Investment Securities (Gross Realized Gains And Losses On Sales Of Available-For-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investment Holdings [Line Items]
Gains	$ 2,905	$ 210	$ 4,977
Losses	1	1	954
U.S. Treasury And Agencies [Member]
Investment Holdings [Line Items]
Gains	0	0	371
Losses	0	0	0
Obligations Of States And Political Subdivisions [Member]
Investment Holdings [Line Items]
Gains	3	10	10
Losses	1	1	1
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member]
Investment Holdings [Line Items]
Gains	2,902	0	4,578
Losses	0	0	953
Other Debt Securities [Member]
Investment Holdings [Line Items]
Gains	0	200	18
Losses	$ 0	$ 0	$ 0