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Other Comprehensive Income (Loss) (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] |  |  |  |  |  |  |  |
Balance | $ 396,694 | $ 397,026 | $ 404,415 | $ 366,991 | $ 374,642 | $ 292,295 | $ 404,415 | $ 292,295
Other comprehensive income (loss), net of tax | 40,282 | (6,279) | (12,400) | (58,685) | (16,834) | 33,796 | 21,603 | (41,723)
Balance | 439,678 | 396,694 | 397,026 | 315,982 | 366,991 | 374,642 | 439,678 | 315,982
Net unrealized holding gains (losses) on available for sale securities |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |
Balance | (191,448) | (185,002) | (171,539) | (193,527) | (176,693) | (210,489) | (171,539) | (210,489)
Other comprehensive income (loss) before reclassification | 41,452 | (6,545) | (15,149) | (59,786) | (16,834) | 33,891 |  |
Amounts reclassified from accumulated other comprehensive income (loss) | 333 | 99 | 1,686 | 488 | 0 | (95) |  |
Other comprehensive income (loss), net of tax | 41,785 | (6,446) | (13,463) | (59,298) | (16,834) | 33,796 |  |
Balance | (149,663) | (191,448) | (185,002) | (252,825) | (193,527) | (176,693) | (149,663) | (252,825)
Reclassification adjustment for (gains) losses realized in income on fair value hedge |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |
Balance | 217 | 50 | (1,013) | 0 | 0 | 0 | (1,013) | 0
Other comprehensive income (loss) before reclassification | 0 | 0 | 0 | 0 | 0 | 0 |  |
Amounts reclassified from accumulated other comprehensive income (loss) | (1,503) | 167 | 1,063 | 613 | 0 | 0 |  |
Other comprehensive income (loss), net of tax | (1,503) | 167 | 1,063 | 613 | 0 | 0 |  |
Balance | (1,286) | 217 | 50 | 613 | 0 | 0 | (1,286) | 613
Change in funded status of post-retirement plan |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |
Balance | (2) | (2) | (2) | (1) | (1) | (1) | (2) | (1)
Other comprehensive income (loss) before reclassification | 0 | 0 | 0 | 0 | 0 | 0 |  |
Amounts reclassified from accumulated other comprehensive income (loss) | 0 | 0 | 0 | 0 | 0 | 0 |  |
Other comprehensive income (loss), net of tax | 0 | 0 | 0 | 0 | 0 | 0 |  |
Balance | (2) | (2) | (2) | (1) | (1) | (1) | (2) | (1)
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |
Balance | (191,233) | (184,954) | (172,554) | (193,528) | (176,694) | (210,490) | (172,554) | (210,490)
Other comprehensive income (loss) before reclassification | 41,452 | (6,545) | (15,149) | (59,786) | (16,834) | 33,891 |  |
Amounts reclassified from accumulated other comprehensive income (loss) | (1,170) | 266 | 2,749 | 1,101 | 0 | (95) |  |
Other comprehensive income (loss), net of tax | 40,282 | (6,279) | (12,400) | (58,685) | (16,834) | 33,796 |  |
Balance | $ (150,951) | $ (191,233) | $ (184,954) | $ (252,213) | $ (193,528) | $ (176,694) | $ (150,951) | $ (252,213)

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