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Change in Accumulated Other Comprehensive Income - (Loss) Changes To Accumulated Other Comprehensive Income By Components (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |  |  |
Beginning balance | $ (18,763) |  | $ (18,006) | $ (19,416) |  | $ (20,446) | $ (18,006) | $ (20,446)
Other comprehensive (loss) before reclassifications | 5,485 |  |  | (5,237) |  |  | 4,527 | (3,935)
Tax effect of current period changes | (1,152) |  |  | 1,100 |  |  | (951) | 828
Current period changes net of taxes | 4,333 | $ 1,054 | (1,811) | (4,137) | $ (1,945) | 2,975 | 3,576 | (3,107)
Ending balance | (14,430) | (18,763) |  | (23,553) | (19,416) |  | (14,430) | (23,553)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |  |  |
Beginning balance | (18,773) |  | (18,020) | (19,430) |  | (20,465) | (18,020) | (20,465)
Other comprehensive (loss) before reclassifications | 5,485 |  |  | (5,237) |  |  | 4,532 | (3,927)
Tax effect of current period changes | (1,152) |  |  | 1,100 |  |  | (952) | 825
Current period changes net of taxes | 4,333 |  |  | (4,137) |  |  | 3,580 | (3,102)
Ending balance | (14,440) | (18,773) |  | (23,567) | (19,430) |  | (14,440) | (23,567)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |  |  |
Beginning balance | 10 |  | $ 14 | 14 |  | $ 19 | 14 | 19
Other comprehensive (loss) before reclassifications | 0 |  |  | 0 |  |  | (5) | (8)
Tax effect of current period changes | 0 |  |  | 0 |  |  | 1 | 3
Current period changes net of taxes | 0 |  |  | 0 |  |  | (4) | (5)
Ending balance | $ 10 | $ 10 |  | $ 14 | $ 14 |  | $ 10 | $ 14

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