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v3.25.4

Shareholders' Equity and Compensation Plans - Changes in OCI (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | $ 1,824,002 | $ 1,716,068 | $ 1,522,263
Net change | 62,131 | (15,703) | 29,317
Ending balance | 2,039,386 | 1,824,002 | 1,716,068
Accumulated Other Comprehensive Income (Loss) |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | (116,718) | (101,015) | (130,332)
Ending balance | (54,587) | (116,718) | (101,015)
Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | (122,132) | (112,844) | (144,549)
Net change | 60,126 | (9,288) | 31,705
Ending balance | (62,006) | (122,132) | (112,844)
Unamortized Gain (Loss) on Held-to-Maturity Securities |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | 8,088 | 10,580 | 13,185
Net change | (2,447) | (2,492) | (2,605)
Ending balance | 5,641 | 8,088 | 10,580
Net Unrealized Gain (Loss) on Cash Flow Hedges |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | (2,674) | 1,249 | 1,032
Net change | 4,452 | (3,923) | 217
Ending balance | $ 1,778 | $ (2,674) | $ 1,249

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