Fair Value Measurements (Schedule Of Reconciliation Of Investment Securities Available For Sale Measured At Fair Value On A Recurring Basis Level 3 Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 2,385	$ 1,982
Impairment losses on investment securities	0	0
Included in other comprehensive income	1,840	61
Dispositions	(1,776)	0
Transfers into Level 3	0	0
Ending Balance	$ 2,449	$ 2,043