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Note 3 - Available-for-sale Securities - Investment Securities in a Continuous Loss Position (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Available-for-sale securities in continuous loss position, less than 12 months, fair value | $ 31,755 | $ 81,657
Available-for-sale securities in continuous loss position, less than 12 months, unrealized loss | (6,924) | (2,318)
Available-for-sale securities in continuous loss position, 12 months or more, fair value | 50,729 | 2,702
Available-for-sale securities in continuous loss position, 12 months or more, unrealized loss | (13,899) | (66)
Available-for-sale securities in continuous loss position, fair value | 82,484 | 84,359
Available-for-sale securities in continuous loss position, unrealized loss | (20,823) | (2,384)
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities in continuous loss position, less than 12 months, fair value | 14,059 | 60,606
Available-for-sale securities in continuous loss position, less than 12 months, unrealized loss | (1,942) | (1,196)
Available-for-sale securities in continuous loss position, 12 months or more, fair value | 44,521 | 1,610
Available-for-sale securities in continuous loss position, 12 months or more, unrealized loss | (12,363) | (49)
Available-for-sale securities in continuous loss position, fair value | 58,580 | 62,216
Available-for-sale securities in continuous loss position, unrealized loss | (14,305) | (1,245)
Corporate Debt Securities [Member] |  |
Available-for-sale securities in continuous loss position, less than 12 months, fair value | 11,341 | 15,042
Available-for-sale securities in continuous loss position, less than 12 months, unrealized loss | (4,688) | (951)
Available-for-sale securities in continuous loss position, 12 months or more, fair value | 1,494 | 0
Available-for-sale securities in continuous loss position, 12 months or more, unrealized loss | (501) | 0
Available-for-sale securities in continuous loss position, fair value | 12,835 | 15,042
Available-for-sale securities in continuous loss position, unrealized loss | (5,189) | (951)
Subordinated Notes [Member] |  |
Available-for-sale securities in continuous loss position, less than 12 months, fair value | 4,735 | 0
Available-for-sale securities in continuous loss position, less than 12 months, unrealized loss | (265) | 0
Available-for-sale securities in continuous loss position, 12 months or more, fair value | 0 | 1,092
Available-for-sale securities in continuous loss position, 12 months or more, unrealized loss | 0 | (17)
Available-for-sale securities in continuous loss position, fair value | 4,735 | 1,092
Available-for-sale securities in continuous loss position, unrealized loss | (265) | (17)
SBA Loan Pools [Member] |  |
Available-for-sale securities in continuous loss position, less than 12 months, fair value | 1,485 | 5,603
Available-for-sale securities in continuous loss position, less than 12 months, unrealized loss | (10) | (169)
Available-for-sale securities in continuous loss position, 12 months or more, fair value | 4,372 | 0
Available-for-sale securities in continuous loss position, 12 months or more, unrealized loss | (970) | 0
Available-for-sale securities in continuous loss position, fair value | 5,857 | 5,603
Available-for-sale securities in continuous loss position, unrealized loss | (980) | (169)
US States and Political Subdivisions Debt Securities [Member] |  |
Available-for-sale securities in continuous loss position, less than 12 months, fair value | 135 | 406
Available-for-sale securities in continuous loss position, less than 12 months, unrealized loss | (19) | (2)
Available-for-sale securities in continuous loss position, 12 months or more, fair value | 342 | 0
Available-for-sale securities in continuous loss position, 12 months or more, unrealized loss | (65) | 0
Available-for-sale securities in continuous loss position, fair value | 477 | 406
Available-for-sale securities in continuous loss position, unrealized loss | $ (84) | $ (2)

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