Loans (Loans Modified As TDRs By Class Of Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 5,348,000	$ 5,655,000
Nonperforming Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	370	422
Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	208	249
Single-Family Residential[Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 162	$ 173