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Investment Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Information concerning investments with unrealized losses
Investment securities available for sale, Less than 12 months, Fair Value	$ 17,258	$ 3,774
Investment securities available for sale, Less than 12 months, Unrealized Losses	(69)	(35)
Investment securities available for sale, 12 months or longer, Fair Value	469
Investment securities available for sale, 12 months or longer, Unrealized Losses	5
Investment securities available for sale, Total, Fair Value	17,727	3,774
Investment securities available for sale, Gross Unrealized Losses	(74)	(35)
Investment securities held to maturity, Less than 12 months, Fair Value	2,924	1,991
Investment securities held to maturity, Less than 12 months, Unrealized Losses	(76)	(9)
Investment securities held to maturity, 12 months or longer, Fair Value
Investment securities held to maturity, 12 months or longer, Unrealized Losses
Investment securities held to maturity, Total Fair Value	2,924	1,991
Investment securities held to maturity, Total Unrealized Losses	(76)	(9)
U.S. Agency [Member]
Information concerning investments with unrealized losses
Investment securities available for sale, Less than 12 months, Fair Value	1,248	3,161
Investment securities available for sale, Less than 12 months, Unrealized Losses	(1)	(28)
Investment securities available for sale, 12 months or longer, Fair Value
Investment securities available for sale, 12 months or longer, Unrealized Losses
Investment securities available for sale, Total, Fair Value	1,248	3,161
Investment securities available for sale, Gross Unrealized Losses	(1)	(28)
U.S. Agency mortgage-backed securities [Member]
Information concerning investments with unrealized losses
Investment securities available for sale, Less than 12 months, Fair Value	10,066	613
Investment securities available for sale, Less than 12 months, Unrealized Losses	(21)	(7)
Investment securities available for sale, 12 months or longer, Fair Value	469
Investment securities available for sale, 12 months or longer, Unrealized Losses	5
Investment securities available for sale, Total, Fair Value	10,535	613
Investment securities available for sale, Gross Unrealized Losses	(26)	(7)
Corporate bonds [Member]
Information concerning investments with unrealized losses
Investment securities available for sale, Less than 12 months, Fair Value	5,944
Investment securities available for sale, Less than 12 months, Unrealized Losses	(47)
Investment securities available for sale, 12 months or longer, Fair Value
Investment securities available for sale, 12 months or longer, Unrealized Losses
Investment securities available for sale, Total, Fair Value	5,944
Investment securities available for sale, Gross Unrealized Losses	(47)
Other Securities [Member]
Information concerning investments with unrealized losses
Investment securities held to maturity, Less than 12 months, Fair Value	2,924	1,991
Investment securities held to maturity, Less than 12 months, Unrealized Losses	(76)	(9)
Investment securities held to maturity, 12 months or longer, Fair Value
Investment securities held to maturity, 12 months or longer, Unrealized Losses
Investment securities held to maturity, Total Fair Value	2,924	1,991
Investment securities held to maturity, Total Unrealized Losses	$ (76)	$ (9)

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