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Note 3 - Securities - Securities With Unrealized Losses (Details) $ in Thousands | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | ---
Count, less than 12 months | 180 |
Collateralized mortgage obligations - residential, fair value | $ 148,388 |
Unrealized loss, less than 12 months | $ (4,581) |
Count, 12 months or more | 54 |
Fair value, 12 months or more | $ 58,835 |
Unrealized loss, 12 months or more | $ (3,707) |
Count, total | 234 |
Fair value, total | $ 207,223 |
Unrealized loss, total | $ (8,288) |
US States and Political Subdivisions Debt Securities [Member] |  |
Count, less than 12 months | 1 |
Collateralized mortgage obligations - residential, fair value | $ 225 |
Unrealized loss, less than 12 months | $ (15) |
Count, 12 months or more | 0 |
Fair value, 12 months or more | $ 0 |
Unrealized loss, 12 months or more | $ 0 |
Count, total | 1 |
Fair value, total | $ 225 |
Unrealized loss, total | $ (15) |
US Treasury Securities [Member] |  |
Count, less than 12 months | 147 | 53
Collateralized mortgage obligations - residential, fair value | $ 104,439 | $ 62,246
Unrealized loss, less than 12 months | $ (4,104) | $ (76)
Count, 12 months or more | 53 | 0
Fair value, 12 months or more | $ 58,664 | $ 0
Unrealized loss, 12 months or more | $ (3,699) | $ 0
Count, total | 200 | 53
Fair value, total | $ 163,103 | $ 62,246
Unrealized loss, total | $ (7,803) | $ (76)
US Government-sponsored Enterprises Debt Securities [Member] |  |
Count, less than 12 months | 9 |
Collateralized mortgage obligations - residential, fair value | $ 39,699 |
Unrealized loss, less than 12 months | $ (301) |
Count, 12 months or more | 0 |
Fair value, 12 months or more | $ 0 |
Unrealized loss, 12 months or more | $ 0 |
Count, total | 9 |
Fair value, total | $ 39,699 |
Unrealized loss, total | $ (301) |
Residential Mortgage-Backed Securities [Member] |  |
Count, less than 12 months | 18 |
Collateralized mortgage obligations - residential, fair value | $ 3,016 |
Unrealized loss, less than 12 months | $ (143) |
Count, 12 months or more | 0 |
Fair value, 12 months or more | $ 0 |
Unrealized loss, 12 months or more | $ 0 |
Count, total | 18 |
Fair value, total | $ 3,016 |
Unrealized loss, total | $ (143) |
Collateralized Mortgage-Backed Securities [Member] |  |
Count, less than 12 months | 5 |
Collateralized mortgage obligations - residential, fair value | $ 1,009 |
Unrealized loss, less than 12 months | $ (18) |
Count, 12 months or more | 1 |
Fair value, 12 months or more | $ 171 |
Unrealized loss, 12 months or more | $ (8) |
Count, total | 6 |
Fair value, total | $ 1,180 |
Unrealized loss, total | $ (26) |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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