Investment Securities (Schedule Of Amortized Cost And Fair Value By Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	$ 187,574	$ 221,604	$ 180,890
U.S Treasury And Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Within 1 year, Amortized Cost	29,996
1-5 years, Amortized Cost	89,006
Total securities available for sale, Amortized Cost	119,002	160,529	137,256
Within 1 year, Fair Value	30,034
1-5 years, Fair Value	89,469
Total securities available for sale, Fair Value	119,503
Within 1 year, Weighted Average Yield	0.76%
1-5 years, Weighted Average Yield	0.73%
Weighted Average Yield, Total	0.74%
U.S Agency Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
5-10 years, Amortized Cost	47
Total securities available for sale, Amortized Cost	47	52	58
5-10 years, Fair Value	50
Total securities available for sale, Fair Value	50
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	3,160
1-5 years, Amortized Cost	43,358
Total securities available for sale, Amortized Cost	46,518	43,767	29,553
Within 1 year, Fair Value	3,195
1-5 years, Fair Value	43,652
Total securities available for sale, Fair Value	46,847
Within 1 year, Weighted Average Yield	2.88%
1-5 years, Weighted Average Yield	2.45%
Weighted Average Yield, Total	2.48%
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	18,970	16,260	14,023
Within 1 year, Weighted Average Yield	1.79%
1-5 years, Weighted Average Yield	2.01%
5-10 years, Weighted Average Yield	4.58%
Over 10 years, Weighted Average Yield	4.79%
Weighted Average Yield, Total	3.18%
Debt securities maturities within one year amortized cost	2,414
Debt securities maturities after one through five years amortized cost	9,897
Debt securities maturities after five through ten years amortized cost	7,305
Debt securities maturities after ten years amortized cost	2,955
Debt securities maturities within one year fair value	2,422
Debt securities maturities after one through five years fair value	10,137
Debt securities maturities after five through ten years fair value	7,776
Debt securities maturities after ten years fair value	3,176
Debt securities amortized cost	22,571
Debt securities fair value	23,511
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Over 10 years, Amortized Cost	3,037
Total securities available for sale, Amortized Cost	3,037	996
Over 10 years, Fair Value	3,179
Total securities available for sale, Fair Value	$ 3,179
Over 10 years, Weighted Average Yield	5.88%
Weighted Average Yield, Total	5.88%