Employee Benefit Plans (Components Of The Net Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Service cost-benefits earned during the year	$ 500	$ 503	$ 430
Interest cost on projected benefit obligation	3,944	4,762	5,069
Expected return on plan assets	(5,751)	(6,092)	(6,285)
Amortization of Prior Service Cost (Credit)	(271)	(271)	0
Amortization of unrecognized net loss	2,565	2,593	1,654
Recognized Net Loss Due to Settlements	0	0	1,687
Net periodic pension cost	$ 987	$ 1,495	$ 2,555