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Employee Benefit Plans (Changes In Fair Value Of Plan Assets) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
Fair value of plan assets at beginning of period $ 75,188
Fair value of plan assets at end of period 87,827
Level 3 Inputs [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Fair value of plan assets at beginning of period 2,897
Realized gain 881
Sales (2,873)
Unrealized gain $ (905)