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Employee Benefit Plans (Components Of Net Periodic Benefit Expense) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Retirement Benefits [Abstract]      
Service cost $ 1,788 $ 3,485 $ 4,196
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Labor and Related Expense Labor and Related Expense Labor and Related Expense
Interest cost on projected benefit obligation $ 3,421 $ 2,588 $ 2,202
Expected return on plan assets (3,511) (4,565) (5,225)
Amortization of unrecognized loss 1,264 250 724
Amortization of unrecognized prior service credit (492) 0 0
Net periodic pension cost $ 2,470 $ 1,758 $ 1,897