Employee Benefit Plans (Schedule Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 309	$ 321	$ 618	$ 643
Interest cost	499	476	997	952
Expected return on plan assets	(729)	(797)	(1,458)	(1,569)
Recognized loss	376	360	753	720
Total	$ 455	$ 360	$ 910	$ 746