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Note 3 - Securities - Securities With Unrealized Losses (Details) $ in Thousands | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Count, less than 12 months | 5 | 180
Collateralized mortgage obligations - residential, fair value | $ 13,033 | $ 148,388
Unrealized loss, less than 12 months | $ (81) | $ (4,581)
Count, 12 months or more | 208 | 54
Fair value, 12 months or more | $ 141,950 | $ 58,835
Unrealized loss, 12 months or more | $ (5,489) | $ (3,707)
Count, total | 213 | 234
Fair value, total | $ 154,983 | $ 207,223
Unrealized loss, total | $ (5,570) | $ (8,288)
US States and Political Subdivisions Debt Securities [Member] |  |
Count, less than 12 months | 0 | 1
Collateralized mortgage obligations - residential, fair value | $ 0 | $ 225
Unrealized loss, less than 12 months | $ 0 | $ (15)
Count, 12 months or more | 1 | 0
Fair value, 12 months or more | $ 229 | $ 0
Unrealized loss, 12 months or more | $ (11) | $ 0
Count, total | 1 | 1
Fair value, total | $ 229 | $ 225
Unrealized loss, total | $ (11) | $ (15)
US Treasury Securities [Member] |  |
Count, less than 12 months | 0 | 147
Collateralized mortgage obligations - residential, fair value | $ 0 | $ 104,439
Unrealized loss, less than 12 months | $ 0 | $ (4,104)
Count, 12 months or more | 181 | 53
Fair value, 12 months or more | $ 123,095 | $ 58,664
Unrealized loss, 12 months or more | $ (5,231) | $ (3,699)
Count, total | 181 | 200
Fair value, total | $ 123,095 | $ 163,103
Unrealized loss, total | $ (5,231) | $ (7,803)
US Government-sponsored Enterprises Debt Securities [Member] |  |
Count, less than 12 months | 3 | 9
Collateralized mortgage obligations - residential, fair value | $ 12,922 | $ 39,699
Unrealized loss, less than 12 months | $ (78) | $ (301)
Count, 12 months or more | 3 | 0
Fair value, 12 months or more | $ 14,941 | $ 0
Unrealized loss, 12 months or more | $ (59) | $ 0
Count, total | 6 | 9
Fair value, total | $ 27,863 | $ 39,699
Unrealized loss, total | $ (137) | $ (301)
Residential Mortgage-Backed Securities [Member] |  |
Count, less than 12 months | 2 | 18
Collateralized mortgage obligations - residential, fair value | $ 111 | $ 3,016
Unrealized loss, less than 12 months | $ (3) | $ (143)
Count, 12 months or more | 16 | 0
Fair value, 12 months or more | $ 2,652 | $ 0
Unrealized loss, 12 months or more | $ (162) | $ 0
Count, total | 18 | 18
Fair value, total | $ 2,763 | $ 3,016
Unrealized loss, total | $ (165) | $ (143)
Collateralized Mortgage-Backed Securities [Member] |  |
Count, less than 12 months | 0 | 5
Collateralized mortgage obligations - residential, fair value | $ 0 | $ 1,009
Unrealized loss, less than 12 months | $ 0 | $ (18)
Count, 12 months or more | 7 | 1
Fair value, 12 months or more | $ 1,033 | $ 171
Unrealized loss, 12 months or more | $ (26) | $ (8)
Count, total | 7 | 6
Fair value, total | $ 1,033 | $ 1,180
Unrealized loss, total | $ (26) | $ (26)

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