Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Significant Accounting Policies [Line Items]
Days past due when loans are generally placed on nonaccrual status, in days	90 days
Days past due when loans are generally charged-off in full, in days	120 days
General period after loans become current, accrual status returned, in months	6 months
Other real estate owned	$ 163	$ 194
Number of consecutive years used for compensation calculation	5 years
FHLB stock	$ 15,100	15,100
FRB stock	4,900	3,900
Equity method investments, asset amount	$ 5,000	$ 4,900
Minimum [Member]
Significant Accounting Policies [Line Items]
Standby letters of credit outstanding original term, in years	1 year
Loss rate look-back period	24 months
Loss emergence period	12 months
Minimum [Member] | Building And Building Improvements [Member]
Significant Accounting Policies [Line Items]
Premise and equipment, estimated useful lives, in years	15 years
Minimum [Member] | Software Furniture And Equipment [Member]
Significant Accounting Policies [Line Items]
Premise and equipment, estimated useful lives, in years	3 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Standby letters of credit outstanding original term, in years	5 years
Loss rate look-back period	48 months
Loss emergence period	24 months
Maximum [Member] | Building And Building Improvements [Member]
Significant Accounting Policies [Line Items]
Premise and equipment, estimated useful lives, in years	39 years
Maximum [Member] | Software Furniture And Equipment [Member]
Significant Accounting Policies [Line Items]
Premise and equipment, estimated useful lives, in years	10 years
Other Intangible Assets [Member]
Significant Accounting Policies [Line Items]
Estimated average life	20 years
Core Deposits [Member]
Significant Accounting Policies [Line Items]
Estimated average life	9 years 6 months