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Note 1 - General - Impact of Adoption of New ASU (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Held-to-Maturity, Allowance for Credit Loss	$ 132		$ 0
Allowance for Credit Loss	8,717	$ 7,446	7,446	$ 5,828	$ 5,710
Allowance for credit losses for unfunded commitments		0
Real Estate 1 [Member] | Construction and Land Development [Member]
Allowance for Credit Loss	244	546	546	348	345
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Allowance for Credit Loss	2,596	1,108	1,108	969	1,077
Real Estate 1 [Member] | Other Real Estate Loans [Member]
Allowance for Credit Loss	5,166	3,609	3,609	3,377	3,230
Commercial and Industrial Loans [Member]
Allowance for Credit Loss	617	1,874	1,874	810	718
Consumer and Other Loans [Member]
Allowance for Credit Loss	94	309	309	$ 324	$ 340
Accounting Standards Update 2016-13 [Member]
Held-to-Maturity, Allowance for Credit Loss	132
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for Credit Loss		9,632
Allowance for credit losses for unfunded commitments		153
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Real Estate 1 [Member] | Construction and Land Development [Member]
Allowance for Credit Loss		233
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Allowance for Credit Loss		2,517
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Real Estate 1 [Member] | Other Real Estate Loans [Member]
Allowance for Credit Loss		5,311
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Commercial and Industrial Loans [Member]
Allowance for Credit Loss		1,487
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Consumer and Other Loans [Member]
Allowance for Credit Loss		84
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Held-to-Maturity, Allowance for Credit Loss		132	132
Allowance for Credit Loss		2,186	2,186
Allowance for credit losses for unfunded commitments		153
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Real Estate 1 [Member] | Construction and Land Development [Member]
Allowance for Credit Loss		(313)	(313)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Allowance for Credit Loss		1,409	1,409
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Real Estate 1 [Member] | Other Real Estate Loans [Member]
Allowance for Credit Loss		1,702	1,705
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial and Industrial Loans [Member]
Allowance for Credit Loss		(387)	(391)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Consumer and Other Loans [Member]
Allowance for Credit Loss		(225)	(224)
Corporate Debt Securities [Member]
Held-to-Maturity, Allowance for Credit Loss	$ 132	0	0
Corporate Debt Securities [Member] | Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Held-to-Maturity, Allowance for Credit Loss		132
Corporate Debt Securities [Member] | Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Held-to-Maturity, Allowance for Credit Loss		$ 132	$ 132

X

- Definition

Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).

+ References

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- 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
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-Name Accounting Standards Codification
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- Definition

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
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-URI https://asc.fasb.org//1943274/2147479344/326-20-45-2

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