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OCI Net of Tax | 9 Months Ended
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Sep. 30, 2024
Statement of Comprehensive Income [Abstract] |
Comprehensive Income (Loss) [Table Text Block] | Other comprehensive income (loss) components, net of tax, are shown in the following table for the three-month and the nine-month periods ended September 30, 2024 and 2023:
(in thousands) |  | Changes in pension plan assets and benefit obligations |  | Unrealized (losses) gains on debt securities AFS |  | Total
Beginning balance at July 1, 2024 |  | $ | 1,692 |  |  | $ | (70,146) |  |  | $ | (68,454) |
| Other comprehensive income before reclassifications |  | 17,687 |  |  | 20,623 |  |  | 38,310 |
| Amounts reclassified from accumulated other comprehensive loss |  | (4,540) |  |  | — |  |  | (4,540) |
Net current period other comprehensive income |  | 13,147 |  |  | 20,623 |  |  | 33,770 |
Ending balance at September 30, 2024 |  | $ | 14,839 |  |  | $ | (49,523) |  |  | $ | (34,684) |
Beginning balance at July 1, 2023 |  | $ | (6,680) |  |  | $ | (90,106) |  |  | $ | (96,786) |
| Other comprehensive loss before reclassifications |  | — |  |  | (19,104) |  |  | (19,104) |
Net current period other comprehensive loss |  | — |  |  | (19,104) |  |  | (19,104) |
Ending balance at September 30, 2023 |  | $ | (6,680) |  |  | $ | (109,210) |  |  | $ | (115,890) |
(in thousands) |  | Changes in pension plan assets and benefit obligations |  | Unrealized (losses) gains on debt securities AFS |  | Total
Beginning balance at January 1, 2024 |  | $ | 1,692 |  |  | $ | (67,883) |  |  | $ | (66,191) |
| Other comprehensive income before reclassifications |  | 17,687 |  |  | 18,046 |  |  | 35,733 |
| Amounts reclassified from accumulated other comprehensive loss |  | (4,540) |  |  | 314 |  | (4,226) |
Net current period other comprehensive income |  | 13,147 |  |  | 18,360 |  |  | 31,507 |
Ending balance at September 30, 2024 |  | $ | 14,839 |  |  | $ | (49,523) |  |  | $ | (34,684) |
Beginning balance at January 1, 2023 |  | $ | (6,680) |  |  | $ | (95,714) |  |  | $ | (102,394) |
| Other comprehensive loss before reclassifications |  | — |  |  | (13,496) |  |  | (13,496) |
Net current period other comprehensive loss |  | — |  |  | (13,496) |  |  | (13,496) |
Ending balance at September 30, 2023 |  | $ | (6,680) |  |  | $ | (109,210) |  |  | $ | (115,890) |
Reclassification out of Accumulated Other Comprehensive Income | The following table provides information concerning amounts reclassified out of accumulated other comprehensive loss for the three-month and the nine-month periods ended September 30, 2024 and 2023:
|  |  | Three Months Ended September 30, |  | Nine Months Ended September 30, |  |
(In thousands) |  | 2024 |  | 2023 |  | 2024 |  | 2023 |  | Affected Line Item in the Consolidated Condensed Statements of Income
Change in funded status of defined benefit pension items |  |  |  |  |  |  |  |
| Amortization of prior service costs |  | $ | 37 |  |  | $ | — |  |  | $ | 37 |  |  | $ | — |  |  | Other components of net periodic pension benefit income
| Gain recognition on partial settlement of vested benefits |  | (5,783) |  |  | — |  |  | (5,783) |  |  | — |  |  | Pension settlement gain
Income before income taxes |  | (5,746) |  |  | — |  |  | (5,746) |  |  | — |  |  | Income before income taxes
| Income tax effect |  | (1,206) |  |  | — |  |  | (1,206) |  |  | — |  |  | Income taxes
| Net of income tax |  | $ | (4,540) |  |  | $ | — |  |  | $ | (4,540) |  |  | $ | — |  |  | Net income
Unrealized losses on AFS debt securities |  |  |  |  |  |  |  |
| Net loss on the sale of debt securities |  | $ | — |  |  | $ | — |  |  | $ | 398 |  |  | $ | — |  |  | Loss on the sale of debt securities, net
Loss before income taxes |  | — |  |  | — |  |  | 398 |  |  | — |  |  | Income before income taxes
| Income tax effect |  | — |  |  | — |  |  | 84 |  |  | — |  |  | Income taxes
| Net of income tax |  | $ | — |  |  | $ | — |  |  | $ | 314 |  |  | $ | — |  |  | Net income

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 1 -Section 45 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1 + Details
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- References No definition available. + Details
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