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Investment Securities (Investments with Unrealized Losses) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
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Information concerning investments with unrealized losses |  |
Investment securities available for sale, Less than 12 months, Fair Value | $ 13,187 | $ 9,031
Investment securities available for sale, Less than 12 months, Unrealized Losses | (78) | (118)
Investment securities available for sale, 12 months or longer, Fair Value | 980 | 349
Investment securities available for sale, 12 months or longer, Unrealized Losses | 20 | 2
Investment securities available for sale, Total, Fair Value | 14,167 | 9,380
Investment securities available for sale, Gross Unrealized Losses | (98) | (120)
Investment securities held to maturity, Less than 12 months, Fair Value | 4,776 | 965
Investment securities held to maturity, Less than 12 months, Unrealized Losses | (32) | (35)
Investment securities held to maturity, 12 months or longer, Fair Value | 1,999 | 1,981
Investment securities held to maturity, 12 months or longer, Unrealized Losses | (1) | (20)
Investment securities held to maturity, Total Fair Value | 6,775 | 2,946
Investment securities held to maturity, Total Unrealized Losses | (33) | (55)
U.S. Agency [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities available for sale, Less than 12 months, Fair Value | 992 | 993
Investment securities available for sale, Less than 12 months, Unrealized Losses | (8) | (7)
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 | 992 | 993
Investment securities available for sale, Gross Unrealized Losses | (8) | (7)
U.S. Agency mortgage-backed securities [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities available for sale, Less than 12 months, Fair Value | 7,254 | 1,140
Investment securities available for sale, Less than 12 months, Unrealized Losses | (18) | (8)
Investment securities available for sale, 12 months or longer, Fair Value |  | 349
Investment securities available for sale, 12 months or longer, Unrealized Losses |  | 2
Investment securities available for sale, Total, Fair Value | 7,254 | 1,489
Investment securities available for sale, Gross Unrealized Losses | (18) | (10)
Investment securities held to maturity, Less than 12 months, Fair Value | 2,789 |
Investment securities held to maturity, Less than 12 months, Unrealized Losses | (24) |
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 | 2,789 |
Investment securities held to maturity, Total Unrealized Losses | (24) |
Corporate bonds [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities available for sale, Less than 12 months, Fair Value | 4,941 | 6,898
Investment securities available for sale, Less than 12 months, Unrealized Losses | (52) | (103)
Investment securities available for sale, 12 months or longer, Fair Value | 980 |
Investment securities available for sale, 12 months or longer, Unrealized Losses | 20 |
Investment securities available for sale, Total, Fair Value | 5,921 | 6,898
Investment securities available for sale, Gross Unrealized Losses | (72) | (103)
Corporate bonds and other securities [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities held to maturity, Less than 12 months, Fair Value | 1,987 | 965
Investment securities held to maturity, Less than 12 months, Unrealized Losses | (8) | (35)
Investment securities held to maturity, 12 months or longer, Fair Value | 1,999 | 1,981
Investment securities held to maturity, 12 months or longer, Unrealized Losses | (1) | (20)
Investment securities held to maturity, Total Fair Value | 3,986 | 2,946
Investment securities held to maturity, Total Unrealized Losses | $ (9) | $ (55)

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