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Investment Securities (Schedule of Unrealized Losses Not Recognized in Income) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	$ 33,440	$ 54,492
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(554)	(323)
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	13,052	10,752
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(1,426)	(1,618)
Investment Securities Available-for-Sale: Total, fair value	46,492	65,244
Investment Securities Available-for-Sale: Total, unrealized losses	(1,980)	(1,941)
Investment Securities Held-to-Maturity: Less than 12 months, fair value	18,109	932
Investment Securities Held-to-Maturity: 12 months or less, unrealized losses	(269)	(5)
Investment Securities Held-to-Maturity: 12 months or longer, fair value	592
Investment Securities Held-to-Maturity: 12 months or longer, unrealized losses	(6)
Investment Securities Held-to-Maturity: Total, fair value	18,701	932
Investment Securities Held-to-Maturity: Total, unrealized losses	(275)	(5)
Temporarily Impaired Securities, Total Fair Value	65,193	66,176
Temporarily Impaired Securities, Total Unrealized Losses	2,255	1,946
Temporarily Impaired Securities, Less than 12 Months, Fair Value	51,549	55,424
Investment Securities Held-to-Maturity: Total, unrealized losses	823	328
Temporarily Impaired Securities, 12 months or longer, Fair Value	13,644	10,752
Temporarily Impaired Securities, 12 months or longer, Aggregate losses	(1,432)	1,618
U.S. treasury notes [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value		4,460
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses		(23)
Investment Securities Available-for-Sale: Total, fair value		4,460
Investment Securities Available-for-Sale: Total, unrealized losses		(23)
Federal agency obligations [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	6,151	877
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(121)	(5)
Investment Securities Available-for-Sale: Total, fair value	6,151	877
Investment Securities Available-for-Sale: Total, unrealized losses	(121)	(5)
Commercial mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Investment Securities Held-to-Maturity: Less than 12 months, fair value		932
Investment Securities Held-to-Maturity: 12 months or less, unrealized losses		(5)
Investment Securities Held-to-Maturity: 12 months or longer, fair value	592
Investment Securities Held-to-Maturity: 12 months or longer, unrealized losses	(6)
Investment Securities Held-to-Maturity: Total, fair value	592	932
Investment Securities Held-to-Maturity: Total, unrealized losses	(6)	(5)
Residential mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value		1,669
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses		(1)
Investment Securities Available-for-Sale: Total, fair value		1,669
Investment Securities Available-for-Sale: Total, unrealized losses		(1)
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	15,522	18,360
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(291)	(132)
Investment Securities Available-for-Sale: Total, fair value	15,522	18,360
Investment Securities Available-for-Sale: Total, unrealized losses	(291)	(132)
Investment Securities Held-to-Maturity: Less than 12 months, fair value	18,109
Investment Securities Held-to-Maturity: 12 months or less, unrealized losses	(269)
Investment Securities Held-to-Maturity: Total, fair value	18,109
Investment Securities Held-to-Maturity: Total, unrealized losses	(269)
Trust preferred securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value		10,494
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses		(18)
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	1,289	1,246
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(1,128)	(1,156)
Investment Securities Available-for-Sale: Total, fair value	1,289	11,740
Investment Securities Available-for-Sale: Total, unrealized losses	(1,128)	(1,174)
Corporate bonds and notes [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	11,577	18,244
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(139)	(134)
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	10,408	8,196
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(118)	(237)
Investment Securities Available-for-Sale: Total, fair value	21,985	26,440
Investment Securities Available-for-Sale: Total, unrealized losses	(257)	(371)
Certificates of Deposit [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: Less than 12 months, fair value	190	388
Investment Securities Available-for-Sale: Less than 12 months, unrealized losses	(3)	(10)
Investment Securities Available-for-Sale: Total, fair value	190	388
Investment Securities Available-for-Sale: Total, unrealized losses	(3)	(10)
Equity securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	370	325
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(165)	(210)
Investment Securities Available-for-Sale: Total, fair value	370	325
Investment Securities Available-for-Sale: Total, unrealized losses	(165)	(210)
Other securities [Member]
Schedule of Investments [Line Items]
Investment Securities Available-for-Sale: 12 Months or Longer, fair value	985	985
Investment Securities Available-for-Sale: 12 months or longer, unrealized losses	(15)	(15)
Investment Securities Available-for-Sale: Total, fair value	985	985
Investment Securities Available-for-Sale: Total, unrealized losses	$ (15)	$ (15)

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