Investment Securities - Schedule Of Amortized Cost And Fair Value By Contractual Maturity Of Debt Securities (Details) (Municipal securities, USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Municipal securities
Schedule Of Debt Securities [Line Items]
Within 1 year, Amortized Cost	$ 2,091
1-5 years, Amortized Cost	7,142
5-10 years, Amortized Cost	4,928
Total debt securities, Amortized Cost	14,161
Within 1 year, Fair Value	2,096
1-5 years, Fair Value	7,321
5-10 years, Fair Value	5,092
Total debt securities, Fair Value	$ 14,509
Within 1 year, Weighted Average Yield	0.64%
1-5 years, Weighted Average Yield	2.67%
5-10 years, Weighted Average Yield	4.54%
Weighted Average Yield, Total	3.02%