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Note 3 - Securities - Available for Sale Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Securities, Available-for-Sale, Amortized Cost | $ 439,277 | $ 455,477
Available for sale securities, gross unrealized gains | 60 | 7
Available for sale securities, gross unrealized losses | (67,963) | (84,588)
Total securities available-for-sale | 371,374 | 370,896
US Government-sponsored Enterprises Debt Securities [Member] |  |
Debt Securities, Available-for-Sale, Amortized Cost | 8,884 | 8,883
Available for sale securities, gross unrealized gains | 0 | 0
Available for sale securities, gross unrealized losses | (1,001) | (1,258)
Total securities available-for-sale | 7,883 | 7,625
US Treasury Securities [Member] |  |
Debt Securities, Available-for-Sale, Amortized Cost | 0 | 389
Available for sale securities, gross unrealized gains | 0 | 0
Available for sale securities, gross unrealized losses | 0 | 0
Total securities available-for-sale | 0 | 389
Collateralized Mortgage Obligations and Residential Mortgage Backed Securities [Member] |  |
Debt Securities, Available-for-Sale, Amortized Cost | 149,410 | 163,000
Available for sale securities, gross unrealized gains | 0 | 0
Available for sale securities, gross unrealized losses | (25,946) | (28,884)
Total securities available-for-sale | 123,464 | 134,116
US States and Political Subdivisions Debt Securities [Member] |  |
Debt Securities, Available-for-Sale, Amortized Cost | 278,813 | 281,032
Available for sale securities, gross unrealized gains | 60 | 7
Available for sale securities, gross unrealized losses | (40,203) | (53,321)
Total securities available-for-sale | 238,670 | 227,718
Collateralized Debt Obligations [Member] |  |
Debt Securities, Available-for-Sale, Amortized Cost | 2,170 | 2,173
Available for sale securities, gross unrealized gains | 0 | 0
Available for sale securities, gross unrealized losses | (813) | (1,125)
Total securities available-for-sale | $ 1,357 | $ 1,048

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- Definition 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). + References 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 + Details
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- Definition 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 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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