Investment Securities (Investment Securities With Unrealized Losses By Aggregated Major Security Type And Length Of Time In A Continuous Unrealized Loss Position) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-Sale, Less than 12 Months, Fair Value	$ 148,714	$ 97,801
Available-for-Sale, Less than 12 Months, Unrealized Losses	(3,783)	(734)
Available-for-Sale, 12 months or longer, Fair Value	31,632	74,096
Available-for-Sale, 12 months or longer, Unrealized Losses	(18,899)	(24,858)
Available-for-Sale, Fair Value	180,346	171,897
Available-for-Sale, Unrealized Losses	(22,682)	(25,592)
Held-to-Maturity, Less than 12 Months, Fair Value	1,638	1,635
Held-to-Maturity, Less than 12 Months, Unrealized Losses	(1)	(3)
Held-to-Maturity, 12 months or longer, Fair Value	51	13,180
Held-to-Maturity, 12 months or longer, Unrealized Losses	0	(175)
Held-to-maturity, Fair Value	1,689	14,815
Held-to-Maturity, Unrealized Losses	(1)	(178)
U.S. Government-Sponsored Entities And Agencies [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-Sale, Less than 12 Months, Fair Value	36,457	24,935
Available-for-Sale, Less than 12 Months, Unrealized Losses	(55)	(65)
Available-for-Sale, 12 months or longer, Fair Value	0	0
Available-for-Sale, 12 months or longer, Unrealized Losses	0	0
Available-for-Sale, Fair Value	36,457	24,935
Available-for-Sale, Unrealized Losses	(55)	(65)
Mortgage-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-Sale, Less than 12 Months, Fair Value	25,009	49,016
Available-for-Sale, Less than 12 Months, Unrealized Losses	(163)	(61)
Available-for-Sale, 12 months or longer, Fair Value	0	3
Available-for-Sale, 12 months or longer, Unrealized Losses	0	0
Available-for-Sale, Fair Value	25,009	49,019
Available-for-Sale, Unrealized Losses	(163)	(61)
Mortgage-Backed Securities - Non-Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-Sale, Less than 12 Months, Fair Value	35,467	10,053
Available-for-Sale, Less than 12 Months, Unrealized Losses	(2,996)	(353)
Available-for-Sale, 12 months or longer, Fair Value	16,580	59,203
Available-for-Sale, 12 months or longer, Unrealized Losses	(576)	(4,520)
Available-for-Sale, Fair Value	52,047	69,256
Available-for-Sale, Unrealized Losses	(3,572)	(4,873)
States And Political Subdivisions [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-Sale, Less than 12 Months, Fair Value	44,944	9,281
Available-for-Sale, Less than 12 Months, Unrealized Losses	(528)	(114)
Available-for-Sale, 12 months or longer, Fair Value	0	1,345
Available-for-Sale, 12 months or longer, Unrealized Losses	0	(79)
Available-for-Sale, Fair Value	44,944	10,626
Available-for-Sale, Unrealized Losses	(528)	(193)
Held-to-Maturity, Less than 12 Months, Fair Value	1,638	1,613
Held-to-Maturity, Less than 12 Months, Unrealized Losses	(1)	(1)
Held-to-Maturity, 12 months or longer, Fair Value	51	13,180
Held-to-Maturity, 12 months or longer, Unrealized Losses	0	(175)
Held-to-maturity, Fair Value	1,689	14,793
Held-to-Maturity, Unrealized Losses	(1)	(176)
Pooled Trust Preferred Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-Sale, Less than 12 Months, Fair Value	0	0
Available-for-Sale, Less than 12 Months, Unrealized Losses	0	0
Available-for-Sale, 12 months or longer, Fair Value	8,460	7,327
Available-for-Sale, 12 months or longer, Unrealized Losses	(16,834)	(18,134)
Available-for-Sale, Fair Value	8,460	7,327
Available-for-Sale, Unrealized Losses	(16,834)	(18,134)
Other Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-Sale, Less than 12 Months, Fair Value	6,837	4,516
Available-for-Sale, Less than 12 Months, Unrealized Losses	(41)	(141)
Available-for-Sale, 12 months or longer, Fair Value	6,592	6,218
Available-for-Sale, 12 months or longer, Unrealized Losses	(1,489)	(2,125)
Available-for-Sale, Fair Value	13,429	10,734
Available-for-Sale, Unrealized Losses	(1,530)	(2,266)
Held-to-Maturity, Less than 12 Months, Fair Value		22
Held-to-Maturity, Less than 12 Months, Unrealized Losses		(2)
Held-to-Maturity, 12 months or longer, Fair Value		0
Held-to-Maturity, 12 months or longer, Unrealized Losses		0
Held-to-maturity, Fair Value		22
Held-to-Maturity, Unrealized Losses		$ (2)