Investment Securities (Schedule Of Amortized Cost And Fair Value By Contractual Maturity Of Available-For-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	$ 169,913	$ 221,604	$ 210,668
U.S Treasury And Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Within 1 year, Amortized Cost	9,998
1-5 years, Amortized Cost	89,507
Total securities available for sale, Amortized Cost	99,505	160,529	153,017
Within 1 year, Fair Value	10,007
1-5 years, Fair Value	89,965
Total securities available for sale, Fair Value	99,972
Within 1 year, Weighted Average Yield	0.63%
1-5 years, Weighted Average Yield	0.69%
Weighted Average Yield, Total	0.69%
U.S Agency Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
5-10 years, Amortized Cost	41
Total securities available for sale, Amortized Cost	41	52	56
5-10 years, Fair Value	43
Total securities available for sale, Fair Value	43
5-10 years, Weighted Average Yield	4.45%
Weighted Average Yield, Total	4.45%
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Within 1 year, Amortized Cost	3,163
1-5 years, Amortized Cost	45,481
Total securities available for sale, Amortized Cost	48,644	43,767	43,593
Within 1 year, Fair Value	3,181
1-5 years, Fair Value	46,498
Total securities available for sale, Fair Value	49,679
Within 1 year, Weighted Average Yield	2.89%
1-5 years, Weighted Average Yield	2.49%
Weighted Average Yield, Total	2.52%
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Over 10 years, Amortized Cost	3,524
Total securities available for sale, Amortized Cost	3,524	996
Over 10 years, Fair Value	3,759
Total securities available for sale, Fair Value	$ 3,759
Over 10 years, Weighted Average Yield	5.57%
Weighted Average Yield, Total	5.57%