Employee Retirement Benefits (Summary Of Components Of Net Periodic (Benefit) Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Retirement Benefits [Abstract]
Service cost	$ 50	$ 8	$ 5
Interest cost	122	143	186
Expected return on assets	(162)	(188)	(229)
Plan settlement costs	1,720
Amortization of prior service cost			211
Net periodic pension cost (benefit)	$ 1,730	$ (37)	$ 173