Employee Benefit Plans (Components Of The Net Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan [Abstract]
Service cost-benefits earned during the year	$ 651	$ 621	$ 500
Interest cost on projected benefit obligation	3,756	3,826	3,944
Expected return on plan assets	(5,255)	(5,785)	(5,751)
Amortization of prior service cost	(271)	(271)	(271)
Amortization of unrecognized net loss	2,267	2,313	2,565
Net periodic pension cost	$ 1,148	$ 704	$ 987