Note 13 - Derivatives and Hedging Activities - Derivatives on the Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Total amounts recognized in interest on investment securities	$ 3,067	$ 3,244	$ 8,375	$ 10,513
Total amounts recognized in interest and fees on loans receivable	21,815	22,814	65,812	67,859
Interest Rate Swap [Member]
Total amounts recognized in interest on investment securities	3,067	3,244	8,375	10,513
Total amounts recognized in interest and fees on loans receivable	21,815	22,814	65,812	67,859
Derivative, gain (loss)	(16)	(34)	(10)	(77)
Interest Rate Swap [Member] \| Asset-Backed Securities [Member]
Recognized on hedged items	421	9	1,173	(782)
Interest Rate Swap [Member] \| Asset-Backed Securities [Member] \| Designated as Hedging Instrument [Member]
Derivative, gain (loss)	(426)	(22)	(1,186)	739
Interest Rate Swap [Member] \| Closed Portfolio of Loans Receivable [Member]
Recognized on hedged items	363	(35)	1,257	(1,084)
Interest Rate Swap [Member] \| Closed Portfolio of Loans Receivable [Member] \| Designated as Hedging Instrument [Member]
Derivative, gain (loss)	$ (374)	$ 14	$ (1,254)	$ 1,050

Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying fair value hedge included in assessment of hedge effectiveness.

No definition available.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
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-Publisher FASB
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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.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
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Amount of interest income, amortization of premium and accretion of discount, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading); classified as operating.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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