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Investment Securities - Schedule of Unrealized Loss Positions (Details) $ in Thousands | Sep. 30, 2025 USD ($) loan | Dec. 31, 2024 USD ($) loan
--- | --- | ---
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 44,453 | $ 117,488
Less than 12 months, unrealized loss | (812) | (3,990)
12 months or more, fair value | 131,993 | 267,683
12 months or more, unrealized loss | $ (18,960) | $ (30,150)
United States government agency securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 17 | 28
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 370 | $ 5,956
Less than 12 months, unrealized loss | (2) | (264)
12 months or more, fair value | 18,698 | 32,854
12 months or more, unrealized loss | $ (2,543) | $ (5,349)
United States sponsored mortgage-backed securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 49 | 75
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 25,096 | $ 92,929
Less than 12 months, unrealized loss | (482) | (2,291)
12 months or more, fair value | 47,684 | 44,444
12 months or more, unrealized loss | $ (8,778) | $ (11,291)
United States treasury securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 4 | 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 | 19,835 | 103,975
12 months or more, unrealized loss | $ (148) | $ (2,120)
Municipal securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 125 | 201
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 8,961 | $ 17,613
Less than 12 months, unrealized loss | (291) | (1,425)
12 months or more, fair value | 43,790 | 83,592
12 months or more, unrealized loss | $ (7,477) | $ (11,308)
Corporate debt securities |  |
Description and Number of Positions |  |
Number of investments in an unrealized loss position | loan | 4 | 6
Investments in an Unrealized Loss Position |  |
Less than 12 months, fair value | $ 10,026 | $ 990
Less than 12 months, unrealized loss | (37) | (10)
12 months or more, fair value | 1,986 | 2,818
12 months or more, unrealized loss | $ (14) | $ (82)

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