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Investment Securities (Information Concerning Investments with Unrealized Losses) (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 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 | $ 45,794 | $ 9,031
Investment securities available for sale, Less than 12 months, Unrealized Losses | (1,234) | (118)
Investment securities available for sale, 12 months or longer, Fair Value | 3,650 | 349
Investment securities available for sale, 12 months or longer, Unrealized Losses | (64) | (2)
Investment securities available for sale, Total, Fair Value | 49,444 | 9,380
Investment securities available for sale, Gross Unrealized Losses | (1,298) | (120)
Investment securities held to maturity, Less than 12 months, Fair Value | 11,327 | 965
Investment securities held to maturity, Less than 12 months, Unrealized Losses | (461) | (35)
Investment securities held to maturity, 12 months or longer, Fair Value | 994 | 1,981
Investment securities held to maturity, 12 months or longer, Unrealized Losses | (6) | (20)
Investment securities held to maturity, Total Fair Value | 12,321 | 2,946
Investment securities held to maturity, Total Unrealized Losses | (467) | (55)
U.S. Agency [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities available for sale, Less than 12 months, Fair Value | 5,948 | 993
Investment securities available for sale, Less than 12 months, Unrealized Losses | (151) | (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 | 5,948 | 993
Investment securities available for sale, Gross Unrealized Losses | (151) | (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 | 33,058 | 1,140
Investment securities available for sale, Less than 12 months, Unrealized Losses | (880) | (8)
Investment securities available for sale, 12 months or longer, Fair Value | 702 | 349
Investment securities available for sale, 12 months or longer, Unrealized Losses | (12) | (2)
Investment securities available for sale, Total, Fair Value | 33,760 | 1,489
Investment securities available for sale, Gross Unrealized Losses | (892) | (10)
Investment securities held to maturity, Less than 12 months, Fair Value | 7,443 |
Investment securities held to maturity, Less than 12 months, Unrealized Losses | (338) |
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 | 7,443 |
Investment securities held to maturity, Total Unrealized Losses | (338) |
Corporate bonds [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities available for sale, Less than 12 months, Fair Value | 6,788 | 6,898
Investment securities available for sale, Less than 12 months, Unrealized Losses | (203) | (103)
Investment securities available for sale, 12 months or longer, Fair Value | 2,948 |
Investment securities available for sale, 12 months or longer, Unrealized Losses | (52) |
Investment securities available for sale, Total, Fair Value | 9,736 | 6,898
Investment securities available for sale, Gross Unrealized Losses | (255) | (103)
Taxable Municipal [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities held to maturity, Less than 12 months, Fair Value | 934 |
Investment securities held to maturity, Less than 12 months, Unrealized Losses | (78) |
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 | 934 |
Investment securities held to maturity, Total Unrealized Losses | (78) |
Corporate bonds and other securities [Member] |  |
Information concerning investments with unrealized losses |  |
Investment securities held to maturity, Less than 12 months, Fair Value | 2,950 | 965
Investment securities held to maturity, Less than 12 months, Unrealized Losses | (45) | (35)
Investment securities held to maturity, 12 months or longer, Fair Value | 994 | 1,981
Investment securities held to maturity, 12 months or longer, Unrealized Losses | (6) | (20)
Investment securities held to maturity, Total Fair Value | 3,944 | 2,946
Investment securities held to maturity, Total Unrealized Losses | $ (51) | $ (55)

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- Definition Amount of accumulated pre-tax unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer recognized in Accumulated Other Comprehensive Income (AOCI). + References No definition available. + Details
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