Investment Securities - Schedule Of Amortized Cost And Fair Value By Contractual Maturity Of Available-For-Sale Securities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 253,579	$ 281,310
U.S. Treasury and government sponsored entities
Schedule of Available-for-sale Securities [Line Items]
1-5 years, Amortized Cost	199,754
Amortized Cost	199,754	226,624
1-5 years, Fair Value	200,255
Total securities available for sale, Fair Value	200,255
1-5 years, Weighted Average Yield	1.13%
Weighted Average Yield, Total	1.13%
U.S. Agency mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
1-5 years, Amortized Cost	50
5-10 years, Amortized Cost	289
Over 10 years, Amortized Cost	637
Amortized Cost	976	1,024
1-5 years, Fair Value	50
5-10 years, Fair Value	289
Over 10 years, Fair Value	640
Total securities available for sale, Fair Value	979
1-5 years, Weighted Average Yield	2.29%
5-10 years, Weighted Average Yield	3.26%
Over 10 years, Weighted Average Yield	2.91%
Weighted Average Yield, Total	2.98%
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Within 1 year, Amorized Cost	736
1-5 years, Amortized Cost	36,159
5-10 years, Amortized Cost	2,000
Amortized Cost	38,895	38,820
Within 1 year, Fair Value	738
1-5 years, Fair Value	36,552
5-10 years, Fair Value	2,017
Total securities available for sale, Fair Value	39,307
Within 1 year, Weighted Average Yield	0.91%
1-5 years, Weighted Average Yield	1.45%
5-10 years, Weighted Average Yield	1.07%
Weighted Average Yield, Total	1.42%
Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Over 10 years, Amortized Cost	1,992
Amortized Cost	1,992	2,999
Over 10 years, Fair Value	2,018
Total securities available for sale, Fair Value	$ 2,018
Over 10 years, Weighted Average Yield	4.71%
Weighted Average Yield, Total	4.71%