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Employee Benefit Plans (Reconciliation Of The Plan's Benefit Obligations, Fair Value Of Assets And The Funded Status) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Change in projected benefit obligation:      
Projected benefit obligation at beginning of period $ 97,560 $ 84,328  
Service cost 4,196 3,693 $ 3,207
Interest cost 2,202 2,537 2,777
Actuarial (gain) loss (1,945) 11,154  
Benefits paid and plan expenses (4,331) (4,152)  
Projected benefit obligation at end of period 97,682 97,560 84,328
Change in plan assets:      
Fair value of plan assets at beginning of period 102,176 87,827  
Actual return on plan assets 6,382 18,501  
Benefits paid and plan expenses (4,331) (4,152)  
Fair value of plan assets at end of period 104,227 102,176 $ 87,827
Funded status at end of period $ 6,545 $ 4,616