Investment Securities - Schedule Of Amortized Cost And Fair Value By Contractual Maturity Of Debt Securities (Details) (Municipal securities, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Municipal securities
Schedule Of Debt Securities [Line Items]
Within 1 year, Amortized Cost	$ 3,556
1-5 years, Amortized Cost	5,533
5-10 years, Amortized Cost	4,955
Total debt securities, Amortized Cost	14,044
Within 1 year, Fair Value	3,559
1-5 years, Fair Value	5,720
5-10 years, Fair Value	5,153
Total debt securities, Fair Value	$ 14,432
Within 1 year, Weighted Average Yield	0.82%
1-5 years, Weighted Average Yield	3.24%
5-10 years, Weighted Average Yield	4.54%
Weighted Average Yield, Total	3.08%