Securities (Summary Of Activity Related To The Credit Component Recognized On Debt Securities Available For Sale Of Other-Than-Temporary Impairment Recognized In Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Securities [Abstract]
Beginning Balance	$ (6,584)	$ (6,355)
Additions for the credit component on debt securities in which other-than-temporary impairment was not previously recognized	(106)	(335)
Securities sold during the period	790	790
Ending Balance	$ (5,900)	$ (5,900)