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v3.25.3

Accumulated Other Comprehensive Income - Change in AOCI Components Net of Tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Balance at Beginning of Period | $ 1,743,107 | $ 1,612,849 | $ 1,667,774 | $ 1,414,242
Other Comprehensive Income Before Reclassifications | 18,451 | 34,271 | 53,672 | 47,078
Amounts Reclassified from Accumulated Other Comprehensive Income | 4,492 | 4,730 | 13,466 | 14,250
Other Comprehensive Income | 22,943 | 39,001 | 67,138 | 61,328
Balance at End of Period | 1,791,183 | 1,665,474 | 1,791,183 | 1,665,474
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Balance at Beginning of Period | (299,194) | (374,361) | (343,389) | (396,688)
Other Comprehensive Income | 22,943 | 39,001 | 67,138 | 61,328
Balance at End of Period | (276,251) | (335,360) | (276,251) | (335,360)
Investment Securities-Available-for-Sale |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Balance at Beginning of Period | (154,009) | (211,600) | (189,230) | (224,407)
Other Comprehensive Income Before Reclassifications | 18,451 | 34,271 | 53,672 | 47,078
Amounts Reclassified from Accumulated Other Comprehensive Income | 0 | 0 | 0 | 0
Other Comprehensive Income | 18,451 | 34,271 | 53,672 | 47,078
Balance at End of Period | (135,558) | (177,329) | (135,558) | (177,329)
Investment Securities-Held-to-Maturity |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Balance at Beginning of Period | (122,254) | (139,838) | (130,763) | (149,021)
Other Comprehensive Income Before Reclassifications | 0 | 0 | 0 | 0
Amounts Reclassified from Accumulated Other Comprehensive Income | 4,260 | 4,562 | 12,769 | 13,745
Other Comprehensive Income | 4,260 | 4,562 | 12,769 | 13,745
Balance at End of Period | (117,994) | (135,276) | (117,994) | (135,276)
Defined Benefit Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Balance at Beginning of Period | (22,931) | (22,923) | (23,396) | (23,260)
Other Comprehensive Income Before Reclassifications | 0 | 0 | 0 | 0
Amounts Reclassified from Accumulated Other Comprehensive Income | 232 | 168 | 697 | 505
Other Comprehensive Income | 232 | 168 | 697 | 505
Balance at End of Period | $ (22,699) | $ (22,755) | $ (22,699) | $ (22,755)

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