Financial Derivatives (Schedule Of Effect Of Derivative Instruments On The Statement Of Income) (Details) - Interest Rate Contract [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI net of tax on (Effective Portion)		$ 244	$ 358
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (160)	$ (382)	$ (525)