Fair Value Of Assets And Liabilities (Summary Of Differences Between The Fair Value Carrying Amount Of Mortgages Held-For-Sale And Aggregate Unpaid Principal Amount) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value Carrying Amount
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	$ 22,220	$ 24,269
Nonaccrual loans	6,419	6,775
Loans 90 days or more past due and still accruing	35	211
Aggregate Unpaid Principal
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	31,580	35,262
Nonaccrual loans	11,736	12,910
Loans 90 days or more past due and still accruing	43	331
Fair Value Carrying Amount Less Aggregate Unpaid Principal
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	(9,360)	(10,993)
Nonaccrual loans	(5,317)	(6,135)
Loans 90 days or more past due and still accruing	$ (8)	$ (120)