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Shareholders' Equity - AOCI Reclass to IS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Income Tax Benefit (Expense) | $ (47,857) | $ (55,914) | $ (64,830)
Net Income | 149,994 | 171,202 | 225,804
Other Noninterest Expense | 57,865 | 58,656 | 62,715
Reclassification out of Accumulated Other Comprehensive Income |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Net Income | (18,932) | (23,492) | (9,267)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Unrealized Gains(Losses) of Investment Securities Transferred from AFS to HTM |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Interest Income | (24,844) | (26,909) | (10,680)
Income Tax Benefit (Expense) | 6,586 | 7,133 | 2,831
Net Income | (18,258) | (19,776) | (7,849)
Reclassification out of Accumulated Other Comprehensive Income | Sales of Investment Securities Available-for-Sale |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Sales of Investment Securities Available-for-Sale |  | (4,582) |
Income Tax Benefit (Expense) |  | 1,237 |
Net Income |  | (3,345) |
Reclassification out of Accumulated Other Comprehensive Income | Prior Service Credit |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Other Noninterest Expense | 246 | 246 | 246
Reclassification out of Accumulated Other Comprehensive Income | Net Actuarial Losses |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Other Noninterest Expense | (1,163) | (751) | (2,175)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Defined Benefit Plans Items |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Income Tax Benefit (Expense) | 243 | 134 | 511
Net Income | (674) | (371) | (1,418)
Other Noninterest Expense | $ (917) | $ (505) | $ (1,929)

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