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Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2023
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of components of other comprehensive income (loss) | Accumulated Other Comprehensive Income (Loss) Other comprehensive income (loss) components, net of income tax, are shown in the following table for the years ended December 31, 2023, 2022 and 2021.
(in thousands) |  | Changes in Pension Plan assets and benefit obligations |  | Unrealized (losses) gains on AFS debt securities |  | Unrealized net holding loss on cash flow hedge |  | Total
Beginning balance at January 1, 2023 |  | $ | (6,680) |  |  | $ | (95,714) |  |  | $ | — |  |  | $ | (102,394) |
| Other comprehensive income before reclassifications |  | 8,334 |  |  | 21,610 |  |  | — |  |  | 29,944 |
| Amounts reclassified from accumulated other comprehensive income |  | 38 |  |  | 6,221 |  |  | — |  |  | 6,259 |
Net current period other comprehensive income |  | $ | 8,372 |  |  | $ | 27,831 |  |  | $ | — |  |  | $ | 36,203 |
Ending balance at December 31, 2023 |  | $ | 1,692 |  |  | $ | (67,883) |  |  | $ | — |  |  | $ | (66,191) |
Beginning balance at January 1, 2022 |  | $ | (5,792) |  |  | $ | 21,153 |  |  | $ | (206) |  |  | $ | 15,155 |
| Other comprehensive (loss) income before reclassifications |  | (876) |  |  | (116,867) |  |  | 154 |  |  | (117,589) |
| Amounts reclassified from accumulated other comprehensive loss |  | (12) |  |  | — |  |  | 52 |  |  | 40 |
Net current period other comprehensive (loss) income |  | $ | (888) |  |  | $ | (116,867) |  |  | $ | 206 |  |  | $ | (117,549) |
Ending balance at December 31, 2022 |  | $ | (6,680) |  |  | $ | (95,714) |  |  | $ | — |  |  | $ | (102,394) |
Beginning balance at January 1, 2021 |  | $ | (34,421) |  |  | $ | 40,690 |  |  | $ | (698) |  |  | $ | 5,571 |
| Other comprehensive income (loss) before reclassifications |  | 26,875 |  |  | (19,537) |  |  | 492 |  |  | 7,830 |
| Amounts reclassified from accumulated other comprehensive income |  | 1,754 |  |  | — |  |  | — |  |  | 1,754 |
Net current period other comprehensive income (loss) |  | $ | 28,629 |  |  | $ | (19,537) |  |  | $ | 492 |  |  | $ | 9,584 |
Ending balance at December 31, 2021 |  | $ | (5,792) |  |  | $ | 21,153 |  |  | $ | (206) |  |  | $ | 15,155 |
The following table provides information concerning amounts reclassified out of accumulated other comprehensive (loss) income for the years ended December 31, 2023, 2022 and 2021:
|  | Amount Reclassified from Accumulated Other Comprehensive (Loss) Income |  | Affected Line Item in the Consolidated Statements of Income
(In thousands) |  | 2023 | 2022 | 2021 |  |
Amortization of defined benefit pension items |  |  |  |
| Amortization of prior service cost (credit) |  | $ | 48 |  | $ | (15) |  | $ | (15) |  |  | Employee benefits
| Amortization of net actuarial loss |  | — |  | — |  | 2,235 |  |  | Employee benefits
Income (loss) before income taxes |  | 48 |  | (15) |  | 2,220 |  |  | Income before income taxes
| Income tax effect |  | 10 |  | (3) |  | 466 |  |  | Income taxes
| Net of income tax |  | $ | 38 |  | $ | (12) |  | $ | 1,754 |  |  | Net income
Unrealized losses on AFS debt securities |  |  |  |
| Net loss on the sale of debt securities |  | $ | 7,875 |  | $ | — |  | $ | — |  |  | Loss on the sale of debt securities, net
Loss before income taxes |  | 7,875 |  | — |  | — |  |  | Income before income taxes
| Income tax effect |  | 1,654 |  | — |  | — |  |  | Income taxes
| Net of income tax |  | $ | 6,221 |  | $ | — |  | $ | — |  |  | Net income
Unrealized net holding loss on cash flow hedge |  |  |  |
| Loss due to early termination of borrowing interest rate swap |  | $ | — |  | $ | 66 |  | $ | — |  |  | Miscellaneous expense
Loss before income taxes |  | — |  | 66 |  | — |  |  | Income before income taxes
| Income tax effect |  | — |  | 14 |  | — |  |  | Income taxes
| Net of income tax |  | $ | — |  | $ | 52 |  | $ | — |  |  | Net income

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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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