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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	12 Months Ended
	Dec. 31, 2012
Securities [Abstract]
Balance, January 1, 2012	$ (6,355)
Additions for the credit component on debt securities in which other-than-temporary impairment was not previously recognized	(451)
Securities sold during the period	3,903
Balance, December 31, 2012	$ (2,903)

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

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