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Note 3 - Securities - Securities With Unrealized Losses (Details) $ in Thousands | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
--- | --- | ---
Count, less than 12 months | 0 | 10
Fair value, less than 12 months | $ 0 | $ 79,872
Unrealized loss, less than 12 months | $ 0 | $ (128)
Count, 12 months or more | 26 | 85
Fair value, 12 months or more | $ 7,786 | $ 50,823
Unrealized loss, 12 months or more | $ (158) | $ (770)
Count, total | 26 | 95
Fair value, total | $ 7,786 | $ 130,695
Unrealized loss, total | $ (158) | $ (898)
US Treasury Securities [Member] |  |
Count, less than 12 months | 0 | 0
Fair value, less than 12 months | $ 0 | $ 0
Unrealized loss, less than 12 months | $ 0 | $ 0
Count, 12 months or more | 16 | 73
Fair value, 12 months or more | $ 5,884 | $ 48,609
Unrealized loss, 12 months or more | $ (101) | $ (689)
Count, total | 16 | 73
Fair value, total | $ 5,884 | $ 48,609
Unrealized loss, total | $ (101) | $ (689)
Residential Mortgage-Backed Securities [Member] |  |
Count, less than 12 months | 0 | 0
Fair value, less than 12 months | $ 0 | $ 0
Unrealized loss, less than 12 months | $ 0 | $ 0
Count, 12 months or more | 5 | 7
Fair value, 12 months or more | $ 1,141 | $ 1,364
Unrealized loss, 12 months or more | $ (48) | $ (69)
Count, total | 5 | 7
Fair value, total | $ 1,141 | $ 1,364
Unrealized loss, total | $ (48) | $ (69)
Collateralized Mortgage-Backed Securities [Member] |  |
Count, less than 12 months | 0 | 0
Fair value, less than 12 months | $ 0 | $ 0
Unrealized loss, less than 12 months | $ 0 | $ 0
Count, 12 months or more | 5 | 5
Fair value, 12 months or more | $ 761 | $ 850
Unrealized loss, 12 months or more | $ (9) | $ (12)
Count, total | 5 | 5
Fair value, total | $ 761 | $ 850
Unrealized loss, total | $ (9) | $ (12)
US Government-sponsored Enterprises Debt Securities [Member] |  |
Count, less than 12 months |  | 10
Fair value, less than 12 months |  | $ 79,872
Unrealized loss, less than 12 months |  | $ (128)
Count, 12 months or more |  | 0
Fair value, 12 months or more |  | $ 0
Unrealized loss, 12 months or more |  | $ 0
Count, total |  | 10
Fair value, total |  | $ 79,872
Unrealized loss, total |  | $ (128)

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