Note 18 - Derivative Instruments - Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location 2 (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Loans, including fees	$ 62,214	$ 63,853	$ 120,835	$ 125,348
Taxable	7,258	5,310	14,363	11,017
Total amounts in the Consolidated Statements of Income	2,935	3,982	5,292	6,821
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases
Loans, including fees	62,214	63,853	120,835	125,348
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases \| Interest Rate Swap [Member] \| Fair Value Hedging [Member]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	0
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases \| Interest Rate Swap [Member] \| Cash Flow Hedging [Member]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	0
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseShortTermBorrowings
Total amounts in the Consolidated Statements of Income	2,935	3,982	5,292	6,821
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseShortTermBorrowings \| Interest Rate Swap [Member] \| Fair Value Hedging [Member]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	0
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseShortTermBorrowings \| Interest Rate Swap [Member] \| Cash Flow Hedging [Member]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	(22)
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestIncomeSecuritiesTaxable
Taxable	7,258	5,310	14,363	11,017
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestIncomeSecuritiesTaxable \| Interest Rate Swap [Member] \| Fair Value Hedging [Member]
Derivative, Gain (Loss) on Derivative, Net	(1)	143	(11)	291
Designated as Hedging Instrument [Member] \| Location, Statement of Income, Balance [Axis]: us-gaap:InterestIncomeSecuritiesTaxable \| Interest Rate Swap [Member] \| Cash Flow Hedging [Member]
Derivative, Gain (Loss) on Derivative, Net	$ 0	$ 0	$ 0	$ 0

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 825
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-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
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- Definition

The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-21

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(1))
-Publisher FASB
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- Definition

The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(7))
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- Definition

Amount of operating interest income, including amortization and accretion of premiums and discounts, on securities subject to state, federal and other income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph a
-Publisher SEC

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
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-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
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