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Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Accumulated Other Comprehensive Loss |  |
Net unrealized loss on investment securities available for sale | $ (48,959) | $ (51,527)
Income tax benefit | (10,681) | (11,270)
Net of income taxes | (38,278) | (40,257)
Benefit plan adjustments | (2,852) | (4,370)
Income tax benefit | (622) | (956)
Net of income taxes | (2,230) | (3,414)
Derivative adjustments | (239) | (871)
Income tax benefit | (52) | (191)
Net of income taxes | (187) | (680)
Accumulated other comprehensive loss | $ (40,695) | $ (44,351)

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