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Employee Benefit Plans (Projected Benefit Obligations In Excess Of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Qualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation $ 390,437 $ 388,213
Fair value of plan assets 377,303 354,464
Non-Qualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation 12,190 16,258
Fair value of plan assets