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Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2024
Stockholders' Equity Note [Abstract] |
Schedule of Change in the Components of the Accumulated Other Comprehensive Loss | The following table summarizes the change in the components of the Company's accumulated other comprehensive income (loss) for the years ended December 31, as indicated.
(dollars in thousands) | Unrealized Income (Loss) on Securities (1) |  | Unrecognized Net Pension and Postretirement Costs (2) |  | Accumulated Other Comprehensive Income (Loss)
Balance, December 31, 2022 | $ | (36,657) |  |  | $ | 4,943 |  |  | $ | (31,714) |
Other comprehensive income (loss), before reclassifications | 10,087 |  | (640) |  | 9,447
Amounts reclassified from accumulated other comprehensive income (loss) | 9,148 |  | 4,129 |  |  | 13,277 |
Other comprehensive income, before tax | 19,235 |  | 3,489 |  |  | 22,724
Income tax expense | (4,039) |  |  | (733) |  | (4,772) |
Other comprehensive income, net of tax | 15,196 |  | 2,756 |  |  | 17,952
Balance, December 31, 2023 | $ | (21,461) |  |  | $ | 7,699 |  |  | $ | (13,762) |
Other comprehensive income (loss), before reclassifications | (3,740) |  | (690) |  | (4,430)
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | 6,100 |  | 6,100
Other comprehensive income (loss), before tax | (3,740) |  | 5,410 |  | 1,670
Income tax (expense) benefit | 785 |  |  | (1,136) |  |  | (351) |
Other comprehensive income (loss), net of tax | (2,955) |  | 4,274 |  | 1,319
Balance, December 31, 2024 | $ | (24,416) |  | $ | 11,973 |  |  | $ | (12,443)
(1) | The pre-tax amounts reclassified from accumulated other comprehensive income (loss) are included in gains (losses) on sale of investment securities in the consolidated statements of income.
(2) | The pre-tax amounts reclassified from accumulated other comprehensive income (loss) are included in the computation of net periodic pension (income) cost. See Note 14.
Schedule of Stock by Class | The following table shows the changes in shares of common stock issues and common stock held as treasury shares for the years ended December 31, 2023, 2023, and 2022.
| Common Stock Issued | Treasury Stock Held | Common Stock Outstanding
Balance at, December 31, 2021 | $ | 7,023,821 |  | $ | (406,846) |  | $ | 6,616,975 |
Stock dividend | 260,330 | — | 260,330
Repurchase of common stock | — | (108,724) | (108,724)
Balance at, December 31, 2022 | $ | 7,284,151 |  | $ | (515,570) |  | $ | 6,768,581 |
Stock dividend | 270,742 | — | 270,742
Balance at, December 31, 2023 | $ | 7,554,893 |  | $ | (515,570) |  | $ | 7,039,323 |
Restricted share unit activity | — | 5,994 | 5,994
Repurchase of common stock | — | (56,692) | (56,692)
Balance at, December 31, 2024 | $ | 7,554,893 |  | $ | (566,268) |  | $ | 6,988,625 |

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