Note 2 - Investment Securities - Amortized Cost and Fair Value of Investment Securities Classified as AFS (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Amortized Cost	$ 416,002	$ 392,564
Gross Unrealized Gains	1,026	227
Gross Unrealized Losses	(46,414)	(61,670)
Fair Value	370,614	331,121
US Government Corporations and Agencies Securities [Member]
Amortized Cost	18,910	15,985
Gross Unrealized Gains	54	47
Gross Unrealized Losses	(213)	(325)
Fair Value	18,751	15,707
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	17,736	18,363
Gross Unrealized Gains	43	0
Gross Unrealized Losses	(1,497)	(2,243)
Fair Value	16,282	16,120
Corporate Debt Securities [Member]
Amortized Cost	25,922	29,772
Gross Unrealized Gains	95	8
Gross Unrealized Losses	(1,335)	(2,513)
Fair Value	24,682	27,267
Residential Mortgage-Backed Securities [Member]
Amortized Cost	282,849	256,272
Gross Unrealized Gains	716	39
Gross Unrealized Losses	(36,186)	(47,543)
Fair Value	247,379	208,768
Commercial Mortgage-Backed Securities [Member]
Amortized Cost	70,585	72,172
Gross Unrealized Gains	118	133
Gross Unrealized Losses	(7,183)	(9,046)
Fair Value	$ 63,520	$ 63,259

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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