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Note 3 - Loans and Allowance for Credit Losses - Amortized Cost of Modified Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Modified	$ 28,813
Financial Asset, Not Past Due [Member]
Modified	28,813
Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member]
Modified	28,813
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Modified	28,813
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Modified	17,919	$ 8,672	$ 4,973
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financial Asset, Not Past Due [Member]
Modified	17,919
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Modified	0	0	0
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] | Financial Asset, Not Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member]
Modified	0	44	10,435
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] | Financial Asset, Not Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member]
Modified	10,894	130	146
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] | Financial Asset, Not Past Due [Member]
Modified	10,894
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Modified	0	0	91
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] | Financial Asset, Not Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Retail Portfolio Segment [Member]
Modified	0
Retail Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Modified	0	$ 2,736	$ 627
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] | Financial Asset, Not Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | Other Consumer Loans [Member]
Modified	0
Retail Portfolio Segment [Member] | Other Consumer Loans [Member] | Financial Asset, Not Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | Other Consumer Loans [Member] | Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Retail Portfolio Segment [Member] | Other Consumer Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	$ 0

X

- Definition

Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481746/310-40-50-4

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