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Employee Benefit Plans (Components Of Net Periodic Benefit Expense) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Employee Benefit Plans [Abstract]        
Service cost $ 581 $ 480 $ 1,162 $ 959
Interest cost on projected benefit obligation 583 573 1,166 1,147
Expected return on plan assets (1,205) (1,030) (2,410) (2,059)
Amortization of prior service credit (12) (12) (24) (24)
Amortization of net actuarial losses 235 44 471 88
Net periodic pension expense $ 182 $ 55 $ 365 $ 111