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Employee Benefit Plans (Changes In Fair Value Of Plan Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets at beginning of period $ 83,348 $ 75,252
Fair value of plan assets at end of period 75,188 83,348
Level 3 Inputs [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets at beginning of period 2,641 2,637
Realized gain   43
Purchases   103
Sales   (224)
Unrealized gain 256 82
Fair value of plan assets at end of period $ 2,897 $ 2,641