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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, 2022
Dec. 31, 2021
Dec. 31, 2020
Change in projected benefit obligation:      
Projected benefit obligation at beginning of period $ 97,682 $ 97,560  
Service cost 3,485 4,196 $ 3,693
Interest cost 2,588 2,202 2,537
Actuarial gain (25,055) (1,945)  
Benefits paid and plan expenses (4,528) (4,331)  
Projected benefit obligation at end of period 74,172 97,682 97,560
Change in plan assets:      
Fair value of plan assets at beginning of period 104,227 102,176  
Actual return on plan assets (26,422) 6,382  
Benefits paid and plan expenses (4,529) (4,331)  
Fair value of plan assets at end of period 73,276 104,227 $ 102,176
Funded status at end of period $ (896) $ 6,545