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Note 2 - Securities - Investments in an Unrealized Loss Position That Were Temporarily Impaired (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Less than 12 months, fair value, available for sale securities | $ 18,496 | $ 28,284
Less than 12 months, unrealized (loss), available for sale securities | (71) | (372)
12 months or more, fair value, available for sale securities | 125,779 | 127,264
12 months or more, unrealized (loss), available for sale securities | (19,023) | (21,760)
Total, fair value, available for sale securities | 144,275 | 155,548
Total, unrealized (loss), available for sale securities | (19,094) | (22,132)
US Treasury Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 13,823 | 0
Less than 12 months, unrealized (loss), available for sale securities | (10) | 0
12 months or more, fair value, available for sale securities | 11,953 | 11,688
12 months or more, unrealized (loss), available for sale securities | (535) | (795)
Total, fair value, available for sale securities | 25,776 | 11,688
Total, unrealized (loss), available for sale securities | (545) | (795)
US Agency and Mortgage-backed Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 2,302 | 23,445
Less than 12 months, unrealized (loss), available for sale securities | (34) | (237)
12 months or more, fair value, available for sale securities | 65,191 | 67,800
12 months or more, unrealized (loss), available for sale securities | (10,028) | (12,261)
Total, fair value, available for sale securities | 67,493 | 91,245
Total, unrealized (loss), available for sale securities | (10,062) | (12,498)
US States and Political Subdivisions Debt Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 2,371 | 4,839
Less than 12 months, unrealized (loss), available for sale securities | (27) | (135)
12 months or more, fair value, available for sale securities | 48,635 | 47,776
12 months or more, unrealized (loss), available for sale securities | (8,460) | (8,704)
Total, fair value, available for sale securities | 51,006 | 52,615
Total, unrealized (loss), available for sale securities | $ (8,487) | $ (8,839)

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-5 + Details
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