Loans And Allowance For Credit Losses (Summary Of Net Financial Impact On Interest Income Due To Interest Rate Modifications Below Market For Accruing TDR Loans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	$ (30,457)	[1]	$ (26,556)	[1]
Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(4,673)		(1,899)
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(10,250)		(7,733)
Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(121)		(86)
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(15,534)		(16,924)
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(1)		(287)
Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(4,672)		(1,612)
Construction And Land Development [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(1,342)		(1,069)
Term [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(8,908)		(6,664)
1-4 Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	(14,980)		(16,164)
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income	$ (433)		$ (674)

[1] Calculated based on the difference between the modified rate and the premodified rate applied to the recorded investment.