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Note 1 - Basis of Presentation - Impact of Adoption of ASU (Details) - USD ($)	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Less: allowance for credit losses	$ 20,162,000	$ 14,438	$ 14,438,000	$ 14,492,000	$ 14,342,000
Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		5,382
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		19,820
Unfunded Loan Commitment [Member]
Less: allowance for credit losses		0
Unfunded Loan Commitment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		(683)
Unfunded Loan Commitment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		(683)
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Less: allowance for credit losses	2,678,000	2,203	2,203,000	1,765,000	1,836,000
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		811
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		3,014
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Less: allowance for credit losses	4,712,000	5,597	5,597,000	7,672,000	7,431,000
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		(1,206)
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		4,391
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Less: allowance for credit losses	1,371,000	662	662,000	419,000	454,000
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		591
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		1,253
Residential Portfolio Segment [Member]
Less: allowance for credit losses	4,967,000	2,047	2,047,000	1,801,000	1,740,000
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		2,744
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		4,791
Commercial And Industrial [Member]
Less: allowance for credit losses	3,819,000	1,483	1,483,000	904,000	882,000
Commercial And Industrial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		2,320
Commercial And Industrial [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		3,803
Home Equity Lines of Credit [Member]
Less: allowance for credit losses	809,000	1,753	1,753,000	1,355,000	1,452,000
Home Equity Lines of Credit [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		(1,031)
Home Equity Lines of Credit [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		722
Construction and Other [Member]
Less: allowance for credit losses	1,553,000	609	609,000	558,000	533,000
Construction and Other [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		956
Construction and Other [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		1,565
Consumer Portfolio Segment [Member]
Less: allowance for credit losses	$ 253,000	84	$ 84,000	$ 18,000	$ 14,000
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Less: allowance for credit losses		197
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Less: allowance for credit losses		$ 281

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
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-Section 1405
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-Publisher SEC

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
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-Publisher SEC

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-SubTopic 10
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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