Employee Benefit Plans (Schedule Of Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Net loss (gain)	$ 1,276	$ 11,118	$ (10,200)
Amortization of net loss	(1,423)	(385)	(1,279)
Total recognized in other comprehensive (income) loss	(147)	10,733	(11,479)
Total recognized in net periodic benefit costs and other comprehensive loss (income)	1,262	$ 10,967	$ (9,824)
Defined benefit plan, estimated amortization of net loss in next fiscal year	$ 1,500