| Benefit Plans - (Details) - USD ($) $ in Thousands | 3 Months Ended | |
|---|---|---|
| Mar. 31, 2024 | Mar. 31, 2023 | |
| Defined Benefit Pension Plans | ||
| Defined Benefit Plan, Net Periodic Expense (Benefit) | ||
| Interest cost | $ 808 | $ 871 | 
| Expected return on plan assets | (827) | (837) | 
| Net periodic (benefit) expense | (19) | 34 | 
| Other Postretirement Benefits Plan | ||
| Defined Benefit Plan, Net Periodic Expense (Benefit) | ||
| Interest cost | 6 | 6 | 
| Amortization of prior service credit | (7) | (31) | 
| Amortization of net gain | (1) | (1) | 
| Net periodic (benefit) expense | $ (2) | $ (26) | 
| X | ||||||||||
| 
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
 | 
| X | ||||||||||
| 
- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
 | 
| X | ||||||||||
| 
- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
 | 
| X | ||||||||||
| 
- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
 | 
| X | ||||||||||
| 
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
 | 
| X | ||||||||||
| 
- References No definition available. 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Details 
 |