	784	784
Charge-offs	(8)	0	(6)
Recoveries	146	4	7
Provision for (recovery of) loan losses	20	(30)	(67)
Ending balance	876	758	718
Individually evaluated for impairment, allowance	0	78	55
Collectively evaluated for impairment, allowance	876	680	663
Loans	109,548	102,966	99,805
Individually evaluated for impairment, loans	0	1,534	1,509
Collectively evaluated for impairment, loans	109,548	101,432	98,296
Consumer and Other Loans [Member]
Beginning balance	340	417	417
Charge-offs	(200)	(159)	(434)
Recoveries	138	122	241
Provision for (recovery of) loan losses	95	(34)	116
Ending balance	373	346	340
Individually evaluated for impairment, allowance	0	0	0
Collectively evaluated for impairment, allowance	373	347	340
Loans	8,303	8,734	12,681
Individually evaluated for impairment, loans	0	0	0
Collectively evaluated for impairment, loans	$ 8,303	$ 8,734	$ 12,681

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 https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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 https://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

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 (g)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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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

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 (g)
-URI https://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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

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+ References

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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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
-Subparagraph (SAB Topic 6.L.1)
-URI https://asc.fasb.org/extlink&oid=122038336&loc=d3e74567-122707

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-Topic 310
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544

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-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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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
-Name Accounting Standards Codification
-Topic 230
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