Investment Securities (Summary Of Held-To-Maturity Securities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	$ 2,747	$ 2,749
Held-to-maturity, Gross Unrecognized Gains	220	229
Held-to-maturity Securities, Fair Value	2,967	2,978
Municipal Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	2,747	2,749
Held-to-maturity, Gross Unrecognized Gains	220	229
Held-to-maturity Securities, Fair Value	$ 2,967	$ 2,978