Note 5 - Loans and Leases - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Modification percent
Commercial Portfolio Segment [Member] \| Commercial [Member]
Modification percent	0.03%	0.03%
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Modification percent	2.38%
Principal Forgiveness	$ 0
Weighted-Average Interest Rate Reduction	0.00%
Weighted-Average Term Extension (Month)	5 months
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Modification percent	0.08%	1.30%
Principal Forgiveness		$ 0
Weighted-Average Interest Rate Reduction		6.13%
Weighted-Average Term Extension (Month)		8 months 24 days
Principal Forgiveness [Member]
Modification amount	$ 0	$ 0
Principal Forgiveness [Member] \| Commercial Portfolio Segment [Member] \| Commercial [Member]
Modification amount	0	0
Principal Forgiveness [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Modification amount	0
Principal Forgiveness [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Modification amount	0	0
Payment Deferral [Member]
Modification amount	335	46
Payment Deferral [Member] \| Commercial Portfolio Segment [Member] \| Commercial [Member]
Modification amount	50	46
Payment Deferral [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Modification amount	0
Payment Deferral [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Modification amount	285	0
Extended Maturity [Member]
Modification amount	6,546	915
Extended Maturity [Member] \| Commercial Portfolio Segment [Member] \| Commercial [Member]
Modification amount	0	0
Extended Maturity [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Modification amount	6,546
Extended Maturity [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Modification amount	0	915
Contractual Interest Rate Reduction [Member]
Modification amount	0	3,191
Contractual Interest Rate Reduction [Member] \| Commercial Portfolio Segment [Member] \| Commercial [Member]
Modification amount	0	0
Contractual Interest Rate Reduction [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Modification amount	0
Contractual Interest Rate Reduction [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Modification amount	0	3,191
Extended Maturity and Principal Forgiveness [Member]
Modification amount	0	0
Extended Maturity and Principal Forgiveness [Member] \| Commercial Portfolio Segment [Member] \| Commercial [Member]
Modification amount	0	0
Extended Maturity and Principal Forgiveness [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Modification amount	0
Extended Maturity and Principal Forgiveness [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Modification amount	0	0
Extended Maturity and Interest Rate Reduction [Member]
Modification amount	0	0
Extended Maturity and Interest Rate Reduction [Member] \| Commercial Portfolio Segment [Member] \| Commercial [Member]
Modification amount	0	0
Extended Maturity and Interest Rate Reduction [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Modification amount	0
Extended Maturity and Interest Rate Reduction [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Modification amount	$ 0	$ 0

Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-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

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- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

+ References

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- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of increase (decrease) in amortized cost of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
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-Section 50
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