Note 4 - Investment Securities - Amortized Cost and Fair Value of Investment Securities Classified as AFS (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Amortized Cost	$ 459,375	$ 416,002
Gross Unrealized Gains	572	1,026
Gross Unrealized Losses	(48,621)	(46,414)
Fair Value	411,326	370,614
US Government Corporations and Agencies Securities [Member]
Amortized Cost	35,926	18,910
Gross Unrealized Gains	31	54
Gross Unrealized Losses	(539)	(213)
Fair Value	35,418	18,751
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	18,858	17,736
Gross Unrealized Gains	38	43
Gross Unrealized Losses	(1,590)	(1,497)
Fair Value	17,306	16,282
Corporate Debt Securities [Member]
Amortized Cost	25,406	25,922
Gross Unrealized Gains	133	95
Gross Unrealized Losses	(1,351)	(1,335)
Fair Value	24,188	24,682
Residential Mortgage-Backed Securities [Member]
Amortized Cost	299,347	282,849
Gross Unrealized Gains	235	716
Gross Unrealized Losses	(37,734)	(36,186)
Fair Value	261,848	247,379
Commercial Mortgage-Backed Securities [Member]
Amortized Cost	79,838	70,585
Gross Unrealized Gains	135	118
Gross Unrealized Losses	(7,407)	(7,183)
Fair Value	$ 72,566	$ 63,520

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
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-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
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-Section 45
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-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

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-Topic 942
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-Paragraph 1
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-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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