Investment Securities (Schedule Of Amortized Cost And Fair Value By Contractual Maturity Of Debt Securities) (Details) (Municipal Securities [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Municipal Securities [Member]
Schedule Of Debt Securities [Line Items]
Within 1 year, Amortized Cost	$ 2,368
1-5 years, Amortized Cost	12,436
5-10 years, Amortized Cost	9,069
Total debt securities, Amortized Cost	23,873
Within 1 year, Fair Value	2,389
1-5 years, Fair Value	12,683
5-10 years, Fair Value	9,634
Total debt securities, Fair Value	$ 24,706
Within 1 year, Weighted Average Yield	1.79%
1-5 years, Weighted Average Yield	1.77%
5-10 years, Weighted Average Yield	4.71%
Over 10 years, Weighted Average Yield	0.00%
Weighted Average Yield, Total	2.89%