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Employee Benefit Plans (Components of Net Periodic Benefit Expense) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Retirement Benefits [Abstract]        
Service cost $ 447 $ 871 $ 895 $ 1,742
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 Labor and Related Expense
Interest cost on projected benefit obligation $ 855 $ 647 $ 1,710 $ 1,294
Expected return on plan assets (878) (1,141) (1,756) (2,282)
Amortization of unrecognized prior service credit (123) 0 (245) 0
Amortization of unrecognized net actuarial loss 316 64 632 128
Net periodic benefit expense $ 617 $ 441 $ 1,236 $ 882