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Investment Securities - Schedule of Unrealized Loss Positions (Details) $ in Thousands | Sep. 30, 2024 USD ($) loan | Dec. 31, 2023 USD ($) loan
--- | --- | ---
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 13,855 | $ 3,172
Less than 12 months, unrealized loss | (906) | (77)
12 months or more, fair value | 275,434 | 293,311
12 months or more, unrealized loss | $ (25,163) | $ (33,412)
United States government agency securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 23 | 25
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 302 | $ 316
Less than 12 months, unrealized loss | (1) | 0
12 months or more, fair value | 34,215 | 34,619
12 months or more, unrealized loss | $ (4,184) | $ (5,603)
United States sponsored mortgage-backed securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 48 | 47
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 4,842 | $ 0
Less than 12 months, unrealized loss | (78) | 0
12 months or more, fair value | 48,286 | 50,345
12 months or more, unrealized loss | $ (8,869) | $ (10,549)
United States treasury securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 23 | 23
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 0 | $ 0
Less than 12 months, unrealized loss | 0 | 0
12 months or more, fair value | 103,241 | 100,354
12 months or more, unrealized loss | $ (2,931) | $ (6,045)
Municipal securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 191 | 216
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 8,711 | $ 847
Less than 12 months, unrealized loss | (827) | (10)
12 months or more, fair value | 86,256 | 106,060
12 months or more, unrealized loss | $ (9,032) | $ (11,148)
Corporate debt securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 6 | 7
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 0 | $ 2,009
Less than 12 months, unrealized loss | 0 | (67)
12 months or more, fair value | 3,436 | 1,933
12 months or more, unrealized loss | $ (147) | $ (67)

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