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Employee Benefit Plans - Pension and other postretirement benefit plans, Narrative (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Jan. 01, 2011
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Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Plan participant age | 65 years |
Nonqualified Plan | Underfunded plan | Postretirement Health Coverage |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Plan participant age |  | 55 years
Years of continuous service |  | 10 years
Plan participant age, all other employees |  | 60 years
Qualified plan | Minimum | Defined Benefit Plan, Equity Securities |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Targeted allocation percentages | 30.00% |
Qualified plan | Minimum | Fixed Income Securities |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Targeted allocation percentages | 60.00% |
Qualified plan | Maximum | Defined Benefit Plan, Equity Securities |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Targeted allocation percentages | 40.00% |
Qualified plan | Maximum | Fixed Income Securities |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Targeted allocation percentages | 70.00% |
Qualified plan | Underfunded plan | Pension Benefits |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Expected employer contributions in next fiscal year | $ 0 |
Qualified plan | Underfunded plan | Other Postretirement Benefits |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Expected employer contributions in next fiscal year | $ 795 |
Qualified plan | Unfunded plan | Pension Benefits |  |
Defined benefit plan disclosure, net periodic benefit cost [Line Items] |  |
Excess percentage of unrecognized pension actuarial gains and losses | 10.00% |
Market-related value of assets, average of assets (in years) | 5 years |

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