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	Mar. 31, 2013
Municipal Securities [Member]
Schedule Of Debt Securities [Line Items]
Within 1 year, Amortized Cost	$ 2,605
1-5 years, Amortized Cost	12,784
5-10 years, Amortized Cost	8,984
Total debt securities, Amortized Cost	24,373
Within 1 year, Fair Value	2,621
1-5 years, Fair Value	13,022
5-10 years, Fair Value	9,475
Total debt securities, Fair Value	$ 25,118
Within 1 year, Weighted Average Yield	1.86%
1-5 years, Weighted Average Yield	1.70%
5-10 years, Weighted Average Yield	4.71%
Weighted Average Yield, Total	2.82%