Investment Securities (Schedule of Unrealized Losses Not Recognized in Income) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	$ 32,231
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(126)
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	28,842
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(2,782)
Investment Securities Available-for-Sale: Total, fair value	61,073
Investment Securities Available-for-Sale: Total, unrealized losses	(2,908)
Investment Securities Held-to-Maturity: Less than 12 months, fair value	989	18,187
Investment Securities Held-to-Maturity: 12 months or less, unrealized losses	9	103
Investment Securities Held-to-Maturity: Total, fair value	989	18,187
Investment Securities Held-to-Maturity: Total, unrealized losses		(103)
Temporarily Impaired Securities, Total Fair Value	62,062	143,892
Temporarily Impaired Securities, Total Unrealized Losses	2,917	10,249
Temporarily Impaired Securities, Less than 12 Months, Fair Value	33,220	122,295
Temporarily Impaired Securities, Less than 12 Months, Aggregate Losses	135	4,817
Temporarily Impaired Securities, 12 months or longer, Fair Value	28,842	21,597
Temporarily Impaired Securities, 12 months or longer, Aggregate losses	2,782	5,432
U.S. treasury notes [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	10,098
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(50)
Investment Securities Available-for-Sale: Total, fair value	10,098
Investment Securities Available-for-Sale: Total, unrealized losses	(50)
Federal agency obligations [Member]
Schedule of Investments [Line Items]
Investment Securities Held-to-Maturity: Less than 12 months, fair value	624	11,980
Investment Securities Held-to-Maturity: 12 months or less, unrealized losses	(4)	34
Investment Securities Held-to-Maturity: Total, fair value	624	11,980
Investment Securities Held-to-Maturity: Total, unrealized losses	4	(34)
Commercial mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Investment Securities Held-to-Maturity: Less than 12 months, fair value	989
Investment Securities Held-to-Maturity: 12 months or less, unrealized losses	9
Investment Securities Held-to-Maturity: Total, fair value	989
Residential mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value		2,013
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses		(6)
Investment Securities Available-for-Sale: Total, fair value		2,013
Investment Securities Available-for-Sale: Total, unrealized losses		(6)
Obligations of U.S. states and political subdivisions [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	2,100	4,352
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(7)	(36)
Investment Securities Available-for-Sale: Total, fair value	2,100	4,352
Investment Securities Available-for-Sale: Total, unrealized losses	(7)	(36)
Trust preferred securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	4,243	4,325
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(21)	(996)
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	1,265	10,947
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(1,471)	(3,398)
Investment Securities Available-for-Sale: Total, fair value	5,508	15,272
Investment Securities Available-for-Sale: Total, unrealized losses	(1,492)	(4,394)
Corporate bonds and notes [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	14,775	89,534
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(38)	(3,663)
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	24,306	7,509
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(374)	(414)
Investment Securities Available-for-Sale: Total, fair value	39,081	97,043
Investment Securities Available-for-Sale: Total, unrealized losses	(412)	(4,077)
Collateralized mortgage obligations [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	1,937	1,899
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(736)	(1,327)
Investment Securities Available-for-Sale: Total, fair value	1,937	1,899
Investment Securities Available-for-Sale: Total, unrealized losses	(736)	(1,327)
Investment Securities Held-to-Maturity: Less than 12 months, fair value		6,207
Investment Securities Held-to-Maturity: 12 months or less, unrealized losses		69
Investment Securities Held-to-Maturity: Total, fair value		6,207
Investment Securities Held-to-Maturity: Total, unrealized losses		(69)
Asset-backed securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value		3,884
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses		(13)
Investment Securities Available-for-Sale: Total, fair value		3,884
Investment Securities Available-for-Sale: Total, unrealized losses		(13)
Certificates of Deposit [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	391
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(6)
Investment Securities Available-for-Sale: Total, fair value	391
Investment Securities Available-for-Sale: Total, unrealized losses	(6)
Equity securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	349	262
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(186)	(273)
Investment Securities Available-for-Sale: Total, fair value	349	262
Investment Securities Available-for-Sale: Total, unrealized losses	(186)	(273)
Other securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	985	980
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(15)	(20)
Investment Securities Available-for-Sale: Total, fair value	985	980
Investment Securities Available-for-Sale: Total, unrealized losses	$ (15)	$ (20)

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