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Investment Securities - Schedule of Unrealized Loss Positions (Details) $ in Thousands | Dec. 31, 2023 USD ($) loan | Dec. 31, 2022 USD ($) loan
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Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 3,172 | $ 108,486
Less than 12 months, unrealized loss | (77) | (10,446)
12 months or more, fair value | 293,311 | 212,317
12 months or more, unrealized loss | $ (33,412) | $ (39,353)
United States government agency securities |  |
Description and number of positions |  |
Number of investments in an unrealized loss position, AFS | loan | 25 | 32
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 316 | $ 21,287
Less than 12 months, unrealized loss | 0 | (1,937)
12 months or more, fair value | 34,619 | 19,423
12 months or more, unrealized loss | $ (5,603) | $ (4,700)
United States sponsored mortgage-backed securities |  |
Description and number of positions |  |
Number of investments in an unrealized loss position, AFS | loan | 47 | 51
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 0 | $ 6,953
Less than 12 months, unrealized loss | 0 | (852)
12 months or more, fair value | 50,345 | 49,618
12 months or more, unrealized loss | $ (10,549) | $ (10,844)
United States treasury securities |  |
Description and number of positions |  |
Number of investments in an unrealized loss position, AFS | loan | 23 | 29
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 0 | $ 11,936
Less than 12 months, unrealized loss | 0 | (130)
12 months or more, fair value | 100,354 | 102,092
12 months or more, unrealized loss | $ (6,045) | $ (9,698)
Municipal securities |  |
Description and number of positions |  |
Number of investments in an unrealized loss position, AFS | loan | 216 | 173
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 847 | $ 65,930
Less than 12 months, unrealized loss | (10) | (7,507)
12 months or more, fair value | 106,060 | 41,184
12 months or more, unrealized loss | $ (11,148) | $ (14,111)
Corporate debt securities |  |
Description and number of positions |  |
Number of investments in an unrealized loss position, AFS | loan | 7 | 3
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 2,009 | $ 2,380
Less than 12 months, unrealized loss | (67) | (20)
12 months or more, fair value | 1,933 | 0
12 months or more, unrealized loss | $ (67) | $ 0

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