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Investment Securities - Securities Temporarily Impaired (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024
--- | --- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |  |
Fair Value (Estimated) (Less than 12 months) | $ 15,009 | $ 23,512 | $ 9,113
Unrealized Losses (Less than 12 months) | (283) | (292) | (46)
Fair Value (Estimated) (12 months or more) | 232,643 | 234,055 | 251,590
Unrealized Losses (12 months or more) | (49,100) | (53,876) | (54,270)
Fair Value (Estimated) | 247,652 | 257,567 | 260,703
Unrealized Losses | (49,383) | (54,168) | (54,316)
U.S. Treasury & Agency securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Fair Value (Estimated) (Less than 12 months) | 0 | 0 | 0
Unrealized Losses (Less than 12 months) | 0 | 0 | 0
Fair Value (Estimated) (12 months or more) | 18,950 | 19,796 | 19,693
Unrealized Losses (12 months or more) | (5,593) | (6,246) | (6,343)
Fair Value (Estimated) | 18,950 | 19,796 | 19,693
Unrealized Losses | (5,593) | (6,246) | (6,343)
Mortgage-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Fair Value (Estimated) (Less than 12 months) | 8,974 | 18,544 | 4,593
Unrealized Losses (Less than 12 months) | (105) | (222) | (16)
Fair Value (Estimated) (12 months or more) | 185,973 | 186,155 | 202,736
Unrealized Losses (12 months or more) | (36,311) | (40,804) | (41,619)
Fair Value (Estimated) | 194,947 | 204,699 | 207,329
Unrealized Losses | (36,416) | (41,026) | (41,635)
State and political subdivisions |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Fair Value (Estimated) (Less than 12 months) | 4,862 | 4,968 | 4,520
Unrealized Losses (Less than 12 months) | (172) | (70) | (30)
Fair Value (Estimated) (12 months or more) | 27,720 | 28,104 | 29,161
Unrealized Losses (12 months or more) | (7,196) | (6,826) | (6,308)
Fair Value (Estimated) | 32,582 | 33,072 | 33,681
Unrealized Losses | (7,368) | $ (6,896) | $ (6,338)
Asset-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Fair Value (Estimated) (Less than 12 months) | 1,173 |  |
Unrealized Losses (Less than 12 months) | (6) |  |
Fair Value (Estimated) (12 months or more) | 0 |  |
Unrealized Losses (12 months or more) | 0 |  |
Fair Value (Estimated) | 1,173 |  |
Unrealized Losses | $ (6) |  |

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