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Securities (Details Textual) (USD $) In Millions, unless otherwise specified | 9 Months Ended
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Sep. 30, 2012 Contract
Securities (Textual) [Abstract] |
Number of U.S. agency and mortgage-backed securities | 13
Number of obligation of state and political subdivisions in an unrealized loss position | 10
Percentage of investment portfolio | 100.00%
Weighted-average period of re-pricing of portfolio | 3 years 9 months 18 days
Investment in Federal Home Loan Bank stock | $ 1.1

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